MagickCore 7.1.2
Convert, Edit, Or Compose Bitmap Images
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draw.c
1/*
2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3% %
4% %
5% %
6% DDDD RRRR AAA W W %
7% D D R R A A W W %
8% D D RRRR AAAAA W W W %
9% D D R RN A A WW WW %
10% DDDD R R A A W W %
11% %
12% %
13% MagickCore Image Drawing Methods %
14% %
15% %
16% Software Design %
17% Cristy %
18% July 1998 %
19% %
20% %
21% Copyright @ 1999 ImageMagick Studio LLC, a non-profit organization %
22% dedicated to making software imaging solutions freely available. %
23% %
24% You may not use this file except in compliance with the License. You may %
25% obtain a copy of the License at %
26% %
27% https://imagemagick.org/script/license.php %
28% %
29% Unless required by applicable law or agreed to in writing, software %
30% distributed under the License is distributed on an "AS IS" BASIS, %
31% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
32% See the License for the specific language governing permissions and %
33% limitations under the License. %
34% %
35%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
36%
37% Bill Radcliffe of Corbis (www.corbis.com) contributed the polygon
38% rendering code based on Paul Heckbert's "Concave Polygon Scan Conversion",
39% Graphics Gems, 1990. Leonard Rosenthal and David Harr of Appligent
40% (www.appligent.com) contributed the dash pattern, linecap stroking
41% algorithm, and minor rendering improvements.
42%
43*/
44␌
45/*
46 Include declarations.
47*/
48#include "MagickCore/studio.h"
49#include "MagickCore/annotate.h"
50#include "MagickCore/artifact.h"
51#include "MagickCore/blob.h"
52#include "MagickCore/cache.h"
53#include "MagickCore/cache-private.h"
54#include "MagickCore/cache-view.h"
55#include "MagickCore/channel.h"
56#include "MagickCore/color.h"
57#include "MagickCore/colorspace-private.h"
58#include "MagickCore/composite.h"
59#include "MagickCore/composite-private.h"
60#include "MagickCore/constitute.h"
61#include "MagickCore/draw.h"
62#include "MagickCore/draw-private.h"
63#include "MagickCore/enhance.h"
64#include "MagickCore/exception.h"
65#include "MagickCore/exception-private.h"
66#include "MagickCore/gem.h"
67#include "MagickCore/geometry.h"
68#include "MagickCore/image-private.h"
69#include "MagickCore/list.h"
70#include "MagickCore/log.h"
71#include "MagickCore/magick.h"
72#include "MagickCore/memory-private.h"
73#include "MagickCore/monitor.h"
74#include "MagickCore/monitor-private.h"
75#include "MagickCore/option.h"
76#include "MagickCore/paint.h"
77#include "MagickCore/pixel-accessor.h"
78#include "MagickCore/property.h"
79#include "MagickCore/resample.h"
80#include "MagickCore/resample-private.h"
81#include "MagickCore/resource_.h"
82#include "MagickCore/splay-tree.h"
83#include "MagickCore/string_.h"
84#include "MagickCore/string-private.h"
85#include "MagickCore/thread-private.h"
86#include "MagickCore/token.h"
87#include "MagickCore/transform-private.h"
88#include "MagickCore/utility.h"
89␌
90/*
91 Define declarations.
92*/
93#define AntialiasThreshold (1.0/3.0)
94#define BezierQuantum 200
95#define PrimitiveExtentPad 4296.0
96#define MaxBezierCoordinates 67108864
97#define ThrowPointExpectedException(token,exception) \
98{ \
99 (void) ThrowMagickException(exception,GetMagickModule(),DrawError, \
100 "NonconformingDrawingPrimitiveDefinition","`%s'",token); \
101 status=MagickFalse; \
102 break; \
103}
104␌
105/*
106 Typedef declarations.
107*/
108typedef struct _EdgeInfo
109{
110 SegmentInfo
111 bounds;
112
113 double
114 scanline;
115
116 PointInfo
117 *points;
118
119 size_t
120 number_points;
121
122 ssize_t
123 direction;
124
125 MagickBooleanType
126 ghostline;
127
128 size_t
129 highwater;
130} EdgeInfo;
131
132typedef struct _ElementInfo
133{
134 double
135 cx,
136 cy,
137 major,
138 minor,
139 angle;
140} ElementInfo;
141
142typedef struct _MVGInfo
143{
144 PrimitiveInfo
145 **primitive_info;
146
147 size_t
148 *extent;
149
150 ssize_t
151 offset;
152
153 PointInfo
154 point;
155
156 ExceptionInfo
157 *exception;
158} MVGInfo;
159
160typedef struct _PolygonInfo
161{
162 EdgeInfo
163 *edges;
164
165 size_t
166 number_edges;
167} PolygonInfo;
168
169typedef enum
170{
171 MoveToCode,
172 OpenCode,
173 GhostlineCode,
174 LineToCode,
175 EndCode
176} PathInfoCode;
177
178typedef struct _PathInfo
179{
180 PointInfo
181 point;
182
183 PathInfoCode
184 code;
185} PathInfo;
186␌
187/*
188 Forward declarations.
189*/
190static Image
191 *DrawClippingMask(Image *,const DrawInfo *,const char *,const char *,
192 ExceptionInfo *);
193
194static MagickBooleanType
195 DrawStrokePolygon(Image *,const DrawInfo *,const PrimitiveInfo *,
196 ExceptionInfo *),
197 RenderMVGContent(Image *,const DrawInfo *,const size_t,ExceptionInfo *),
198 TraceArc(MVGInfo *,const PointInfo,const PointInfo,const PointInfo),
199 TraceArcPath(MVGInfo *,const PointInfo,const PointInfo,const PointInfo,
200 const double,const MagickBooleanType,const MagickBooleanType),
201 TraceBezier(MVGInfo *,const size_t),
202 TraceCircle(MVGInfo *,const PointInfo,const PointInfo),
203 TraceEllipse(MVGInfo *,const PointInfo,const PointInfo,const PointInfo),
204 TraceLine(PrimitiveInfo *,const PointInfo,const PointInfo),
205 TraceRectangle(PrimitiveInfo *,const PointInfo,const PointInfo),
206 TraceRoundRectangle(MVGInfo *,const PointInfo,const PointInfo,PointInfo),
207 TraceSquareLinecap(PrimitiveInfo *,const size_t,const double);
208
209static PrimitiveInfo
210 *TraceStrokePolygon(const DrawInfo *,const PrimitiveInfo *,ExceptionInfo *);
211
212static ssize_t
213 TracePath(MVGInfo *,const char *,ExceptionInfo *);
214␌
215/*
216%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
217% %
218% %
219% %
220% A c q u i r e D r a w I n f o %
221% %
222% %
223% %
224%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
225%
226% AcquireDrawInfo() returns a DrawInfo structure properly initialized.
227%
228% The format of the AcquireDrawInfo method is:
229%
230% DrawInfo *AcquireDrawInfo(void)
231%
232*/
233MagickExport DrawInfo *AcquireDrawInfo(void)
234{
235 DrawInfo
236 *draw_info;
237
238 draw_info=(DrawInfo *) AcquireCriticalMemory(sizeof(*draw_info));
239 GetDrawInfo((ImageInfo *) NULL,draw_info);
240 return(draw_info);
241}
242␌
243/*
244%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
245% %
246% %
247% %
248% C l o n e D r a w I n f o %
249% %
250% %
251% %
252%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
253%
254% CloneDrawInfo() makes a copy of the given draw_info structure. If NULL
255% is specified, a new DrawInfo structure is created initialized to default
256% values.
257%
258% The format of the CloneDrawInfo method is:
259%
260% DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
261% const DrawInfo *draw_info)
262%
263% A description of each parameter follows:
264%
265% o image_info: the image info.
266%
267% o draw_info: the draw info.
268%
269*/
270MagickExport DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
271 const DrawInfo *draw_info)
272{
273 DrawInfo
274 *clone_info;
275
276 ExceptionInfo
277 *exception;
278
279 clone_info=(DrawInfo *) AcquireCriticalMemory(sizeof(*clone_info));
280 GetDrawInfo(image_info,clone_info);
281 if (draw_info == (DrawInfo *) NULL)
282 return(clone_info);
283 exception=AcquireExceptionInfo();
284 if (draw_info->id != (char *) NULL)
285 (void) CloneString(&clone_info->id,draw_info->id);
286 if (draw_info->primitive != (char *) NULL)
287 (void) CloneString(&clone_info->primitive,draw_info->primitive);
288 if (draw_info->geometry != (char *) NULL)
289 (void) CloneString(&clone_info->geometry,draw_info->geometry);
290 clone_info->compliance=draw_info->compliance;
291 clone_info->viewbox=draw_info->viewbox;
292 clone_info->affine=draw_info->affine;
293 clone_info->gravity=draw_info->gravity;
294 clone_info->fill=draw_info->fill;
295 clone_info->stroke=draw_info->stroke;
296 clone_info->stroke_width=draw_info->stroke_width;
297 if (draw_info->fill_pattern != (Image *) NULL)
298 clone_info->fill_pattern=CloneImage(draw_info->fill_pattern,0,0,MagickTrue,
299 exception);
300 if (draw_info->stroke_pattern != (Image *) NULL)
301 clone_info->stroke_pattern=CloneImage(draw_info->stroke_pattern,0,0,
302 MagickTrue,exception);
303 clone_info->stroke_antialias=draw_info->stroke_antialias;
304 clone_info->text_antialias=draw_info->text_antialias;
305 clone_info->fill_rule=draw_info->fill_rule;
306 clone_info->linecap=draw_info->linecap;
307 clone_info->linejoin=draw_info->linejoin;
308 clone_info->miterlimit=draw_info->miterlimit;
309 clone_info->dash_offset=draw_info->dash_offset;
310 clone_info->decorate=draw_info->decorate;
311 clone_info->compose=draw_info->compose;
312 if (draw_info->text != (char *) NULL)
313 (void) CloneString(&clone_info->text,draw_info->text);
314 if (draw_info->font != (char *) NULL)
315 (void) CloneString(&clone_info->font,draw_info->font);
316 if (draw_info->metrics != (char *) NULL)
317 (void) CloneString(&clone_info->metrics,draw_info->metrics);
318 if (draw_info->family != (char *) NULL)
319 (void) CloneString(&clone_info->family,draw_info->family);
320 clone_info->style=draw_info->style;
321 clone_info->stretch=draw_info->stretch;
322 clone_info->weight=draw_info->weight;
323 if (draw_info->encoding != (char *) NULL)
324 (void) CloneString(&clone_info->encoding,draw_info->encoding);
325 clone_info->pointsize=draw_info->pointsize;
326 clone_info->kerning=draw_info->kerning;
327 clone_info->interline_spacing=draw_info->interline_spacing;
328 clone_info->interword_spacing=draw_info->interword_spacing;
329 clone_info->direction=draw_info->direction;
330 clone_info->word_break=draw_info->word_break;
331 if (draw_info->density != (char *) NULL)
332 (void) CloneString(&clone_info->density,draw_info->density);
333 clone_info->align=draw_info->align;
334 clone_info->undercolor=draw_info->undercolor;
335 clone_info->border_color=draw_info->border_color;
336 if (draw_info->server_name != (char *) NULL)
337 (void) CloneString(&clone_info->server_name,draw_info->server_name);
338 if (draw_info->dash_pattern != (double *) NULL)
339 {
340 ssize_t
341 x;
342
343 for (x=0; fabs(draw_info->dash_pattern[x]) >= MagickEpsilon; x++) ;
344 clone_info->dash_pattern=(double *) AcquireQuantumMemory((size_t) (x+1),
345 sizeof(*clone_info->dash_pattern));
346 if (clone_info->dash_pattern == (double *) NULL)
347 ThrowFatalException(ResourceLimitFatalError,
348 "UnableToAllocateDashPattern");
349 (void) memset(clone_info->dash_pattern,0,(size_t) (x+1)*
350 sizeof(*clone_info->dash_pattern));
351 (void) memcpy(clone_info->dash_pattern,draw_info->dash_pattern,(size_t)
352 x*sizeof(*clone_info->dash_pattern));
353 }
354 clone_info->gradient=draw_info->gradient;
355 if (draw_info->gradient.stops != (StopInfo *) NULL)
356 {
357 size_t
358 number_stops;
359
360 number_stops=clone_info->gradient.number_stops;
361 clone_info->gradient.stops=(StopInfo *) AcquireQuantumMemory((size_t)
362 number_stops,sizeof(*clone_info->gradient.stops));
363 if (clone_info->gradient.stops == (StopInfo *) NULL)
364 ThrowFatalException(ResourceLimitFatalError,
365 "UnableToAllocateDashPattern");
366 (void) memcpy(clone_info->gradient.stops,draw_info->gradient.stops,
367 (size_t) number_stops*sizeof(*clone_info->gradient.stops));
368 }
369 clone_info->bounds=draw_info->bounds;
370 clone_info->fill_alpha=draw_info->fill_alpha;
371 clone_info->stroke_alpha=draw_info->stroke_alpha;
372 clone_info->element_reference=draw_info->element_reference;
373 clone_info->clip_path=draw_info->clip_path;
374 clone_info->clip_units=draw_info->clip_units;
375 if (draw_info->clip_mask != (char *) NULL)
376 (void) CloneString(&clone_info->clip_mask,draw_info->clip_mask);
377 if (draw_info->clipping_mask != (Image *) NULL)
378 clone_info->clipping_mask=CloneImage(draw_info->clipping_mask,0,0,
379 MagickTrue,exception);
380 if (draw_info->composite_mask != (Image *) NULL)
381 clone_info->composite_mask=CloneImage(draw_info->composite_mask,0,0,
382 MagickTrue,exception);
383 clone_info->render=draw_info->render;
384 clone_info->debug=draw_info->debug;
385 exception=DestroyExceptionInfo(exception);
386 return(clone_info);
387}
388␌
389/*
390%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
391% %
392% %
393% %
394+ C o n v e r t P a t h T o P o l y g o n %
395% %
396% %
397% %
398%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
399%
400% ConvertPathToPolygon() converts a path to the more efficient sorted
401% rendering form.
402%
403% The format of the ConvertPathToPolygon method is:
404%
405% PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info,
406% ExceptionInfo *exception)
407%
408% A description of each parameter follows:
409%
410% o ConvertPathToPolygon() returns the path in a more efficient sorted
411% rendering form of type PolygonInfo.
412%
413% o draw_info: Specifies a pointer to an DrawInfo structure.
414%
415% o path_info: Specifies a pointer to an PathInfo structure.
416%
417%
418*/
419
420static PolygonInfo *DestroyPolygonInfo(PolygonInfo *polygon_info)
421{
422 ssize_t
423 i;
424
425 if (polygon_info->edges != (EdgeInfo *) NULL)
426 {
427 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
428 if (polygon_info->edges[i].points != (PointInfo *) NULL)
429 polygon_info->edges[i].points=(PointInfo *)
430 RelinquishMagickMemory(polygon_info->edges[i].points);
431 polygon_info->edges=(EdgeInfo *) RelinquishMagickMemory(
432 polygon_info->edges);
433 }
434 return((PolygonInfo *) RelinquishMagickMemory(polygon_info));
435}
436#if defined(__cplusplus) || defined(c_plusplus)
437extern "C" {
438#endif
439
440static int DrawCompareEdges(const void *p_edge,const void *q_edge)
441{
442#define DrawCompareEdge(p,q) \
443{ \
444 if (((p)-(q)) < 0.0) \
445 return(-1); \
446 if (((p)-(q)) > 0.0) \
447 return(1); \
448}
449
450 const PointInfo
451 *p,
452 *q;
453
454 /*
455 Edge sorting for right-handed coordinate system.
456 */
457 p=((const EdgeInfo *) p_edge)->points;
458 q=((const EdgeInfo *) q_edge)->points;
459 DrawCompareEdge(p[0].y,q[0].y);
460 DrawCompareEdge(p[0].x,q[0].x);
461 DrawCompareEdge((p[1].x-p[0].x)*(q[1].y-q[0].y),(p[1].y-p[0].y)*
462 (q[1].x-q[0].x));
463 DrawCompareEdge(p[1].y,q[1].y);
464 DrawCompareEdge(p[1].x,q[1].x);
465 return(0);
466}
467
468#if defined(__cplusplus) || defined(c_plusplus)
469}
470#endif
471
472static void LogPolygonInfo(const PolygonInfo *polygon_info)
473{
474 EdgeInfo
475 *p;
476
477 ssize_t
478 i,
479 j;
480
481 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin active-edge");
482 p=polygon_info->edges;
483 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
484 {
485 (void) LogMagickEvent(DrawEvent,GetMagickModule()," edge %.20g:",
486 (double) i);
487 (void) LogMagickEvent(DrawEvent,GetMagickModule()," direction: %s",
488 p->direction != MagickFalse ? "down" : "up");
489 (void) LogMagickEvent(DrawEvent,GetMagickModule()," ghostline: %s",
490 p->ghostline != MagickFalse ? "transparent" : "opaque");
491 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
492 " bounds: %g,%g - %g,%g",p->bounds.x1,p->bounds.y1,
493 p->bounds.x2,p->bounds.y2);
494 for (j=0; j < (ssize_t) p->number_points; j++)
495 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %g,%g",
496 p->points[j].x,p->points[j].y);
497 p++;
498 }
499 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end active-edge");
500}
501
502static void ReversePoints(PointInfo *points,const size_t number_points)
503{
504 PointInfo
505 point;
506
507 size_t
508 i;
509
510 for (i=0; i < (number_points >> 1); i++)
511 {
512 point=points[i];
513 points[i]=points[number_points-(i+1)];
514 points[number_points-(i+1)]=point;
515 }
516}
517
518static PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info,
519 ExceptionInfo *exception)
520{
521 long
522 direction,
523 next_direction;
524
525 PointInfo
526 point,
527 *points;
528
529 PolygonInfo
530 *polygon_info;
531
532 SegmentInfo
533 bounds;
534
535 ssize_t
536 i,
537 n;
538
539 MagickBooleanType
540 ghostline;
541
542 size_t
543 edge,
544 number_edges,
545 number_points;
546
547 /*
548 Convert a path to the more efficient sorted rendering form.
549 */
550 polygon_info=(PolygonInfo *) AcquireMagickMemory(sizeof(*polygon_info));
551 if (polygon_info == (PolygonInfo *) NULL)
552 {
553 (void) ThrowMagickException(exception,GetMagickModule(),
554 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
555 return((PolygonInfo *) NULL);
556 }
557 number_edges=16;
558 polygon_info->edges=(EdgeInfo *) AcquireQuantumMemory(number_edges,
559 sizeof(*polygon_info->edges));
560 if (polygon_info->edges == (EdgeInfo *) NULL)
561 {
562 (void) ThrowMagickException(exception,GetMagickModule(),
563 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
564 return(DestroyPolygonInfo(polygon_info));
565 }
566 (void) memset(polygon_info->edges,0,number_edges*
567 sizeof(*polygon_info->edges));
568 direction=0;
569 edge=0;
570 ghostline=MagickFalse;
571 n=0;
572 number_points=0;
573 points=(PointInfo *) NULL;
574 (void) memset(&point,0,sizeof(point));
575 (void) memset(&bounds,0,sizeof(bounds));
576 polygon_info->edges[edge].number_points=(size_t) n;
577 polygon_info->edges[edge].scanline=0.0;
578 polygon_info->edges[edge].highwater=0;
579 polygon_info->edges[edge].ghostline=ghostline;
580 polygon_info->edges[edge].direction=(ssize_t) direction;
581 polygon_info->edges[edge].points=points;
582 polygon_info->edges[edge].bounds=bounds;
583 polygon_info->number_edges=0;
584 for (i=0; path_info[i].code != EndCode; i++)
585 {
586 if ((path_info[i].code == MoveToCode) || (path_info[i].code == OpenCode) ||
587 (path_info[i].code == GhostlineCode))
588 {
589 /*
590 Move to.
591 */
592 if ((points != (PointInfo *) NULL) && (n >= 2))
593 {
594 if (edge == number_edges)
595 {
596 number_edges<<=1;
597 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
598 polygon_info->edges,(size_t) number_edges,
599 sizeof(*polygon_info->edges));
600 if (polygon_info->edges == (EdgeInfo *) NULL)
601 {
602 (void) ThrowMagickException(exception,GetMagickModule(),
603 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
604 points=(PointInfo *) RelinquishMagickMemory(points);
605 return(DestroyPolygonInfo(polygon_info));
606 }
607 }
608 polygon_info->edges[edge].number_points=(size_t) n;
609 polygon_info->edges[edge].scanline=(-1.0);
610 polygon_info->edges[edge].highwater=0;
611 polygon_info->edges[edge].ghostline=ghostline;
612 polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
613 if (direction < 0)
614 ReversePoints(points,(size_t) n);
615 polygon_info->edges[edge].points=points;
616 polygon_info->edges[edge].bounds=bounds;
617 polygon_info->edges[edge].bounds.y1=points[0].y;
618 polygon_info->edges[edge].bounds.y2=points[n-1].y;
619 points=(PointInfo *) NULL;
620 ghostline=MagickFalse;
621 edge++;
622 polygon_info->number_edges=edge;
623 }
624 if (points == (PointInfo *) NULL)
625 {
626 number_points=16;
627 points=(PointInfo *) AcquireQuantumMemory((size_t) number_points,
628 sizeof(*points));
629 if (points == (PointInfo *) NULL)
630 {
631 (void) ThrowMagickException(exception,GetMagickModule(),
632 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
633 return(DestroyPolygonInfo(polygon_info));
634 }
635 }
636 ghostline=path_info[i].code == GhostlineCode ? MagickTrue : MagickFalse;
637 point=path_info[i].point;
638 points[0]=point;
639 bounds.x1=point.x;
640 bounds.x2=point.x;
641 direction=0;
642 n=1;
643 continue;
644 }
645 /*
646 Line to.
647 */
648 next_direction=((path_info[i].point.y > point.y) ||
649 ((fabs(path_info[i].point.y-point.y) < MagickEpsilon) &&
650 (path_info[i].point.x > point.x))) ? 1 : -1;
651 if ((points != (PointInfo *) NULL) && (direction != 0) &&
652 (direction != next_direction))
653 {
654 /*
655 New edge.
656 */
657 point=points[n-1];
658 if (edge == number_edges)
659 {
660 number_edges<<=1;
661 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
662 polygon_info->edges,(size_t) number_edges,
663 sizeof(*polygon_info->edges));
664 if (polygon_info->edges == (EdgeInfo *) NULL)
665 {
666 (void) ThrowMagickException(exception,GetMagickModule(),
667 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
668 points=(PointInfo *) RelinquishMagickMemory(points);
669 return(DestroyPolygonInfo(polygon_info));
670 }
671 }
672 polygon_info->edges[edge].number_points=(size_t) n;
673 polygon_info->edges[edge].scanline=(-1.0);
674 polygon_info->edges[edge].highwater=0;
675 polygon_info->edges[edge].ghostline=ghostline;
676 polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
677 if (direction < 0)
678 ReversePoints(points,(size_t) n);
679 polygon_info->edges[edge].points=points;
680 polygon_info->edges[edge].bounds=bounds;
681 polygon_info->edges[edge].bounds.y1=points[0].y;
682 polygon_info->edges[edge].bounds.y2=points[n-1].y;
683 polygon_info->number_edges=edge+1;
684 points=(PointInfo *) NULL;
685 number_points=16;
686 points=(PointInfo *) AcquireQuantumMemory((size_t) number_points,
687 sizeof(*points));
688 if (points == (PointInfo *) NULL)
689 {
690 (void) ThrowMagickException(exception,GetMagickModule(),
691 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
692 return(DestroyPolygonInfo(polygon_info));
693 }
694 n=1;
695 ghostline=MagickFalse;
696 points[0]=point;
697 bounds.x1=point.x;
698 bounds.x2=point.x;
699 edge++;
700 }
701 direction=next_direction;
702 if (points == (PointInfo *) NULL)
703 continue;
704 if (n == (ssize_t) number_points)
705 {
706 number_points<<=1;
707 points=(PointInfo *) ResizeQuantumMemory(points,(size_t) number_points,
708 sizeof(*points));
709 if (points == (PointInfo *) NULL)
710 {
711 (void) ThrowMagickException(exception,GetMagickModule(),
712 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
713 return(DestroyPolygonInfo(polygon_info));
714 }
715 }
716 point=path_info[i].point;
717 points[n]=point;
718 if (point.x < bounds.x1)
719 bounds.x1=point.x;
720 if (point.x > bounds.x2)
721 bounds.x2=point.x;
722 n++;
723 }
724 if (points != (PointInfo *) NULL)
725 {
726 if (n < 2)
727 points=(PointInfo *) RelinquishMagickMemory(points);
728 else
729 {
730 if (edge == number_edges)
731 {
732 number_edges<<=1;
733 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
734 polygon_info->edges,(size_t) number_edges,
735 sizeof(*polygon_info->edges));
736 if (polygon_info->edges == (EdgeInfo *) NULL)
737 {
738 (void) ThrowMagickException(exception,GetMagickModule(),
739 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
740 return(DestroyPolygonInfo(polygon_info));
741 }
742 }
743 polygon_info->edges[edge].number_points=(size_t) n;
744 polygon_info->edges[edge].scanline=(-1.0);
745 polygon_info->edges[edge].highwater=0;
746 polygon_info->edges[edge].ghostline=ghostline;
747 polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
748 if (direction < 0)
749 ReversePoints(points,(size_t) n);
750 polygon_info->edges[edge].points=points;
751 polygon_info->edges[edge].bounds=bounds;
752 polygon_info->edges[edge].bounds.y1=points[0].y;
753 polygon_info->edges[edge].bounds.y2=points[n-1].y;
754 points=(PointInfo *) NULL;
755 ghostline=MagickFalse;
756 edge++;
757 polygon_info->number_edges=edge;
758 }
759 }
760 polygon_info->number_edges=edge;
761 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(polygon_info->edges,
762 polygon_info->number_edges,sizeof(*polygon_info->edges));
763 if (polygon_info->edges == (EdgeInfo *) NULL)
764 {
765 (void) ThrowMagickException(exception,GetMagickModule(),
766 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
767 return(DestroyPolygonInfo(polygon_info));
768 }
769 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
770 {
771 EdgeInfo
772 *edge_info;
773
774 edge_info=polygon_info->edges+i;
775 edge_info->points=(PointInfo *) ResizeQuantumMemory(edge_info->points,
776 edge_info->number_points,sizeof(*edge_info->points));
777 if (edge_info->points == (PointInfo *) NULL)
778 {
779 (void) ThrowMagickException(exception,GetMagickModule(),
780 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
781 return(DestroyPolygonInfo(polygon_info));
782 }
783 }
784 qsort(polygon_info->edges,(size_t) polygon_info->number_edges,
785 sizeof(*polygon_info->edges),DrawCompareEdges);
786 if ((GetLogEventMask() & DrawEvent) != 0)
787 LogPolygonInfo(polygon_info);
788 return(polygon_info);
789}
790␌
791/*
792%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
793% %
794% %
795% %
796+ C o n v e r t P r i m i t i v e T o P a t h %
797% %
798% %
799% %
800%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
801%
802% ConvertPrimitiveToPath() converts a PrimitiveInfo structure into a vector
803% path structure.
804%
805% The format of the ConvertPrimitiveToPath method is:
806%
807% PathInfo *ConvertPrimitiveToPath(const DrawInfo *draw_info,
808% const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
809%
810% A description of each parameter follows:
811%
812% o ConvertPrimitiveToPath() returns a vector path structure of type
813% PathInfo.
814%
815% o draw_info: a structure of type DrawInfo.
816%
817% o primitive_info: Specifies a pointer to an PrimitiveInfo structure.
818%
819*/
820
821static void LogPathInfo(const PathInfo *path_info)
822{
823 const PathInfo
824 *p;
825
826 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin vector-path");
827 for (p=path_info; p->code != EndCode; p++)
828 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
829 " %g,%g %s",p->point.x,p->point.y,p->code == GhostlineCode ?
830 "moveto ghostline" : p->code == OpenCode ? "moveto open" :
831 p->code == MoveToCode ? "moveto" : p->code == LineToCode ? "lineto" :
832 "?");
833 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end vector-path");
834}
835
836static PathInfo *ConvertPrimitiveToPath(const PrimitiveInfo *primitive_info,
837 ExceptionInfo *exception)
838{
839 MagickBooleanType
840 closed_subpath;
841
842 PathInfo
843 *path_info;
844
845 PathInfoCode
846 code;
847
848 PointInfo
849 p,
850 q;
851
852 ssize_t
853 n,
854 start;
855
856 size_t
857 coordinates,
858 i;
859
860 /*
861 Converts a PrimitiveInfo structure into a vector path structure.
862 */
863 switch (primitive_info->primitive)
864 {
865 case AlphaPrimitive:
866 case ColorPrimitive:
867 case ImagePrimitive:
868 case PointPrimitive:
869 case TextPrimitive:
870 return((PathInfo *) NULL);
871 default:
872 break;
873 }
874 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
875 path_info=(PathInfo *) AcquireQuantumMemory((size_t) (3UL*i+1UL),
876 sizeof(*path_info));
877 if (path_info == (PathInfo *) NULL)
878 {
879 (void) ThrowMagickException(exception,GetMagickModule(),
880 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
881 return((PathInfo *) NULL);
882 }
883 coordinates=0;
884 closed_subpath=MagickFalse;
885 n=0;
886 p.x=(-1.0);
887 p.y=(-1.0);
888 q.x=(-1.0);
889 q.y=(-1.0);
890 start=0;
891 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
892 {
893 code=LineToCode;
894 if (coordinates <= 0)
895 {
896 /*
897 New subpath.
898 */
899 coordinates=primitive_info[i].coordinates;
900 p=primitive_info[i].point;
901 start=n;
902 code=MoveToCode;
903 closed_subpath=primitive_info[i].closed_subpath;
904 }
905 coordinates--;
906 if ((code == MoveToCode) || (coordinates <= 0) ||
907 (fabs(q.x-primitive_info[i].point.x) >= MagickEpsilon) ||
908 (fabs(q.y-primitive_info[i].point.y) >= MagickEpsilon))
909 {
910 /*
911 Eliminate duplicate points.
912 */
913 path_info[n].code=code;
914 path_info[n].point=primitive_info[i].point;
915 q=primitive_info[i].point;
916 n++;
917 }
918 if (coordinates > 0)
919 continue; /* next point in current subpath */
920 if (closed_subpath != MagickFalse)
921 {
922 closed_subpath=MagickFalse;
923 continue;
924 }
925 /*
926 Mark the p point as open if the subpath is not closed.
927 */
928 path_info[start].code=OpenCode;
929 path_info[n].code=GhostlineCode;
930 path_info[n].point=primitive_info[i].point;
931 n++;
932 path_info[n].code=LineToCode;
933 path_info[n].point=p;
934 n++;
935 }
936 path_info[n].code=EndCode;
937 path_info[n].point.x=0.0;
938 path_info[n].point.y=0.0;
939 if (IsEventLogging() != MagickFalse)
940 LogPathInfo(path_info);
941 path_info=(PathInfo *) ResizeQuantumMemory(path_info,(size_t) (n+1),
942 sizeof(*path_info));
943 return(path_info);
944}
945␌
946/*
947%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
948% %
949% %
950% %
951% D e s t r o y D r a w I n f o %
952% %
953% %
954% %
955%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
956%
957% DestroyDrawInfo() deallocates memory associated with an DrawInfo structure.
958%
959% The format of the DestroyDrawInfo method is:
960%
961% DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
962%
963% A description of each parameter follows:
964%
965% o draw_info: the draw info.
966%
967*/
968MagickExport DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
969{
970 assert(draw_info != (DrawInfo *) NULL);
971 assert(draw_info->signature == MagickCoreSignature);
972 if (IsEventLogging() != MagickFalse)
973 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
974 if (draw_info->id != (char *) NULL)
975 draw_info->id=DestroyString(draw_info->id);
976 if (draw_info->primitive != (char *) NULL)
977 draw_info->primitive=DestroyString(draw_info->primitive);
978 if (draw_info->text != (char *) NULL)
979 draw_info->text=DestroyString(draw_info->text);
980 if (draw_info->geometry != (char *) NULL)
981 draw_info->geometry=DestroyString(draw_info->geometry);
982 if (draw_info->fill_pattern != (Image *) NULL)
983 draw_info->fill_pattern=DestroyImage(draw_info->fill_pattern);
984 if (draw_info->stroke_pattern != (Image *) NULL)
985 draw_info->stroke_pattern=DestroyImage(draw_info->stroke_pattern);
986 if (draw_info->font != (char *) NULL)
987 draw_info->font=DestroyString(draw_info->font);
988 if (draw_info->metrics != (char *) NULL)
989 draw_info->metrics=DestroyString(draw_info->metrics);
990 if (draw_info->family != (char *) NULL)
991 draw_info->family=DestroyString(draw_info->family);
992 if (draw_info->encoding != (char *) NULL)
993 draw_info->encoding=DestroyString(draw_info->encoding);
994 if (draw_info->density != (char *) NULL)
995 draw_info->density=DestroyString(draw_info->density);
996 if (draw_info->server_name != (char *) NULL)
997 draw_info->server_name=(char *)
998 RelinquishMagickMemory(draw_info->server_name);
999 if (draw_info->dash_pattern != (double *) NULL)
1000 draw_info->dash_pattern=(double *) RelinquishMagickMemory(
1001 draw_info->dash_pattern);
1002 if (draw_info->gradient.stops != (StopInfo *) NULL)
1003 draw_info->gradient.stops=(StopInfo *) RelinquishMagickMemory(
1004 draw_info->gradient.stops);
1005 if (draw_info->clip_mask != (char *) NULL)
1006 draw_info->clip_mask=DestroyString(draw_info->clip_mask);
1007 if (draw_info->clipping_mask != (Image *) NULL)
1008 draw_info->clipping_mask=DestroyImage(draw_info->clipping_mask);
1009 if (draw_info->composite_mask != (Image *) NULL)
1010 draw_info->composite_mask=DestroyImage(draw_info->composite_mask);
1011 if (draw_info->image_info != (ImageInfo *) NULL)
1012 draw_info->image_info=DestroyImageInfo(draw_info->image_info);
1013 draw_info->signature=(~MagickCoreSignature);
1014 draw_info=(DrawInfo *) RelinquishMagickMemory(draw_info);
1015 return(draw_info);
1016}
1017␌
1018/*
1019%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1020% %
1021% %
1022% %
1023% D r a w A f f i n e I m a g e %
1024% %
1025% %
1026% %
1027%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1028%
1029% DrawAffineImage() composites the source over the destination image as
1030% dictated by the affine transform.
1031%
1032% The format of the DrawAffineImage method is:
1033%
1034% MagickBooleanType DrawAffineImage(Image *image,const Image *source,
1035% const AffineMatrix *affine,ExceptionInfo *exception)
1036%
1037% A description of each parameter follows:
1038%
1039% o image: the image.
1040%
1041% o source: the source image.
1042%
1043% o affine: the affine transform.
1044%
1045% o exception: return any errors or warnings in this structure.
1046%
1047*/
1048
1049static SegmentInfo AffineEdge(const Image *image,const AffineMatrix *affine,
1050 const double y,const SegmentInfo *edge)
1051{
1052 double
1053 intercept,
1054 z;
1055
1056 double
1057 x;
1058
1059 SegmentInfo
1060 inverse_edge;
1061
1062 /*
1063 Determine left and right edges.
1064 */
1065 inverse_edge.x1=edge->x1;
1066 inverse_edge.y1=edge->y1;
1067 inverse_edge.x2=edge->x2;
1068 inverse_edge.y2=edge->y2;
1069 z=affine->ry*y+affine->tx;
1070 if (affine->sx >= MagickEpsilon)
1071 {
1072 intercept=(-z/affine->sx);
1073 x=intercept;
1074 if (x > inverse_edge.x1)
1075 inverse_edge.x1=x;
1076 intercept=(-z+(double) image->columns)/affine->sx;
1077 x=intercept;
1078 if (x < inverse_edge.x2)
1079 inverse_edge.x2=x;
1080 }
1081 else
1082 if (affine->sx < -MagickEpsilon)
1083 {
1084 intercept=(-z+(double) image->columns)/affine->sx;
1085 x=intercept;
1086 if (x > inverse_edge.x1)
1087 inverse_edge.x1=x;
1088 intercept=(-z/affine->sx);
1089 x=intercept;
1090 if (x < inverse_edge.x2)
1091 inverse_edge.x2=x;
1092 }
1093 else
1094 if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->columns))
1095 {
1096 inverse_edge.x2=edge->x1;
1097 return(inverse_edge);
1098 }
1099 /*
1100 Determine top and bottom edges.
1101 */
1102 z=affine->sy*y+affine->ty;
1103 if (affine->rx >= MagickEpsilon)
1104 {
1105 intercept=(-z/affine->rx);
1106 x=intercept;
1107 if (x > inverse_edge.x1)
1108 inverse_edge.x1=x;
1109 intercept=(-z+(double) image->rows)/affine->rx;
1110 x=intercept;
1111 if (x < inverse_edge.x2)
1112 inverse_edge.x2=x;
1113 }
1114 else
1115 if (affine->rx < -MagickEpsilon)
1116 {
1117 intercept=(-z+(double) image->rows)/affine->rx;
1118 x=intercept;
1119 if (x > inverse_edge.x1)
1120 inverse_edge.x1=x;
1121 intercept=(-z/affine->rx);
1122 x=intercept;
1123 if (x < inverse_edge.x2)
1124 inverse_edge.x2=x;
1125 }
1126 else
1127 if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->rows))
1128 {
1129 inverse_edge.x2=edge->x2;
1130 return(inverse_edge);
1131 }
1132 return(inverse_edge);
1133}
1134
1135static AffineMatrix InverseAffineMatrix(const AffineMatrix *affine)
1136{
1137 AffineMatrix
1138 inverse_affine;
1139
1140 double
1141 determinant;
1142
1143 determinant=MagickSafeReciprocal(affine->sx*affine->sy-affine->rx*
1144 affine->ry);
1145 inverse_affine.sx=determinant*affine->sy;
1146 inverse_affine.rx=determinant*(-affine->rx);
1147 inverse_affine.ry=determinant*(-affine->ry);
1148 inverse_affine.sy=determinant*affine->sx;
1149 inverse_affine.tx=(-affine->tx)*inverse_affine.sx-affine->ty*
1150 inverse_affine.ry;
1151 inverse_affine.ty=(-affine->tx)*inverse_affine.rx-affine->ty*
1152 inverse_affine.sy;
1153 return(inverse_affine);
1154}
1155
1156MagickExport MagickBooleanType DrawAffineImage(Image *image,
1157 const Image *source,const AffineMatrix *affine,ExceptionInfo *exception)
1158{
1159 AffineMatrix
1160 inverse_affine;
1161
1162 CacheView
1163 *image_view,
1164 *source_view;
1165
1166 MagickBooleanType
1167 status;
1168
1169 PixelInfo
1170 zero;
1171
1172 PointInfo
1173 extent[4],
1174 min,
1175 max;
1176
1177 ssize_t
1178 i;
1179
1180 SegmentInfo
1181 edge;
1182
1183 ssize_t
1184 start,
1185 stop,
1186 y;
1187
1188 /*
1189 Determine bounding box.
1190 */
1191 assert(image != (Image *) NULL);
1192 assert(image->signature == MagickCoreSignature);
1193 if (IsEventLogging() != MagickFalse)
1194 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1195 assert(source != (const Image *) NULL);
1196 assert(source->signature == MagickCoreSignature);
1197 assert(affine != (AffineMatrix *) NULL);
1198 extent[0].x=0.0;
1199 extent[0].y=0.0;
1200 extent[1].x=(double) source->columns;
1201 extent[1].y=0.0;
1202 extent[2].x=(double) source->columns;
1203 extent[2].y=(double) source->rows;
1204 extent[3].x=0.0;
1205 extent[3].y=(double) source->rows;
1206 for (i=0; i < 4; i++)
1207 {
1208 PointInfo
1209 point;
1210
1211 point=extent[i];
1212 extent[i].x=point.x*affine->sx+point.y*affine->ry+affine->tx;
1213 extent[i].y=point.x*affine->rx+point.y*affine->sy+affine->ty;
1214 }
1215 min=extent[0];
1216 max=extent[0];
1217 for (i=1; i < 4; i++)
1218 {
1219 if (min.x > extent[i].x)
1220 min.x=extent[i].x;
1221 if (min.y > extent[i].y)
1222 min.y=extent[i].y;
1223 if (max.x < extent[i].x)
1224 max.x=extent[i].x;
1225 if (max.y < extent[i].y)
1226 max.y=extent[i].y;
1227 }
1228 /*
1229 Affine transform image.
1230 */
1231 if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
1232 return(MagickFalse);
1233 status=MagickTrue;
1234 edge.x1=min.x;
1235 edge.y1=min.y;
1236 edge.x2=max.x;
1237 edge.y2=max.y;
1238 inverse_affine=InverseAffineMatrix(affine);
1239 if (edge.y1 < 0.0)
1240 edge.y1=0.0;
1241 if (edge.y2 > ((double) image->rows-1.0))
1242 edge.y2=(double) image->rows-1.0;
1243 GetPixelInfo(image,&zero);
1244 start=CastDoubleToSsizeT(ceil(edge.y1-0.5));
1245 stop=CastDoubleToSsizeT(floor(edge.y2+0.5));
1246 source_view=AcquireVirtualCacheView(source,exception);
1247 image_view=AcquireAuthenticCacheView(image,exception);
1248#if defined(MAGICKCORE_OPENMP_SUPPORT)
1249 #pragma omp parallel for schedule(static) shared(status) \
1250 magick_number_threads(source,image,(size_t) (stop-start),2)
1251#endif
1252 for (y=start; y <= stop; y++)
1253 {
1254 PixelInfo
1255 composite,
1256 pixel;
1257
1258 PointInfo
1259 point;
1260
1261 Quantum
1262 *magick_restrict q;
1263
1264 SegmentInfo
1265 inverse_edge;
1266
1267 ssize_t
1268 x;
1269
1270 if (status == MagickFalse)
1271 continue;
1272 inverse_edge=AffineEdge(source,&inverse_affine,(double) y,&edge);
1273 if (inverse_edge.x2 < inverse_edge.x1)
1274 continue;
1275 if (inverse_edge.x1 < 0.0)
1276 inverse_edge.x1=0.0;
1277 if (inverse_edge.x2 > ((double) image->columns-1.0))
1278 inverse_edge.x2=(double) image->columns-1.0;
1279 q=GetCacheViewAuthenticPixels(image_view,CastDoubleToSsizeT(
1280 ceil(inverse_edge.x1-0.5)),y,(size_t) CastDoubleToSsizeT(floor(
1281 inverse_edge.x2+0.5)-ceil(inverse_edge.x1-0.5)+1),1,exception);
1282 if (q == (Quantum *) NULL)
1283 continue;
1284 pixel=zero;
1285 composite=zero;
1286 for (x=CastDoubleToSsizeT(ceil(inverse_edge.x1-0.5));
1287 x <= CastDoubleToSsizeT(floor(inverse_edge.x2+0.5)); x++)
1288 {
1289 point.x=(double) x*inverse_affine.sx+y*inverse_affine.ry+
1290 inverse_affine.tx;
1291 point.y=(double) x*inverse_affine.rx+y*inverse_affine.sy+
1292 inverse_affine.ty;
1293 status=InterpolatePixelInfo(source,source_view,UndefinedInterpolatePixel,
1294 point.x,point.y,&pixel,exception);
1295 if (status == MagickFalse)
1296 break;
1297 GetPixelInfoPixel(image,q,&composite);
1298 CompositePixelInfoOver(&pixel,pixel.alpha,&composite,composite.alpha,
1299 &composite);
1300 SetPixelViaPixelInfo(image,&composite,q);
1301 q+=(ptrdiff_t) GetPixelChannels(image);
1302 }
1303 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
1304 status=MagickFalse;
1305 }
1306 source_view=DestroyCacheView(source_view);
1307 image_view=DestroyCacheView(image_view);
1308 return(status);
1309}
1310␌
1311/*
1312%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1313% %
1314% %
1315% %
1316+ D r a w B o u n d i n g R e c t a n g l e s %
1317% %
1318% %
1319% %
1320%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1321%
1322% DrawBoundingRectangles() draws the bounding rectangles on the image. This
1323% is only useful for developers debugging the rendering algorithm.
1324%
1325% The format of the DrawBoundingRectangles method is:
1326%
1327% MagickBooleanType DrawBoundingRectangles(Image *image,
1328% const DrawInfo *draw_info,PolygonInfo *polygon_info,
1329% ExceptionInfo *exception)
1330%
1331% A description of each parameter follows:
1332%
1333% o image: the image.
1334%
1335% o draw_info: the draw info.
1336%
1337% o polygon_info: Specifies a pointer to a PolygonInfo structure.
1338%
1339% o exception: return any errors or warnings in this structure.
1340%
1341*/
1342
1343static MagickBooleanType DrawBoundingRectangles(Image *image,
1344 const DrawInfo *draw_info,const PolygonInfo *polygon_info,
1345 ExceptionInfo *exception)
1346{
1347 double
1348 mid;
1349
1350 DrawInfo
1351 *clone_info;
1352
1353 MagickStatusType
1354 status;
1355
1356 PointInfo
1357 end,
1358 resolution,
1359 start;
1360
1361 PrimitiveInfo
1362 primitive_info[6];
1363
1364 ssize_t
1365 i;
1366
1367 SegmentInfo
1368 bounds;
1369
1370 ssize_t
1371 coordinates;
1372
1373 (void) memset(primitive_info,0,sizeof(primitive_info));
1374 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1375 status=QueryColorCompliance("#000F",AllCompliance,&clone_info->fill,
1376 exception);
1377 if (status == MagickFalse)
1378 {
1379 clone_info=DestroyDrawInfo(clone_info);
1380 return(MagickFalse);
1381 }
1382 resolution.x=96.0;
1383 resolution.y=96.0;
1384 if (clone_info->density != (char *) NULL)
1385 {
1386 GeometryInfo
1387 geometry_info;
1388
1389 MagickStatusType
1390 flags;
1391
1392 flags=ParseGeometry(clone_info->density,&geometry_info);
1393 if ((flags & RhoValue) != 0)
1394 resolution.x=geometry_info.rho;
1395 resolution.y=resolution.x;
1396 if ((flags & SigmaValue) != 0)
1397 resolution.y=geometry_info.sigma;
1398 }
1399 mid=(resolution.x/96.0)*ExpandAffine(&clone_info->affine)*
1400 clone_info->stroke_width/2.0;
1401 bounds.x1=0.0;
1402 bounds.y1=0.0;
1403 bounds.x2=0.0;
1404 bounds.y2=0.0;
1405 if (polygon_info != (PolygonInfo *) NULL)
1406 {
1407 bounds=polygon_info->edges[0].bounds;
1408 for (i=1; i < (ssize_t) polygon_info->number_edges; i++)
1409 {
1410 if (polygon_info->edges[i].bounds.x1 < (double) bounds.x1)
1411 bounds.x1=polygon_info->edges[i].bounds.x1;
1412 if (polygon_info->edges[i].bounds.y1 < (double) bounds.y1)
1413 bounds.y1=polygon_info->edges[i].bounds.y1;
1414 if (polygon_info->edges[i].bounds.x2 > (double) bounds.x2)
1415 bounds.x2=polygon_info->edges[i].bounds.x2;
1416 if (polygon_info->edges[i].bounds.y2 > (double) bounds.y2)
1417 bounds.y2=polygon_info->edges[i].bounds.y2;
1418 }
1419 bounds.x1-=mid;
1420 bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double)
1421 image->columns ? (double) image->columns-1 : bounds.x1;
1422 bounds.y1-=mid;
1423 bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double)
1424 image->rows ? (double) image->rows-1 : bounds.y1;
1425 bounds.x2+=mid;
1426 bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double)
1427 image->columns ? (double) image->columns-1 : bounds.x2;
1428 bounds.y2+=mid;
1429 bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double)
1430 image->rows ? (double) image->rows-1 : bounds.y2;
1431 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
1432 {
1433 if (polygon_info->edges[i].direction != 0)
1434 status=QueryColorCompliance("#f00",AllCompliance,&clone_info->stroke,
1435 exception);
1436 else
1437 status=QueryColorCompliance("#0f0",AllCompliance,&clone_info->stroke,
1438 exception);
1439 if (status == MagickFalse)
1440 break;
1441 start.x=(double) (polygon_info->edges[i].bounds.x1-mid);
1442 start.y=(double) (polygon_info->edges[i].bounds.y1-mid);
1443 end.x=(double) (polygon_info->edges[i].bounds.x2+mid);
1444 end.y=(double) (polygon_info->edges[i].bounds.y2+mid);
1445 primitive_info[0].primitive=RectanglePrimitive;
1446 status&=(MagickStatusType) TraceRectangle(primitive_info,start,end);
1447 primitive_info[0].method=ReplaceMethod;
1448 coordinates=(ssize_t) primitive_info[0].coordinates;
1449 primitive_info[coordinates].primitive=UndefinedPrimitive;
1450 status=DrawPrimitive(image,clone_info,primitive_info,exception);
1451 if (status == MagickFalse)
1452 break;
1453 }
1454 if (i < (ssize_t) polygon_info->number_edges)
1455 {
1456 clone_info=DestroyDrawInfo(clone_info);
1457 return(status == 0 ? MagickFalse : MagickTrue);
1458 }
1459 }
1460 status=QueryColorCompliance("#00f",AllCompliance,&clone_info->stroke,
1461 exception);
1462 if (status == MagickFalse)
1463 {
1464 clone_info=DestroyDrawInfo(clone_info);
1465 return(MagickFalse);
1466 }
1467 start.x=(double) (bounds.x1-mid);
1468 start.y=(double) (bounds.y1-mid);
1469 end.x=(double) (bounds.x2+mid);
1470 end.y=(double) (bounds.y2+mid);
1471 primitive_info[0].primitive=RectanglePrimitive;
1472 status&=(MagickStatusType) TraceRectangle(primitive_info,start,end);
1473 primitive_info[0].method=ReplaceMethod;
1474 coordinates=(ssize_t) primitive_info[0].coordinates;
1475 primitive_info[coordinates].primitive=UndefinedPrimitive;
1476 status=DrawPrimitive(image,clone_info,primitive_info,exception);
1477 clone_info=DestroyDrawInfo(clone_info);
1478 return(status == 0 ? MagickFalse : MagickTrue);
1479}
1480␌
1481/*
1482%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1483% %
1484% %
1485% %
1486% D r a w C l i p P a t h %
1487% %
1488% %
1489% %
1490%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1491%
1492% DrawClipPath() draws the clip path on the image mask.
1493%
1494% The format of the DrawClipPath method is:
1495%
1496% MagickBooleanType DrawClipPath(Image *image,const DrawInfo *draw_info,
1497% const char *id,ExceptionInfo *exception)
1498%
1499% A description of each parameter follows:
1500%
1501% o image: the image.
1502%
1503% o draw_info: the draw info.
1504%
1505% o id: the clip path id.
1506%
1507% o exception: return any errors or warnings in this structure.
1508%
1509*/
1510MagickExport MagickBooleanType DrawClipPath(Image *image,
1511 const DrawInfo *draw_info,const char *id,ExceptionInfo *exception)
1512{
1513 const char
1514 *clip_path;
1515
1516 Image
1517 *clipping_mask;
1518
1519 MagickBooleanType
1520 status;
1521
1522 clip_path=GetImageArtifact(image,id);
1523 if (clip_path == (const char *) NULL)
1524 return(MagickFalse);
1525 clipping_mask=DrawClippingMask(image,draw_info,draw_info->clip_mask,clip_path,
1526 exception);
1527 if (clipping_mask == (Image *) NULL)
1528 return(MagickFalse);
1529 status=SetImageMask(image,WritePixelMask,clipping_mask,exception);
1530 clipping_mask=DestroyImage(clipping_mask);
1531 return(status);
1532}
1533␌
1534/*
1535%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1536% %
1537% %
1538% %
1539% D r a w C l i p p i n g M a s k %
1540% %
1541% %
1542% %
1543%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1544%
1545% DrawClippingMask() draws the clip path and returns it as an image clipping
1546% mask.
1547%
1548% The format of the DrawClippingMask method is:
1549%
1550% Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1551% const char *id,const char *clip_path,ExceptionInfo *exception)
1552%
1553% A description of each parameter follows:
1554%
1555% o image: the image.
1556%
1557% o draw_info: the draw info.
1558%
1559% o id: the clip path id.
1560%
1561% o clip_path: the clip path.
1562%
1563% o exception: return any errors or warnings in this structure.
1564%
1565*/
1566static Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1567 const char *id,const char *clip_path,ExceptionInfo *exception)
1568{
1569 DrawInfo
1570 *clone_info;
1571
1572 Image
1573 *clip_mask,
1574 *separate_mask;
1575
1576 MagickStatusType
1577 status;
1578
1579 /*
1580 Draw a clip path.
1581 */
1582 assert(image != (Image *) NULL);
1583 assert(image->signature == MagickCoreSignature);
1584 assert(draw_info != (const DrawInfo *) NULL);
1585 if (IsEventLogging() != MagickFalse)
1586 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1587 clip_mask=AcquireImage((const ImageInfo *) NULL,exception);
1588 status=SetImageExtent(clip_mask,image->columns,image->rows,exception);
1589 if (status == MagickFalse)
1590 return(DestroyImage(clip_mask));
1591 status=SetImageMask(clip_mask,WritePixelMask,(Image *) NULL,exception);
1592 status=QueryColorCompliance("#0000",AllCompliance,
1593 &clip_mask->background_color,exception);
1594 clip_mask->background_color.alpha=(MagickRealType) TransparentAlpha;
1595 clip_mask->background_color.alpha_trait=BlendPixelTrait;
1596 status=SetImageBackgroundColor(clip_mask,exception);
1597 if (draw_info->debug != MagickFalse)
1598 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin clip-path %s",
1599 id);
1600 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1601 (void) CloneString(&clone_info->primitive,clip_path);
1602 status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1603 exception);
1604 if (clone_info->clip_mask != (char *) NULL)
1605 clone_info->clip_mask=DestroyString(clone_info->clip_mask);
1606 status=QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1607 exception);
1608 clone_info->stroke_width=0.0;
1609 clone_info->alpha=OpaqueAlpha;
1610 clone_info->clip_path=MagickTrue;
1611 status=RenderMVGContent(clip_mask,clone_info,0,exception);
1612 clone_info=DestroyDrawInfo(clone_info);
1613 separate_mask=SeparateImage(clip_mask,AlphaChannel,exception);
1614 if (separate_mask == (Image *) NULL)
1615 status=MagickFalse;
1616 else
1617 {
1618 clip_mask=DestroyImage(clip_mask);
1619 clip_mask=separate_mask;
1620 status&=(MagickStatusType) NegateImage(clip_mask,MagickFalse,exception);
1621 }
1622 if (status == MagickFalse)
1623 clip_mask=DestroyImage(clip_mask);
1624 if (draw_info->debug != MagickFalse)
1625 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end clip-path");
1626 return(clip_mask);
1627}
1628␌
1629/*
1630%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1631% %
1632% %
1633% %
1634% D r a w C o m p o s i t e M a s k %
1635% %
1636% %
1637% %
1638%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1639%
1640% DrawCompositeMask() draws the mask path and returns it as an image mask.
1641%
1642% The format of the DrawCompositeMask method is:
1643%
1644% Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1645% const char *id,const char *mask_path,ExceptionInfo *exception)
1646%
1647% A description of each parameter follows:
1648%
1649% o image: the image.
1650%
1651% o draw_info: the draw info.
1652%
1653% o id: the mask path id.
1654%
1655% o mask_path: the mask path.
1656%
1657% o exception: return any errors or warnings in this structure.
1658%
1659*/
1660static Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1661 const char *id,const char *mask_path,ExceptionInfo *exception)
1662{
1663 Image
1664 *composite_mask,
1665 *separate_mask;
1666
1667 DrawInfo
1668 *clone_info;
1669
1670 MagickStatusType
1671 status;
1672
1673 /*
1674 Draw a mask path.
1675 */
1676 assert(image != (Image *) NULL);
1677 assert(image->signature == MagickCoreSignature);
1678 assert(draw_info != (const DrawInfo *) NULL);
1679 if (IsEventLogging() != MagickFalse)
1680 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1681 composite_mask=AcquireImage((const ImageInfo *) NULL,exception);
1682 status=SetImageExtent(composite_mask,image->columns,image->rows,exception);
1683 if (status == MagickFalse)
1684 return(DestroyImage(composite_mask));
1685 status=SetImageMask(composite_mask,CompositePixelMask,(Image *) NULL,
1686 exception);
1687 status=QueryColorCompliance("#0000",AllCompliance,
1688 &composite_mask->background_color,exception);
1689 composite_mask->background_color.alpha=(MagickRealType) TransparentAlpha;
1690 composite_mask->background_color.alpha_trait=BlendPixelTrait;
1691 (void) SetImageBackgroundColor(composite_mask,exception);
1692 if (draw_info->debug != MagickFalse)
1693 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin mask-path %s",
1694 id);
1695 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1696 (void) CloneString(&clone_info->primitive,mask_path);
1697 status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1698 exception);
1699 status=QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1700 exception);
1701 clone_info->stroke_width=0.0;
1702 clone_info->alpha=OpaqueAlpha;
1703 status=RenderMVGContent(composite_mask,clone_info,0,exception);
1704 clone_info=DestroyDrawInfo(clone_info);
1705 separate_mask=SeparateImage(composite_mask,AlphaChannel,exception);
1706 if (separate_mask != (Image *) NULL)
1707 {
1708 composite_mask=DestroyImage(composite_mask);
1709 composite_mask=separate_mask;
1710 status=NegateImage(composite_mask,MagickFalse,exception);
1711 if (status == MagickFalse)
1712 composite_mask=DestroyImage(composite_mask);
1713 }
1714 if (status == MagickFalse)
1715 composite_mask=DestroyImage(composite_mask);
1716 if (draw_info->debug != MagickFalse)
1717 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end mask-path");
1718 return(composite_mask);
1719}
1720␌
1721/*
1722%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1723% %
1724% %
1725% %
1726+ D r a w D a s h P o l y g o n %
1727% %
1728% %
1729% %
1730%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1731%
1732% DrawDashPolygon() draws a dashed polygon (line, rectangle, ellipse) on the
1733% image while respecting the dash offset and dash pattern attributes.
1734%
1735% The format of the DrawDashPolygon method is:
1736%
1737% MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1738% const PrimitiveInfo *primitive_info,Image *image,
1739% ExceptionInfo *exception)
1740%
1741% A description of each parameter follows:
1742%
1743% o draw_info: the draw info.
1744%
1745% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
1746%
1747% o image: the image.
1748%
1749% o exception: return any errors or warnings in this structure.
1750%
1751*/
1752static MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1753 const PrimitiveInfo *primitive_info,Image *image,ExceptionInfo *exception)
1754{
1755 double
1756 dx,
1757 dy,
1758 length,
1759 maximum_length,
1760 offset,
1761 scale,
1762 total_length;
1763
1764 DrawInfo
1765 *clone_info;
1766
1767 MagickStatusType
1768 status;
1769
1770 PrimitiveInfo
1771 *dash_polygon;
1772
1773 ssize_t
1774 i;
1775
1776 size_t
1777 number_vertices;
1778
1779 ssize_t
1780 j,
1781 n;
1782
1783 assert(draw_info != (const DrawInfo *) NULL);
1784 if (draw_info->debug != MagickFalse)
1785 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-dash");
1786 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
1787 number_vertices=(size_t) i;
1788 dash_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
1789 (2UL*number_vertices+32UL),sizeof(*dash_polygon));
1790 if (dash_polygon == (PrimitiveInfo *) NULL)
1791 {
1792 (void) ThrowMagickException(exception,GetMagickModule(),
1793 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
1794 return(MagickFalse);
1795 }
1796 (void) memset(dash_polygon,0,(2UL*number_vertices+32UL)*
1797 sizeof(*dash_polygon));
1798 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1799 clone_info->miterlimit=0;
1800 dash_polygon[0]=primitive_info[0];
1801 dash_polygon[0].closed_subpath=MagickFalse;
1802 scale=ExpandAffine(&draw_info->affine);
1803 length=scale*draw_info->dash_pattern[0];
1804 offset=fabs(draw_info->dash_offset) >= MagickEpsilon ?
1805 scale*draw_info->dash_offset : 0.0;
1806 j=1;
1807 for (n=0; offset > 0.0; j=0)
1808 {
1809 if (draw_info->dash_pattern[n] <= 0.0)
1810 break;
1811 length=scale*(draw_info->dash_pattern[n]+(n == 0 ? -0.5 : 0.5));
1812 if (offset > length)
1813 {
1814 offset-=length;
1815 n++;
1816 length=scale*draw_info->dash_pattern[n];
1817 continue;
1818 }
1819 if (offset < length)
1820 {
1821 length-=offset;
1822 offset=0.0;
1823 break;
1824 }
1825 offset=0.0;
1826 n++;
1827 }
1828 status=MagickTrue;
1829 maximum_length=0.0;
1830 total_length=0.0;
1831 for (i=1; (i < (ssize_t) number_vertices) && (length >= 0.0); i++)
1832 {
1833 dx=primitive_info[i].point.x-primitive_info[i-1].point.x;
1834 dy=primitive_info[i].point.y-primitive_info[i-1].point.y;
1835 maximum_length=hypot(dx,dy);
1836 if (maximum_length > (double) (MaxBezierCoordinates >> 2))
1837 continue;
1838 if (fabs(length) < MagickEpsilon)
1839 {
1840 if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1841 n++;
1842 if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1843 n=0;
1844 length=scale*draw_info->dash_pattern[n];
1845 }
1846 for (total_length=0.0; (length >= 0.0) && (maximum_length >= (total_length+length)); )
1847 {
1848 total_length+=length;
1849 if ((n & 0x01) != 0)
1850 {
1851 dash_polygon[0]=primitive_info[0];
1852 dash_polygon[0].closed_subpath=MagickFalse;
1853 dash_polygon[0].point.x=(double) (primitive_info[i-1].point.x+dx*
1854 total_length*MagickSafeReciprocal(maximum_length));
1855 dash_polygon[0].point.y=(double) (primitive_info[i-1].point.y+dy*
1856 total_length*MagickSafeReciprocal(maximum_length));
1857 j=1;
1858 }
1859 else
1860 {
1861 if ((j+1) > (ssize_t) number_vertices)
1862 break;
1863 dash_polygon[j]=primitive_info[i-1];
1864 dash_polygon[j].closed_subpath=MagickFalse;
1865 dash_polygon[j].point.x=(double) (primitive_info[i-1].point.x+dx*
1866 total_length*MagickSafeReciprocal(maximum_length));
1867 dash_polygon[j].point.y=(double) (primitive_info[i-1].point.y+dy*
1868 total_length*MagickSafeReciprocal(maximum_length));
1869 dash_polygon[j].coordinates=1;
1870 j++;
1871 dash_polygon[0].coordinates=(size_t) j;
1872 dash_polygon[j].primitive=UndefinedPrimitive;
1873 status&=(MagickStatusType) DrawStrokePolygon(image,clone_info,
1874 dash_polygon,exception);
1875 if (status == MagickFalse)
1876 break;
1877 }
1878 if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1879 n++;
1880 if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1881 n=0;
1882 length=scale*draw_info->dash_pattern[n];
1883 }
1884 length-=(maximum_length-total_length);
1885 if ((n & 0x01) != 0)
1886 continue;
1887 dash_polygon[j]=primitive_info[i];
1888 dash_polygon[j].coordinates=1;
1889 j++;
1890 }
1891 if ((status != MagickFalse) && (total_length < maximum_length) &&
1892 ((n & 0x01) == 0) && (j > 1))
1893 {
1894 dash_polygon[j]=primitive_info[i-1];
1895 dash_polygon[j].closed_subpath=MagickFalse;
1896 dash_polygon[j].point.x+=MagickEpsilon;
1897 dash_polygon[j].point.y+=MagickEpsilon;
1898 dash_polygon[j].coordinates=1;
1899 j++;
1900 dash_polygon[0].coordinates=(size_t) j;
1901 dash_polygon[j].primitive=UndefinedPrimitive;
1902 status&=(MagickStatusType) DrawStrokePolygon(image,clone_info,
1903 dash_polygon,exception);
1904 }
1905 dash_polygon=(PrimitiveInfo *) RelinquishMagickMemory(dash_polygon);
1906 clone_info=DestroyDrawInfo(clone_info);
1907 if (draw_info->debug != MagickFalse)
1908 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-dash");
1909 return(status != 0 ? MagickTrue : MagickFalse);
1910}
1911␌
1912/*
1913%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1914% %
1915% %
1916% %
1917% D r a w G r a d i e n t I m a g e %
1918% %
1919% %
1920% %
1921%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1922%
1923% DrawGradientImage() draws a linear gradient on the image.
1924%
1925% The format of the DrawGradientImage method is:
1926%
1927% MagickBooleanType DrawGradientImage(Image *image,
1928% const DrawInfo *draw_info,ExceptionInfo *exception)
1929%
1930% A description of each parameter follows:
1931%
1932% o image: the image.
1933%
1934% o draw_info: the draw info.
1935%
1936% o exception: return any errors or warnings in this structure.
1937%
1938*/
1939
1940static inline double GetStopColorOffset(const GradientInfo *gradient,
1941 const ssize_t x,const ssize_t y)
1942{
1943 switch (gradient->type)
1944 {
1945 case UndefinedGradient:
1946 case LinearGradient:
1947 {
1948 double
1949 gamma,
1950 length,
1951 offset,
1952 scale;
1953
1954 PointInfo
1955 p,
1956 q;
1957
1958 const SegmentInfo
1959 *gradient_vector;
1960
1961 gradient_vector=(&gradient->gradient_vector);
1962 p.x=gradient_vector->x2-gradient_vector->x1;
1963 p.y=gradient_vector->y2-gradient_vector->y1;
1964 q.x=(double) x-gradient_vector->x1;
1965 q.y=(double) y-gradient_vector->y1;
1966 length=sqrt(q.x*q.x+q.y*q.y);
1967 gamma=sqrt(p.x*p.x+p.y*p.y)*length;
1968 gamma=MagickSafeReciprocal(gamma);
1969 scale=p.x*q.x+p.y*q.y;
1970 offset=gamma*scale*length;
1971 return(offset);
1972 }
1973 case RadialGradient:
1974 {
1975 PointInfo
1976 v;
1977
1978 if (gradient->spread == RepeatSpread)
1979 {
1980 v.x=(double) x-gradient->center.x;
1981 v.y=(double) y-gradient->center.y;
1982 return(sqrt(v.x*v.x+v.y*v.y));
1983 }
1984 v.x=(double) (((x-gradient->center.x)*cos(DegreesToRadians(
1985 gradient->angle)))+((y-gradient->center.y)*sin(DegreesToRadians(
1986 gradient->angle))))*MagickSafeReciprocal(gradient->radii.x);
1987 v.y=(double) (((x-gradient->center.x)*sin(DegreesToRadians(
1988 gradient->angle)))-((y-gradient->center.y)*cos(DegreesToRadians(
1989 gradient->angle))))*MagickSafeReciprocal(gradient->radii.y);
1990 return(sqrt(v.x*v.x+v.y*v.y));
1991 }
1992 }
1993 return(0.0);
1994}
1995
1996static int StopInfoCompare(const void *x,const void *y)
1997{
1998 StopInfo
1999 *stop_1,
2000 *stop_2;
2001
2002 stop_1=(StopInfo *) x;
2003 stop_2=(StopInfo *) y;
2004 if (stop_1->offset > stop_2->offset)
2005 return(1);
2006 if (fabs(stop_1->offset-stop_2->offset) <= MagickEpsilon)
2007 return(0);
2008 return(-1);
2009}
2010
2011MagickExport MagickBooleanType DrawGradientImage(Image *image,
2012 const DrawInfo *draw_info,ExceptionInfo *exception)
2013{
2014 CacheView
2015 *image_view;
2016
2017 const GradientInfo
2018 *gradient;
2019
2020 const SegmentInfo
2021 *gradient_vector;
2022
2023 double
2024 length;
2025
2026 MagickBooleanType
2027 status;
2028
2029 PixelInfo
2030 zero;
2031
2032 PointInfo
2033 point;
2034
2035 RectangleInfo
2036 bounding_box;
2037
2038 size_t
2039 height;
2040
2041 ssize_t
2042 y;
2043
2044 /*
2045 Draw linear or radial gradient on image.
2046 */
2047 assert(image != (Image *) NULL);
2048 assert(image->signature == MagickCoreSignature);
2049 assert(draw_info != (const DrawInfo *) NULL);
2050 if (IsEventLogging() != MagickFalse)
2051 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2052 gradient=(&draw_info->gradient);
2053 qsort(gradient->stops,gradient->number_stops,sizeof(StopInfo),
2054 StopInfoCompare);
2055 gradient_vector=(&gradient->gradient_vector);
2056 point.x=gradient_vector->x2-gradient_vector->x1;
2057 point.y=gradient_vector->y2-gradient_vector->y1;
2058 length=sqrt(point.x*point.x+point.y*point.y);
2059 bounding_box=gradient->bounding_box;
2060 status=MagickTrue;
2061 GetPixelInfo(image,&zero);
2062 image_view=AcquireAuthenticCacheView(image,exception);
2063 height=(size_t) (bounding_box.y+(ssize_t) bounding_box.height);
2064#if defined(MAGICKCORE_OPENMP_SUPPORT)
2065 #pragma omp parallel for schedule(static) shared(status) \
2066 magick_number_threads(image,image,height,1)
2067#endif
2068 for (y=bounding_box.y; y < (ssize_t) height; y++)
2069 {
2070 double
2071 alpha,
2072 offset;
2073
2074 PixelInfo
2075 composite,
2076 pixel;
2077
2078 Quantum
2079 *magick_restrict q;
2080
2081 size_t
2082 width;
2083
2084 ssize_t
2085 i,
2086 j,
2087 x;
2088
2089 if (status == MagickFalse)
2090 continue;
2091 q=GetCacheViewAuthenticPixels(image_view,bounding_box.x,y,(size_t)
2092 bounding_box.width,1,exception);
2093 if (q == (Quantum *) NULL)
2094 {
2095 status=MagickFalse;
2096 continue;
2097 }
2098 pixel=zero;
2099 composite=zero;
2100 offset=GetStopColorOffset(gradient,0,y);
2101 if (gradient->type != RadialGradient)
2102 offset*=MagickSafeReciprocal(length);
2103 width=(size_t) (bounding_box.x+(ssize_t) bounding_box.width);
2104 for (x=bounding_box.x; x < (ssize_t) width; x++)
2105 {
2106 GetPixelInfoPixel(image,q,&pixel);
2107 switch (gradient->spread)
2108 {
2109 case UndefinedSpread:
2110 case PadSpread:
2111 {
2112 if ((x != CastDoubleToSsizeT(ceil(gradient_vector->x1-0.5))) ||
2113 (y != CastDoubleToSsizeT(ceil(gradient_vector->y1-0.5))))
2114 {
2115 offset=GetStopColorOffset(gradient,x,y);
2116 if (gradient->type != RadialGradient)
2117 offset*=MagickSafeReciprocal(length);
2118 }
2119 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2120 if (offset < gradient->stops[i].offset)
2121 break;
2122 if ((offset < 0.0) || (i == 0))
2123 composite=gradient->stops[0].color;
2124 else
2125 if ((offset > 1.0) || (i == (ssize_t) gradient->number_stops))
2126 composite=gradient->stops[gradient->number_stops-1].color;
2127 else
2128 {
2129 j=i;
2130 i--;
2131 alpha=(offset-gradient->stops[i].offset)/
2132 (gradient->stops[j].offset-gradient->stops[i].offset);
2133 CompositePixelInfoBlend(&gradient->stops[i].color,1.0-alpha,
2134 &gradient->stops[j].color,alpha,&composite);
2135 }
2136 break;
2137 }
2138 case ReflectSpread:
2139 {
2140 if ((x != CastDoubleToSsizeT(ceil(gradient_vector->x1-0.5))) ||
2141 (y != CastDoubleToSsizeT(ceil(gradient_vector->y1-0.5))))
2142 {
2143 offset=GetStopColorOffset(gradient,x,y);
2144 if (gradient->type != RadialGradient)
2145 offset*=MagickSafeReciprocal(length);
2146 }
2147 if (offset < 0.0)
2148 offset=(-offset);
2149 if ((ssize_t) fmod(offset,2.0) == 0)
2150 offset=fmod(offset,1.0);
2151 else
2152 offset=1.0-fmod(offset,1.0);
2153 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2154 if (offset < gradient->stops[i].offset)
2155 break;
2156 if (i == 0)
2157 composite=gradient->stops[0].color;
2158 else
2159 if (i == (ssize_t) gradient->number_stops)
2160 composite=gradient->stops[gradient->number_stops-1].color;
2161 else
2162 {
2163 j=i;
2164 i--;
2165 alpha=(offset-gradient->stops[i].offset)/
2166 (gradient->stops[j].offset-gradient->stops[i].offset);
2167 CompositePixelInfoBlend(&gradient->stops[i].color,1.0-alpha,
2168 &gradient->stops[j].color,alpha,&composite);
2169 }
2170 break;
2171 }
2172 case RepeatSpread:
2173 {
2174 double
2175 repeat;
2176
2177 MagickBooleanType
2178 antialias;
2179
2180 antialias=MagickFalse;
2181 repeat=0.0;
2182 if ((x != CastDoubleToSsizeT(ceil(gradient_vector->x1-0.5))) ||
2183 (y != CastDoubleToSsizeT(ceil(gradient_vector->y1-0.5))))
2184 {
2185 offset=GetStopColorOffset(gradient,x,y);
2186 if (gradient->type == LinearGradient)
2187 {
2188 repeat=fmod(offset,length);
2189 if (repeat < 0.0)
2190 repeat=length-fmod(-repeat,length);
2191 else
2192 repeat=fmod(offset,length);
2193 antialias=(repeat < length) && ((repeat+1.0) > length) ?
2194 MagickTrue : MagickFalse;
2195 offset=MagickSafeReciprocal(length)*repeat;
2196 }
2197 else
2198 {
2199 repeat=fmod(offset,gradient->radius);
2200 if (repeat < 0.0)
2201 repeat=gradient->radius-fmod(-repeat,gradient->radius);
2202 else
2203 repeat=fmod(offset,gradient->radius);
2204 antialias=repeat+1.0 > gradient->radius ? MagickTrue :
2205 MagickFalse;
2206 offset=repeat*MagickSafeReciprocal(gradient->radius);
2207 }
2208 }
2209 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2210 if (offset < gradient->stops[i].offset)
2211 break;
2212 if (i == 0)
2213 composite=gradient->stops[0].color;
2214 else
2215 if (i == (ssize_t) gradient->number_stops)
2216 composite=gradient->stops[gradient->number_stops-1].color;
2217 else
2218 {
2219 j=i;
2220 i--;
2221 alpha=(offset-gradient->stops[i].offset)/
2222 (gradient->stops[j].offset-gradient->stops[i].offset);
2223 if (antialias != MagickFalse)
2224 {
2225 if (gradient->type == LinearGradient)
2226 alpha=length-repeat;
2227 else
2228 alpha=gradient->radius-repeat;
2229 i=0;
2230 j=(ssize_t) gradient->number_stops-1L;
2231 }
2232 CompositePixelInfoBlend(&gradient->stops[i].color,1.0-alpha,
2233 &gradient->stops[j].color,alpha,&composite);
2234 }
2235 break;
2236 }
2237 }
2238 CompositePixelInfoOver(&composite,composite.alpha,&pixel,pixel.alpha,
2239 &pixel);
2240 SetPixelViaPixelInfo(image,&pixel,q);
2241 q+=(ptrdiff_t) GetPixelChannels(image);
2242 }
2243 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2244 status=MagickFalse;
2245 }
2246 image_view=DestroyCacheView(image_view);
2247 return(status);
2248}
2249␌
2250/*
2251%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2252% %
2253% %
2254% %
2255% D r a w I m a g e %
2256% %
2257% %
2258% %
2259%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2260%
2261% DrawImage() draws a graphic primitive on your image. The primitive
2262% may be represented as a string or filename. Precede the filename with an
2263% "at" sign (@) and the contents of the file are drawn on the image. You
2264% can affect how text is drawn by setting one or more members of the draw
2265% info structure.
2266%
2267% The format of the DrawImage method is:
2268%
2269% MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info,
2270% ExceptionInfo *exception)
2271%
2272% A description of each parameter follows:
2273%
2274% o image: the image.
2275%
2276% o draw_info: the draw info.
2277%
2278% o exception: return any errors or warnings in this structure.
2279%
2280*/
2281
2282static MagickBooleanType CheckPrimitiveExtent(MVGInfo *mvg_info,
2283 const double pad)
2284{
2285 char
2286 **text = (char **) NULL;
2287
2288 double
2289 extent;
2290
2291 size_t
2292 quantum;
2293
2294 ssize_t
2295 i;
2296
2297 /*
2298 Check if there is enough storage for drawing primitives.
2299 */
2300 quantum=sizeof(**mvg_info->primitive_info);
2301 extent=(double) mvg_info->offset+pad+(PrimitiveExtentPad+1)*(double) quantum;
2302 if (extent <= (double) *mvg_info->extent)
2303 return(MagickTrue);
2304 if ((extent >= (double) MAGICK_SSIZE_MAX) || (IsNaN(extent) != 0))
2305 return(MagickFalse);
2306 if (mvg_info->offset > 0)
2307 {
2308 text=(char **) AcquireQuantumMemory((size_t) mvg_info->offset,
2309 sizeof(*text));
2310 if (text == (char **) NULL)
2311 return(MagickFalse);
2312 for (i=0; i < mvg_info->offset; i++)
2313 text[i]=(*mvg_info->primitive_info)[i].text;
2314 }
2315 *mvg_info->primitive_info=(PrimitiveInfo *) ResizeQuantumMemory(
2316 *mvg_info->primitive_info,(size_t) (extent+1),quantum);
2317 if (*mvg_info->primitive_info != (PrimitiveInfo *) NULL)
2318 {
2319 if (text != (char **) NULL)
2320 text=(char **) RelinquishMagickMemory(text);
2321 *mvg_info->extent=(size_t) extent;
2322 for (i=mvg_info->offset+1; i <= (ssize_t) extent; i++)
2323 {
2324 (*mvg_info->primitive_info)[i].primitive=UndefinedPrimitive;
2325 (*mvg_info->primitive_info)[i].text=(char *) NULL;
2326 }
2327 return(MagickTrue);
2328 }
2329 /*
2330 Reallocation failed, allocate a primitive to facilitate unwinding.
2331 */
2332 if (text != (char **) NULL)
2333 {
2334 for (i=0; i < mvg_info->offset; i++)
2335 if (text[i] != (char *) NULL)
2336 text[i]=DestroyString(text[i]);
2337 text=(char **) RelinquishMagickMemory(text);
2338 }
2339 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
2340 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
2341 *mvg_info->primitive_info=(PrimitiveInfo *) AcquireCriticalMemory((size_t)
2342 (PrimitiveExtentPad+1)*quantum);
2343 (void) memset(*mvg_info->primitive_info,0,(size_t) ((PrimitiveExtentPad+1)*
2344 quantum));
2345 *mvg_info->extent=1;
2346 mvg_info->offset=0;
2347 return(MagickFalse);
2348}
2349
2350static inline double GetDrawValue(const char *magick_restrict string,
2351 char **magick_restrict sentinel)
2352{
2353 char
2354 **magick_restrict q;
2355
2356 double
2357 value;
2358
2359 q=sentinel;
2360 value=InterpretLocaleValue(string,q);
2361 sentinel=q;
2362 return(value);
2363}
2364
2365static int MVGMacroCompare(const void *target,const void *source)
2366{
2367 const char
2368 *p,
2369 *q;
2370
2371 p=(const char *) target;
2372 q=(const char *) source;
2373 return(strcmp(p,q));
2374}
2375
2376static SplayTreeInfo *GetMVGMacros(const char *primitive)
2377{
2378 char
2379 *macro,
2380 *token;
2381
2382 const char
2383 *q;
2384
2385 size_t
2386 extent;
2387
2388 SplayTreeInfo
2389 *macros;
2390
2391 /*
2392 Scan graphic primitives for definitions and classes.
2393 */
2394 if (primitive == (const char *) NULL)
2395 return((SplayTreeInfo *) NULL);
2396 macros=NewSplayTree(MVGMacroCompare,RelinquishMagickMemory,
2397 RelinquishMagickMemory);
2398 macro=AcquireString(primitive);
2399 token=AcquireString(primitive);
2400 extent=strlen(token)+MagickPathExtent;
2401 for (q=primitive; *q != '\0'; )
2402 {
2403 if (GetNextToken(q,&q,extent,token) < 1)
2404 break;
2405 if (*token == '\0')
2406 break;
2407 if (LocaleCompare("push",token) == 0)
2408 {
2409 const char
2410 *end,
2411 *start;
2412
2413 (void) GetNextToken(q,&q,extent,token);
2414 if (*q == '"')
2415 {
2416 char
2417 name[MagickPathExtent];
2418
2419 const char
2420 *p;
2421
2422 ssize_t
2423 n;
2424
2425 /*
2426 Named macro (e.g. push graphic-context "wheel").
2427 */
2428 (void) GetNextToken(q,&q,extent,token);
2429 start=q;
2430 end=q;
2431 (void) CopyMagickString(name,token,MagickPathExtent);
2432 n=1;
2433 for (p=q; *p != '\0'; )
2434 {
2435 if (GetNextToken(p,&p,extent,token) < 1)
2436 break;
2437 if (*token == '\0')
2438 break;
2439 if (LocaleCompare(token,"pop") == 0)
2440 {
2441 end=p-strlen(token)-1;
2442 n--;
2443 }
2444 if (LocaleCompare(token,"push") == 0)
2445 n++;
2446 if ((n == 0) && (end >= start))
2447 {
2448 size_t
2449 length=(size_t) (end-start);
2450
2451 /*
2452 Extract macro.
2453 */
2454 (void) GetNextToken(p,&p,extent,token);
2455 if (length > 0)
2456 {
2457 (void) CopyMagickString(macro,start,length);
2458 (void) AddValueToSplayTree(macros,ConstantString(name),
2459 ConstantString(macro));
2460 }
2461 break;
2462 }
2463 }
2464 }
2465 }
2466 }
2467 token=DestroyString(token);
2468 macro=DestroyString(macro);
2469 return(macros);
2470}
2471
2472static inline MagickBooleanType IsPoint(const char *point)
2473{
2474 char
2475 *p;
2476
2477 double
2478 value;
2479
2480 value=GetDrawValue(point,&p);
2481 return((fabs(value) < MagickEpsilon) && (p == point) ? MagickFalse :
2482 MagickTrue);
2483}
2484
2485static inline MagickBooleanType TracePoint(PrimitiveInfo *primitive_info,
2486 const PointInfo point)
2487{
2488 primitive_info->coordinates=1;
2489 primitive_info->closed_subpath=MagickFalse;
2490 primitive_info->point=point;
2491 return(MagickTrue);
2492}
2493
2494static MagickBooleanType RenderMVGContent(Image *image,
2495 const DrawInfo *draw_info,const size_t depth,ExceptionInfo *exception)
2496{
2497#define RenderImageTag "Render/Image"
2498
2499 AffineMatrix
2500 affine,
2501 current;
2502
2503 char
2504 keyword[MagickPathExtent],
2505 geometry[MagickPathExtent],
2506 *next_token,
2507 pattern[MagickPathExtent],
2508 *primitive,
2509 *token;
2510
2511 const char
2512 *p,
2513 *q;
2514
2515 double
2516 angle,
2517 coordinates,
2518 cursor,
2519 factor,
2520 primitive_extent;
2521
2522 DrawInfo
2523 *clone_info,
2524 **graphic_context;
2525
2526 MagickBooleanType
2527 proceed;
2528
2529 MagickStatusType
2530 status;
2531
2532 MVGInfo
2533 mvg_info;
2534
2535 PointInfo
2536 point;
2537
2538 PrimitiveInfo
2539 *primitive_info;
2540
2541 PrimitiveType
2542 primitive_type;
2543
2544 SegmentInfo
2545 bounds;
2546
2547 size_t
2548 extent,
2549 number_points,
2550 number_stops;
2551
2552 SplayTreeInfo
2553 *macros;
2554
2555 ssize_t
2556 defsDepth,
2557 i,
2558 j,
2559 k,
2560 n,
2561 symbolDepth,
2562 x;
2563
2564 StopInfo
2565 *stops;
2566
2567 TypeMetric
2568 metrics;
2569
2570 assert(image != (Image *) NULL);
2571 assert(image->signature == MagickCoreSignature);
2572 assert(draw_info != (DrawInfo *) NULL);
2573 assert(draw_info->signature == MagickCoreSignature);
2574 if (IsEventLogging() != MagickFalse)
2575 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2576 if (depth > MagickMaxRecursionDepth)
2577 ThrowBinaryException(DrawError,"VectorGraphicsNestedTooDeeply",
2578 image->filename);
2579 if ((draw_info->primitive == (char *) NULL) ||
2580 (*draw_info->primitive == '\0'))
2581 return(MagickFalse);
2582 if (draw_info->debug != MagickFalse)
2583 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"begin draw-image");
2584 if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
2585 return(MagickFalse);
2586 if ((image->alpha_trait & BlendPixelTrait) == 0)
2587 {
2588 status=SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
2589 if (status == MagickFalse)
2590 return(MagickFalse);
2591 }
2592 if ((*draw_info->primitive == '@') && (strlen(draw_info->primitive) > 1) &&
2593 (*(draw_info->primitive+1) != '-') && (depth == 0))
2594 primitive=FileToString(draw_info->primitive,~0UL,exception);
2595 else
2596 primitive=AcquireString(draw_info->primitive);
2597 if (primitive == (char *) NULL)
2598 return(MagickFalse);
2599 primitive_extent=(double) strlen(primitive);
2600 (void) SetImageArtifact(image,"mvg:vector-graphics",primitive);
2601 n=0;
2602 number_stops=0;
2603 stops=(StopInfo *) NULL;
2604 /*
2605 Allocate primitive info memory.
2606 */
2607 graphic_context=(DrawInfo **) AcquireMagickMemory(sizeof(*graphic_context));
2608 if (graphic_context == (DrawInfo **) NULL)
2609 {
2610 primitive=DestroyString(primitive);
2611 ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed",
2612 image->filename);
2613 }
2614 number_points=(size_t) PrimitiveExtentPad;
2615 primitive_info=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
2616 (number_points+1),sizeof(*primitive_info));
2617 if (primitive_info == (PrimitiveInfo *) NULL)
2618 {
2619 primitive=DestroyString(primitive);
2620 for ( ; n >= 0; n--)
2621 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
2622 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
2623 ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed",
2624 image->filename);
2625 }
2626 (void) memset(primitive_info,0,(size_t) (number_points+1)*
2627 sizeof(*primitive_info));
2628 (void) memset(&mvg_info,0,sizeof(mvg_info));
2629 mvg_info.primitive_info=(&primitive_info);
2630 mvg_info.extent=(&number_points);
2631 mvg_info.exception=exception;
2632 graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,draw_info);
2633 graphic_context[n]->viewbox=image->page;
2634 if ((image->page.width == 0) || (image->page.height == 0))
2635 {
2636 graphic_context[n]->viewbox.width=image->columns;
2637 graphic_context[n]->viewbox.height=image->rows;
2638 }
2639 token=AcquireString(primitive);
2640 extent=strlen(token)+MagickPathExtent;
2641 defsDepth=0;
2642 symbolDepth=0;
2643 cursor=0.0;
2644 macros=GetMVGMacros(primitive);
2645 status=MagickTrue;
2646 for (q=primitive; *q != '\0'; )
2647 {
2648 /*
2649 Interpret graphic primitive.
2650 */
2651 if (GetNextToken(q,&q,MagickPathExtent,keyword) < 1)
2652 break;
2653 if (*keyword == '\0')
2654 break;
2655 if (*keyword == '#')
2656 {
2657 /*
2658 Comment.
2659 */
2660 while ((*q != '\n') && (*q != '\0'))
2661 q++;
2662 continue;
2663 }
2664 p=q-strlen(keyword)-1;
2665 primitive_type=UndefinedPrimitive;
2666 current=graphic_context[n]->affine;
2667 GetAffineMatrix(&affine);
2668 *token='\0';
2669 switch (*keyword)
2670 {
2671 case ';':
2672 break;
2673 case 'a':
2674 case 'A':
2675 {
2676 if (LocaleCompare("affine",keyword) == 0)
2677 {
2678 (void) GetNextToken(q,&q,extent,token);
2679 affine.sx=GetDrawValue(token,&next_token);
2680 if (token == next_token)
2681 ThrowPointExpectedException(token,exception);
2682 (void) GetNextToken(q,&q,extent,token);
2683 if (*token == ',')
2684 (void) GetNextToken(q,&q,extent,token);
2685 affine.ry=GetDrawValue(token,&next_token);
2686 if (token == next_token)
2687 ThrowPointExpectedException(token,exception);
2688 (void) GetNextToken(q,&q,extent,token);
2689 if (*token == ',')
2690 (void) GetNextToken(q,&q,extent,token);
2691 affine.rx=GetDrawValue(token,&next_token);
2692 if (token == next_token)
2693 ThrowPointExpectedException(token,exception);
2694 (void) GetNextToken(q,&q,extent,token);
2695 if (*token == ',')
2696 (void) GetNextToken(q,&q,extent,token);
2697 affine.sy=GetDrawValue(token,&next_token);
2698 if (token == next_token)
2699 ThrowPointExpectedException(token,exception);
2700 (void) GetNextToken(q,&q,extent,token);
2701 if (*token == ',')
2702 (void) GetNextToken(q,&q,extent,token);
2703 affine.tx=GetDrawValue(token,&next_token);
2704 if (token == next_token)
2705 ThrowPointExpectedException(token,exception);
2706 (void) GetNextToken(q,&q,extent,token);
2707 if (*token == ',')
2708 (void) GetNextToken(q,&q,extent,token);
2709 affine.ty=GetDrawValue(token,&next_token);
2710 if (token == next_token)
2711 ThrowPointExpectedException(token,exception);
2712 break;
2713 }
2714 if (LocaleCompare("alpha",keyword) == 0)
2715 {
2716 primitive_type=AlphaPrimitive;
2717 break;
2718 }
2719 if (LocaleCompare("arc",keyword) == 0)
2720 {
2721 primitive_type=ArcPrimitive;
2722 break;
2723 }
2724 status=MagickFalse;
2725 break;
2726 }
2727 case 'b':
2728 case 'B':
2729 {
2730 if (LocaleCompare("bezier",keyword) == 0)
2731 {
2732 primitive_type=BezierPrimitive;
2733 break;
2734 }
2735 if (LocaleCompare("border-color",keyword) == 0)
2736 {
2737 (void) GetNextToken(q,&q,extent,token);
2738 status&=(MagickStatusType) QueryColorCompliance(token,AllCompliance,
2739 &graphic_context[n]->border_color,exception);
2740 break;
2741 }
2742 status=MagickFalse;
2743 break;
2744 }
2745 case 'c':
2746 case 'C':
2747 {
2748 if (LocaleCompare("class",keyword) == 0)
2749 {
2750 const char
2751 *mvg_class;
2752
2753 (void) GetNextToken(q,&q,extent,token);
2754 if ((*token == '\0') || (*token == ';'))
2755 {
2756 status=MagickFalse;
2757 break;
2758 }
2759 /*
2760 Identify recursion.
2761 */
2762 for (i=0; i <= n; i++)
2763 if (LocaleCompare(token,graphic_context[i]->id) == 0)
2764 break;
2765 if (i <= n)
2766 break;
2767 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2768 if ((graphic_context[n]->render != MagickFalse) &&
2769 (mvg_class != (const char *) NULL) && (p > primitive))
2770 {
2771 char
2772 *elements;
2773
2774 ssize_t
2775 offset;
2776
2777 /*
2778 Inject class elements in stream.
2779 */
2780 (void) CloneString(&graphic_context[n]->id,token);
2781 offset=(ssize_t) (p-primitive);
2782 elements=AcquireString(primitive);
2783 elements[offset]='\0';
2784 (void) ConcatenateString(&elements,mvg_class);
2785 (void) ConcatenateString(&elements,"\n");
2786 (void) ConcatenateString(&elements,q);
2787 primitive=DestroyString(primitive);
2788 primitive=elements;
2789 q=primitive+offset;
2790 }
2791 break;
2792 }
2793 if (LocaleCompare("clip-path",keyword) == 0)
2794 {
2795 const char
2796 *clip_path;
2797
2798 /*
2799 Take a node from within the MVG document, and duplicate it here.
2800 */
2801 (void) GetNextToken(q,&q,extent,token);
2802 if (*token == '\0')
2803 {
2804 status=MagickFalse;
2805 break;
2806 }
2807 (void) CloneString(&graphic_context[n]->clip_mask,token);
2808 clip_path=(const char *) GetValueFromSplayTree(macros,token);
2809 if (clip_path != (const char *) NULL)
2810 {
2811 if (graphic_context[n]->clipping_mask != (Image *) NULL)
2812 graphic_context[n]->clipping_mask=
2813 DestroyImage(graphic_context[n]->clipping_mask);
2814 graphic_context[n]->clipping_mask=DrawClippingMask(image,
2815 graphic_context[n],token,clip_path,exception);
2816 if (graphic_context[n]->compliance != SVGCompliance)
2817 {
2818 clip_path=(const char *) GetValueFromSplayTree(macros,
2819 graphic_context[n]->clip_mask);
2820 if (clip_path != (const char *) NULL)
2821 (void) SetImageArtifact(image,
2822 graphic_context[n]->clip_mask,clip_path);
2823 status&=(MagickStatusType) DrawClipPath(image,
2824 graphic_context[n],graphic_context[n]->clip_mask,
2825 exception);
2826 }
2827 }
2828 break;
2829 }
2830 if (LocaleCompare("clip-rule",keyword) == 0)
2831 {
2832 ssize_t
2833 fill_rule;
2834
2835 (void) GetNextToken(q,&q,extent,token);
2836 fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2837 token);
2838 if (fill_rule == -1)
2839 {
2840 status=MagickFalse;
2841 break;
2842 }
2843 graphic_context[n]->fill_rule=(FillRule) fill_rule;
2844 break;
2845 }
2846 if (LocaleCompare("clip-units",keyword) == 0)
2847 {
2848 ssize_t
2849 clip_units;
2850
2851 (void) GetNextToken(q,&q,extent,token);
2852 clip_units=ParseCommandOption(MagickClipPathOptions,MagickFalse,
2853 token);
2854 if (clip_units == -1)
2855 {
2856 status=MagickFalse;
2857 break;
2858 }
2859 graphic_context[n]->clip_units=(ClipPathUnits) clip_units;
2860 if (clip_units == ObjectBoundingBox)
2861 {
2862 GetAffineMatrix(&current);
2863 affine.sx=draw_info->bounds.x2;
2864 affine.sy=draw_info->bounds.y2;
2865 affine.tx=draw_info->bounds.x1;
2866 affine.ty=draw_info->bounds.y1;
2867 break;
2868 }
2869 break;
2870 }
2871 if (LocaleCompare("circle",keyword) == 0)
2872 {
2873 primitive_type=CirclePrimitive;
2874 break;
2875 }
2876 if (LocaleCompare("color",keyword) == 0)
2877 {
2878 primitive_type=ColorPrimitive;
2879 break;
2880 }
2881 if (LocaleCompare("compliance",keyword) == 0)
2882 {
2883 /*
2884 MVG compliance associates a clipping mask with an image; SVG
2885 compliance associates a clipping mask with a graphics context.
2886 */
2887 (void) GetNextToken(q,&q,extent,token);
2888 graphic_context[n]->compliance=(ComplianceType) ParseCommandOption(
2889 MagickComplianceOptions,MagickFalse,token);
2890 break;
2891 }
2892 if (LocaleCompare("currentColor",keyword) == 0)
2893 {
2894 (void) GetNextToken(q,&q,extent,token);
2895 break;
2896 }
2897 status=MagickFalse;
2898 break;
2899 }
2900 case 'd':
2901 case 'D':
2902 {
2903 if (LocaleCompare("decorate",keyword) == 0)
2904 {
2905 ssize_t
2906 decorate;
2907
2908 (void) GetNextToken(q,&q,extent,token);
2909 decorate=ParseCommandOption(MagickDecorateOptions,MagickFalse,
2910 token);
2911 if (decorate == -1)
2912 {
2913 status=MagickFalse;
2914 break;
2915 }
2916 graphic_context[n]->decorate=(DecorationType) decorate;
2917 break;
2918 }
2919 if (LocaleCompare("density",keyword) == 0)
2920 {
2921 (void) GetNextToken(q,&q,extent,token);
2922 (void) CloneString(&graphic_context[n]->density,token);
2923 break;
2924 }
2925 if (LocaleCompare("direction",keyword) == 0)
2926 {
2927 ssize_t
2928 direction;
2929
2930 (void) GetNextToken(q,&q,extent,token);
2931 direction=ParseCommandOption(MagickDirectionOptions,MagickFalse,
2932 token);
2933 if (direction == -1)
2934 status=MagickFalse;
2935 else
2936 graphic_context[n]->direction=(DirectionType) direction;
2937 break;
2938 }
2939 status=MagickFalse;
2940 break;
2941 }
2942 case 'e':
2943 case 'E':
2944 {
2945 if (LocaleCompare("ellipse",keyword) == 0)
2946 {
2947 primitive_type=EllipsePrimitive;
2948 break;
2949 }
2950 if (LocaleCompare("encoding",keyword) == 0)
2951 {
2952 (void) GetNextToken(q,&q,extent,token);
2953 (void) CloneString(&graphic_context[n]->encoding,token);
2954 break;
2955 }
2956 status=MagickFalse;
2957 break;
2958 }
2959 case 'f':
2960 case 'F':
2961 {
2962 if (LocaleCompare("fill",keyword) == 0)
2963 {
2964 const char
2965 *mvg_class;
2966
2967 (void) GetNextToken(q,&q,extent,token);
2968 if (graphic_context[n]->clip_path != MagickFalse)
2969 break;
2970 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2971 if (mvg_class != (const char *) NULL)
2972 {
2973 (void) DrawPatternPath(image,draw_info,mvg_class,
2974 &graphic_context[n]->fill_pattern,exception);
2975 break;
2976 }
2977 (void) FormatLocaleString(pattern,MagickPathExtent,"%s",token);
2978 if (GetImageArtifact(image,pattern) != (const char *) NULL)
2979 {
2980 (void) DrawPatternPath(image,draw_info,token,
2981 &graphic_context[n]->fill_pattern,exception);
2982 break;
2983 }
2984 status&=(MagickStatusType) QueryColorCompliance(token,AllCompliance,
2985 &graphic_context[n]->fill,exception);
2986 if (graphic_context[n]->fill_alpha != (double) OpaqueAlpha)
2987 graphic_context[n]->fill.alpha=graphic_context[n]->fill_alpha;
2988 break;
2989 }
2990 if (LocaleCompare("fill-opacity",keyword) == 0)
2991 {
2992 double
2993 opacity;
2994
2995 (void) GetNextToken(q,&q,extent,token);
2996 if (graphic_context[n]->clip_path != MagickFalse)
2997 break;
2998 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
2999 opacity=MagickMin(MagickMax(factor*
3000 GetDrawValue(token,&next_token),0.0),1.0);
3001 if (token == next_token)
3002 ThrowPointExpectedException(token,exception);
3003 if (graphic_context[n]->compliance == SVGCompliance)
3004 graphic_context[n]->fill_alpha*=opacity;
3005 else
3006 graphic_context[n]->fill_alpha=(double) QuantumRange*opacity;
3007 if (graphic_context[n]->fill.alpha != (double) TransparentAlpha)
3008 graphic_context[n]->fill.alpha=graphic_context[n]->fill_alpha;
3009 else
3010 graphic_context[n]->fill.alpha=(MagickRealType)
3011 ClampToQuantum((double) QuantumRange*opacity);
3012 graphic_context[n]->fill.alpha_trait=BlendPixelTrait;
3013 break;
3014 }
3015 if (LocaleCompare("fill-rule",keyword) == 0)
3016 {
3017 ssize_t
3018 fill_rule;
3019
3020 (void) GetNextToken(q,&q,extent,token);
3021 fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
3022 token);
3023 if (fill_rule == -1)
3024 {
3025 status=MagickFalse;
3026 break;
3027 }
3028 graphic_context[n]->fill_rule=(FillRule) fill_rule;
3029 break;
3030 }
3031 if (LocaleCompare("font",keyword) == 0)
3032 {
3033 (void) GetNextToken(q,&q,extent,token);
3034 (void) CloneString(&graphic_context[n]->font,token);
3035 if (LocaleCompare("none",token) == 0)
3036 graphic_context[n]->font=(char *) RelinquishMagickMemory(
3037 graphic_context[n]->font);
3038 break;
3039 }
3040 if (LocaleCompare("font-family",keyword) == 0)
3041 {
3042 (void) GetNextToken(q,&q,extent,token);
3043 (void) CloneString(&graphic_context[n]->family,token);
3044 break;
3045 }
3046 if (LocaleCompare("font-size",keyword) == 0)
3047 {
3048 (void) GetNextToken(q,&q,extent,token);
3049 graphic_context[n]->pointsize=GetDrawValue(token,&next_token);
3050 if (token == next_token)
3051 ThrowPointExpectedException(token,exception);
3052 break;
3053 }
3054 if (LocaleCompare("font-stretch",keyword) == 0)
3055 {
3056 ssize_t
3057 stretch;
3058
3059 (void) GetNextToken(q,&q,extent,token);
3060 stretch=ParseCommandOption(MagickStretchOptions,MagickFalse,token);
3061 if (stretch == -1)
3062 {
3063 status=MagickFalse;
3064 break;
3065 }
3066 graphic_context[n]->stretch=(StretchType) stretch;
3067 break;
3068 }
3069 if (LocaleCompare("font-style",keyword) == 0)
3070 {
3071 ssize_t
3072 style;
3073
3074 (void) GetNextToken(q,&q,extent,token);
3075 style=ParseCommandOption(MagickStyleOptions,MagickFalse,token);
3076 if (style == -1)
3077 {
3078 status=MagickFalse;
3079 break;
3080 }
3081 graphic_context[n]->style=(StyleType) style;
3082 break;
3083 }
3084 if (LocaleCompare("font-weight",keyword) == 0)
3085 {
3086 ssize_t
3087 weight;
3088
3089 (void) GetNextToken(q,&q,extent,token);
3090 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,token);
3091 if (weight == -1)
3092 weight=(ssize_t) StringToUnsignedLong(token);
3093 graphic_context[n]->weight=(size_t) weight;
3094 break;
3095 }
3096 status=MagickFalse;
3097 break;
3098 }
3099 case 'g':
3100 case 'G':
3101 {
3102 if (LocaleCompare("gradient-units",keyword) == 0)
3103 {
3104 (void) GetNextToken(q,&q,extent,token);
3105 break;
3106 }
3107 if (LocaleCompare("gravity",keyword) == 0)
3108 {
3109 ssize_t
3110 gravity;
3111
3112 (void) GetNextToken(q,&q,extent,token);
3113 gravity=ParseCommandOption(MagickGravityOptions,MagickFalse,token);
3114 if (gravity == -1)
3115 {
3116 status=MagickFalse;
3117 break;
3118 }
3119 graphic_context[n]->gravity=(GravityType) gravity;
3120 break;
3121 }
3122 status=MagickFalse;
3123 break;
3124 }
3125 case 'i':
3126 case 'I':
3127 {
3128 if (LocaleCompare("image",keyword) == 0)
3129 {
3130 ssize_t
3131 compose;
3132
3133 primitive_type=ImagePrimitive;
3134 (void) GetNextToken(q,&q,extent,token);
3135 compose=ParseCommandOption(MagickComposeOptions,MagickFalse,token);
3136 if (compose == -1)
3137 {
3138 status=MagickFalse;
3139 break;
3140 }
3141 graphic_context[n]->compose=(CompositeOperator) compose;
3142 break;
3143 }
3144 if (LocaleCompare("interline-spacing",keyword) == 0)
3145 {
3146 (void) GetNextToken(q,&q,extent,token);
3147 graphic_context[n]->interline_spacing=GetDrawValue(token,
3148 &next_token);
3149 if (token == next_token)
3150 ThrowPointExpectedException(token,exception);
3151 break;
3152 }
3153 if (LocaleCompare("interword-spacing",keyword) == 0)
3154 {
3155 (void) GetNextToken(q,&q,extent,token);
3156 graphic_context[n]->interword_spacing=GetDrawValue(token,
3157 &next_token);
3158 if (token == next_token)
3159 ThrowPointExpectedException(token,exception);
3160 break;
3161 }
3162 status=MagickFalse;
3163 break;
3164 }
3165 case 'k':
3166 case 'K':
3167 {
3168 if (LocaleCompare("kerning",keyword) == 0)
3169 {
3170 (void) GetNextToken(q,&q,extent,token);
3171 graphic_context[n]->kerning=GetDrawValue(token,&next_token);
3172 if (token == next_token)
3173 ThrowPointExpectedException(token,exception);
3174 break;
3175 }
3176 status=MagickFalse;
3177 break;
3178 }
3179 case 'l':
3180 case 'L':
3181 {
3182 if (LocaleCompare("letter-spacing",keyword) == 0)
3183 {
3184 (void) GetNextToken(q,&q,extent,token);
3185 if (IsPoint(token) == MagickFalse)
3186 break;
3187 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3188 clone_info->text=AcquireString(" ");
3189 status&=(MagickStatusType) GetTypeMetrics(image,clone_info,&metrics,
3190 exception);
3191 graphic_context[n]->kerning=metrics.width*
3192 GetDrawValue(token,&next_token);
3193 clone_info=DestroyDrawInfo(clone_info);
3194 if (token == next_token)
3195 ThrowPointExpectedException(token,exception);
3196 break;
3197 }
3198 if (LocaleCompare("line",keyword) == 0)
3199 {
3200 primitive_type=LinePrimitive;
3201 break;
3202 }
3203 status=MagickFalse;
3204 break;
3205 }
3206 case 'm':
3207 case 'M':
3208 {
3209 if (LocaleCompare("mask",keyword) == 0)
3210 {
3211 const char
3212 *mask_path;
3213
3214 /*
3215 Take a node from within the MVG document, and duplicate it here.
3216 */
3217 (void) GetNextToken(q,&q,extent,token);
3218 mask_path=(const char *) GetValueFromSplayTree(macros,token);
3219 if (mask_path != (const char *) NULL)
3220 {
3221 if (graphic_context[n]->composite_mask != (Image *) NULL)
3222 graphic_context[n]->composite_mask=
3223 DestroyImage(graphic_context[n]->composite_mask);
3224 graphic_context[n]->composite_mask=DrawCompositeMask(image,
3225 graphic_context[n],token,mask_path,exception);
3226 if (graphic_context[n]->compliance != SVGCompliance)
3227 status=SetImageMask(image,CompositePixelMask,
3228 graphic_context[n]->composite_mask,exception);
3229 }
3230 break;
3231 }
3232 status=MagickFalse;
3233 break;
3234 }
3235 case 'o':
3236 case 'O':
3237 {
3238 if (LocaleCompare("offset",keyword) == 0)
3239 {
3240 (void) GetNextToken(q,&q,extent,token);
3241 break;
3242 }
3243 if (LocaleCompare("opacity",keyword) == 0)
3244 {
3245 double
3246 opacity;
3247
3248 (void) GetNextToken(q,&q,extent,token);
3249 if (graphic_context[n]->clip_path != MagickFalse)
3250 break;
3251 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3252 opacity=MagickMin(MagickMax(factor*
3253 GetDrawValue(token,&next_token),0.0),1.0);
3254 if (token == next_token)
3255 ThrowPointExpectedException(token,exception);
3256 if (graphic_context[n]->compliance == SVGCompliance)
3257 {
3258 graphic_context[n]->fill_alpha*=opacity;
3259 graphic_context[n]->stroke_alpha*=opacity;
3260 }
3261 else
3262 {
3263 graphic_context[n]->fill_alpha=(double) QuantumRange*opacity;
3264 graphic_context[n]->stroke_alpha=(double) QuantumRange*opacity;
3265 }
3266 if (graphic_context[n]->fill.alpha != (double) TransparentAlpha)
3267 {
3268 graphic_context[n]->fill.alpha=graphic_context[n]->fill_alpha;
3269 graphic_context[n]->stroke.alpha=graphic_context[n]->stroke_alpha;
3270 }
3271 else
3272 {
3273 graphic_context[n]->fill.alpha=(MagickRealType)
3274 ClampToQuantum((double) QuantumRange*opacity);
3275 graphic_context[n]->stroke.alpha=(MagickRealType)
3276 ClampToQuantum((double) QuantumRange*opacity);
3277 }
3278 graphic_context[n]->fill.alpha_trait=BlendPixelTrait;
3279 graphic_context[n]->stroke.alpha_trait=BlendPixelTrait;
3280 break;
3281 }
3282 status=MagickFalse;
3283 break;
3284 }
3285 case 'p':
3286 case 'P':
3287 {
3288 if (LocaleCompare("path",keyword) == 0)
3289 {
3290 primitive_type=PathPrimitive;
3291 break;
3292 }
3293 if (LocaleCompare("point",keyword) == 0)
3294 {
3295 primitive_type=PointPrimitive;
3296 break;
3297 }
3298 if (LocaleCompare("polyline",keyword) == 0)
3299 {
3300 primitive_type=PolylinePrimitive;
3301 break;
3302 }
3303 if (LocaleCompare("polygon",keyword) == 0)
3304 {
3305 primitive_type=PolygonPrimitive;
3306 break;
3307 }
3308 if (LocaleCompare("pop",keyword) == 0)
3309 {
3310 if (GetNextToken(q,&q,extent,token) < 1)
3311 break;
3312 if (LocaleCompare("class",token) == 0)
3313 break;
3314 if (LocaleCompare("clip-path",token) == 0)
3315 break;
3316 if (LocaleCompare("defs",token) == 0)
3317 {
3318 defsDepth--;
3319 graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3320 MagickTrue;
3321 break;
3322 }
3323 if (LocaleCompare("gradient",token) == 0)
3324 break;
3325 if (LocaleCompare("graphic-context",token) == 0)
3326 {
3327 if (n <= 0)
3328 {
3329 (void) ThrowMagickException(exception,GetMagickModule(),
3330 DrawError,"UnbalancedGraphicContextPushPop","`%s'",token);
3331 status=MagickFalse;
3332 n=0;
3333 break;
3334 }
3335 if ((graphic_context[n]->clip_mask != (char *) NULL) &&
3336 (graphic_context[n]->compliance != SVGCompliance))
3337 if (LocaleCompare(graphic_context[n]->clip_mask,
3338 graphic_context[n-1]->clip_mask) != 0)
3339 status=SetImageMask(image,WritePixelMask,(Image *) NULL,
3340 exception);
3341 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
3342 n--;
3343 break;
3344 }
3345 if (LocaleCompare("mask",token) == 0)
3346 break;
3347 if (LocaleCompare("pattern",token) == 0)
3348 break;
3349 if (LocaleCompare("symbol",token) == 0)
3350 {
3351 symbolDepth--;
3352 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3353 MagickTrue;
3354 break;
3355 }
3356 status=MagickFalse;
3357 break;
3358 }
3359 if (LocaleCompare("push",keyword) == 0)
3360 {
3361 if (GetNextToken(q,&q,extent,token) < 1)
3362 break;
3363 if (LocaleCompare("class",token) == 0)
3364 {
3365 /*
3366 Class context.
3367 */
3368 for (p=q; *q != '\0'; )
3369 {
3370 if (GetNextToken(q,&q,extent,token) < 1)
3371 break;
3372 if (LocaleCompare(token,"pop") != 0)
3373 continue;
3374 (void) GetNextToken(q,(const char **) NULL,extent,token);
3375 if (LocaleCompare(token,"class") != 0)
3376 continue;
3377 break;
3378 }
3379 (void) GetNextToken(q,&q,extent,token);
3380 break;
3381 }
3382 if (LocaleCompare("clip-path",token) == 0)
3383 {
3384 (void) GetNextToken(q,&q,extent,token);
3385 for (p=q; *q != '\0'; )
3386 {
3387 if (GetNextToken(q,&q,extent,token) < 1)
3388 break;
3389 if (LocaleCompare(token,"pop") != 0)
3390 continue;
3391 (void) GetNextToken(q,(const char **) NULL,extent,token);
3392 if (LocaleCompare(token,"clip-path") != 0)
3393 continue;
3394 break;
3395 }
3396 if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3397 {
3398 status=MagickFalse;
3399 break;
3400 }
3401 (void) GetNextToken(q,&q,extent,token);
3402 break;
3403 }
3404 if (LocaleCompare("defs",token) == 0)
3405 {
3406 defsDepth++;
3407 graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3408 MagickTrue;
3409 break;
3410 }
3411 if (LocaleCompare("gradient",token) == 0)
3412 {
3413 char
3414 key[2*MagickPathExtent],
3415 name[MagickPathExtent],
3416 type[MagickPathExtent];
3417
3418 SegmentInfo
3419 segment;
3420
3421 (void) GetNextToken(q,&q,extent,token);
3422 (void) CopyMagickString(name,token,MagickPathExtent);
3423 (void) GetNextToken(q,&q,extent,token);
3424 (void) CopyMagickString(type,token,MagickPathExtent);
3425 (void) GetNextToken(q,&q,extent,token);
3426 segment.x1=GetDrawValue(token,&next_token);
3427 if (token == next_token)
3428 ThrowPointExpectedException(token,exception);
3429 (void) GetNextToken(q,&q,extent,token);
3430 if (*token == ',')
3431 (void) GetNextToken(q,&q,extent,token);
3432 segment.y1=GetDrawValue(token,&next_token);
3433 if (token == next_token)
3434 ThrowPointExpectedException(token,exception);
3435 (void) GetNextToken(q,&q,extent,token);
3436 if (*token == ',')
3437 (void) GetNextToken(q,&q,extent,token);
3438 segment.x2=GetDrawValue(token,&next_token);
3439 if (token == next_token)
3440 ThrowPointExpectedException(token,exception);
3441 (void) GetNextToken(q,&q,extent,token);
3442 if (*token == ',')
3443 (void) GetNextToken(q,&q,extent,token);
3444 segment.y2=GetDrawValue(token,&next_token);
3445 if (token == next_token)
3446 ThrowPointExpectedException(token,exception);
3447 if (LocaleCompare(type,"radial") == 0)
3448 {
3449 (void) GetNextToken(q,&q,extent,token);
3450 if (*token == ',')
3451 (void) GetNextToken(q,&q,extent,token);
3452 }
3453 for (p=q; *q != '\0'; )
3454 {
3455 if (GetNextToken(q,&q,extent,token) < 1)
3456 break;
3457 if (LocaleCompare(token,"pop") != 0)
3458 continue;
3459 (void) GetNextToken(q,(const char **) NULL,extent,token);
3460 if (LocaleCompare(token,"gradient") != 0)
3461 continue;
3462 break;
3463 }
3464 if ((q == (char *) NULL) || (*q == '\0') ||
3465 (p == (char *) NULL) || ((q-4) < p))
3466 {
3467 status=MagickFalse;
3468 break;
3469 }
3470 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3471 bounds.x1=graphic_context[n]->affine.sx*segment.x1+
3472 graphic_context[n]->affine.ry*segment.y1+
3473 graphic_context[n]->affine.tx;
3474 bounds.y1=graphic_context[n]->affine.rx*segment.x1+
3475 graphic_context[n]->affine.sy*segment.y1+
3476 graphic_context[n]->affine.ty;
3477 bounds.x2=graphic_context[n]->affine.sx*segment.x2+
3478 graphic_context[n]->affine.ry*segment.y2+
3479 graphic_context[n]->affine.tx;
3480 bounds.y2=graphic_context[n]->affine.rx*segment.x2+
3481 graphic_context[n]->affine.sy*segment.y2+
3482 graphic_context[n]->affine.ty;
3483 (void) FormatLocaleString(key,MagickPathExtent,"%s",name);
3484 (void) SetImageArtifact(image,key,token);
3485 (void) FormatLocaleString(key,MagickPathExtent,"%s-type",name);
3486 (void) SetImageArtifact(image,key,type);
3487 (void) FormatLocaleString(key,MagickPathExtent,"%s-geometry",
3488 name);
3489 (void) FormatLocaleString(geometry,MagickPathExtent,
3490 "%gx%g%+.15g%+.15g",
3491 MagickMax(fabs(bounds.x2-bounds.x1+1.0),1.0),
3492 MagickMax(fabs(bounds.y2-bounds.y1+1.0),1.0),
3493 bounds.x1,bounds.y1);
3494 (void) SetImageArtifact(image,key,geometry);
3495 (void) GetNextToken(q,&q,extent,token);
3496 break;
3497 }
3498 if (LocaleCompare("graphic-context",token) == 0)
3499 {
3500 n++;
3501 graphic_context=(DrawInfo **) ResizeQuantumMemory(
3502 graphic_context,(size_t) (n+1),sizeof(*graphic_context));
3503 if (graphic_context == (DrawInfo **) NULL)
3504 {
3505 (void) ThrowMagickException(exception,GetMagickModule(),
3506 ResourceLimitError,"MemoryAllocationFailed","`%s'",
3507 image->filename);
3508 break;
3509 }
3510 graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,
3511 graphic_context[n-1]);
3512 if (*q == '"')
3513 {
3514 (void) GetNextToken(q,&q,extent,token);
3515 (void) CloneString(&graphic_context[n]->id,token);
3516 }
3517 break;
3518 }
3519 if (LocaleCompare("mask",token) == 0)
3520 {
3521 (void) GetNextToken(q,&q,extent,token);
3522 break;
3523 }
3524 if (LocaleCompare("pattern",token) == 0)
3525 {
3526 char
3527 key[2*MagickPathExtent],
3528 name[MagickPathExtent];
3529
3530 RectangleInfo
3531 region;
3532
3533 (void) GetNextToken(q,&q,extent,token);
3534 (void) CopyMagickString(name,token,MagickPathExtent);
3535 (void) GetNextToken(q,&q,extent,token);
3536 region.x=CastDoubleToSsizeT(ceil(GetDrawValue(token,
3537 &next_token)-0.5));
3538 if (token == next_token)
3539 ThrowPointExpectedException(token,exception);
3540 (void) GetNextToken(q,&q,extent,token);
3541 if (*token == ',')
3542 (void) GetNextToken(q,&q,extent,token);
3543 region.y=CastDoubleToSsizeT(ceil(GetDrawValue(token,
3544 &next_token)-0.5));
3545 if (token == next_token)
3546 ThrowPointExpectedException(token,exception);
3547 (void) GetNextToken(q,&q,extent,token);
3548 if (*token == ',')
3549 (void) GetNextToken(q,&q,extent,token);
3550 region.width=CastDoubleToSizeT(floor(GetDrawValue(token,
3551 &next_token)+0.5));
3552 if (token == next_token)
3553 ThrowPointExpectedException(token,exception);
3554 (void) GetNextToken(q,&q,extent,token);
3555 if (*token == ',')
3556 (void) GetNextToken(q,&q,extent,token);
3557 region.height=CastDoubleToSizeT(GetDrawValue(token,
3558 &next_token)+0.5);
3559 if (token == next_token)
3560 ThrowPointExpectedException(token,exception);
3561 for (p=q; *q != '\0'; )
3562 {
3563 if (GetNextToken(q,&q,extent,token) < 1)
3564 break;
3565 if (LocaleCompare(token,"pop") != 0)
3566 continue;
3567 (void) GetNextToken(q,(const char **) NULL,extent,token);
3568 if (LocaleCompare(token,"pattern") != 0)
3569 continue;
3570 break;
3571 }
3572 if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3573 {
3574 status=MagickFalse;
3575 break;
3576 }
3577 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3578 (void) FormatLocaleString(key,MagickPathExtent,"%s",name);
3579 (void) SetImageArtifact(image,key,token);
3580 (void) FormatLocaleString(key,MagickPathExtent,"%s-geometry",
3581 name);
3582 (void) FormatLocaleString(geometry,MagickPathExtent,
3583 "%.20gx%.20g%+.20g%+.20g",(double) region.width,(double)
3584 region.height,(double) region.x,(double) region.y);
3585 (void) SetImageArtifact(image,key,geometry);
3586 (void) GetNextToken(q,&q,extent,token);
3587 break;
3588 }
3589 if (LocaleCompare("symbol",token) == 0)
3590 {
3591 symbolDepth++;
3592 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3593 MagickTrue;
3594 break;
3595 }
3596 status=MagickFalse;
3597 break;
3598 }
3599 status=MagickFalse;
3600 break;
3601 }
3602 case 'r':
3603 case 'R':
3604 {
3605 if (LocaleCompare("rectangle",keyword) == 0)
3606 {
3607 primitive_type=RectanglePrimitive;
3608 break;
3609 }
3610 if (LocaleCompare("rotate",keyword) == 0)
3611 {
3612 (void) GetNextToken(q,&q,extent,token);
3613 angle=GetDrawValue(token,&next_token);
3614 if (token == next_token)
3615 ThrowPointExpectedException(token,exception);
3616 affine.sx=cos(DegreesToRadians(fmod((double) angle,360.0)));
3617 affine.rx=sin(DegreesToRadians(fmod((double) angle,360.0)));
3618 affine.ry=(-sin(DegreesToRadians(fmod((double) angle,360.0))));
3619 affine.sy=cos(DegreesToRadians(fmod((double) angle,360.0)));
3620 break;
3621 }
3622 if (LocaleCompare("roundRectangle",keyword) == 0)
3623 {
3624 primitive_type=RoundRectanglePrimitive;
3625 break;
3626 }
3627 status=MagickFalse;
3628 break;
3629 }
3630 case 's':
3631 case 'S':
3632 {
3633 if (LocaleCompare("scale",keyword) == 0)
3634 {
3635 (void) GetNextToken(q,&q,extent,token);
3636 affine.sx=GetDrawValue(token,&next_token);
3637 if (token == next_token)
3638 ThrowPointExpectedException(token,exception);
3639 (void) GetNextToken(q,&q,extent,token);
3640 if (*token == ',')
3641 (void) GetNextToken(q,&q,extent,token);
3642 affine.sy=GetDrawValue(token,&next_token);
3643 if (token == next_token)
3644 ThrowPointExpectedException(token,exception);
3645 break;
3646 }
3647 if (LocaleCompare("skewX",keyword) == 0)
3648 {
3649 (void) GetNextToken(q,&q,extent,token);
3650 angle=GetDrawValue(token,&next_token);
3651 if (token == next_token)
3652 ThrowPointExpectedException(token,exception);
3653 affine.ry=sin(DegreesToRadians(angle));
3654 break;
3655 }
3656 if (LocaleCompare("skewY",keyword) == 0)
3657 {
3658 (void) GetNextToken(q,&q,extent,token);
3659 angle=GetDrawValue(token,&next_token);
3660 if (token == next_token)
3661 ThrowPointExpectedException(token,exception);
3662 affine.rx=(-tan(DegreesToRadians(angle)/2.0));
3663 break;
3664 }
3665 if (LocaleCompare("stop-color",keyword) == 0)
3666 {
3667 PixelInfo
3668 stop_color;
3669
3670 number_stops++;
3671 if (number_stops == 1)
3672 stops=(StopInfo *) AcquireQuantumMemory(2,sizeof(*stops));
3673 else
3674 if (number_stops > 2)
3675 stops=(StopInfo *) ResizeQuantumMemory(stops,number_stops,
3676 sizeof(*stops));
3677 if (stops == (StopInfo *) NULL)
3678 {
3679 (void) ThrowMagickException(exception,GetMagickModule(),
3680 ResourceLimitError,"MemoryAllocationFailed","`%s'",
3681 image->filename);
3682 break;
3683 }
3684 (void) GetNextToken(q,&q,extent,token);
3685 status&=(MagickStatusType) QueryColorCompliance(token,AllCompliance,
3686 &stop_color,exception);
3687 stops[number_stops-1].color=stop_color;
3688 (void) GetNextToken(q,&q,extent,token);
3689 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3690 stops[number_stops-1].offset=factor*GetDrawValue(token,
3691 &next_token);
3692 if (token == next_token)
3693 ThrowPointExpectedException(token,exception);
3694 break;
3695 }
3696 if (LocaleCompare("stroke",keyword) == 0)
3697 {
3698 const char
3699 *mvg_class;
3700
3701 (void) GetNextToken(q,&q,extent,token);
3702 if (graphic_context[n]->clip_path != MagickFalse)
3703 break;
3704 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
3705 if (mvg_class != (const char *) NULL)
3706 {
3707 (void) DrawPatternPath(image,draw_info,mvg_class,
3708 &graphic_context[n]->stroke_pattern,exception);
3709 break;
3710 }
3711 (void) FormatLocaleString(pattern,MagickPathExtent,"%s",token);
3712 if (GetImageArtifact(image,pattern) != (const char *) NULL)
3713 {
3714 (void) DrawPatternPath(image,draw_info,token,
3715 &graphic_context[n]->stroke_pattern,exception);
3716 break;
3717 }
3718 status&=(MagickStatusType) QueryColorCompliance(token,AllCompliance,
3719 &graphic_context[n]->stroke,exception);
3720 if (graphic_context[n]->stroke_alpha != (double) OpaqueAlpha)
3721 graphic_context[n]->stroke.alpha=
3722 graphic_context[n]->stroke_alpha;
3723 break;
3724 }
3725 if (LocaleCompare("stroke-antialias",keyword) == 0)
3726 {
3727 (void) GetNextToken(q,&q,extent,token);
3728 graphic_context[n]->stroke_antialias=StringToLong(token) != 0 ?
3729 MagickTrue : MagickFalse;
3730 break;
3731 }
3732 if (LocaleCompare("stroke-dasharray",keyword) == 0)
3733 {
3734 if (graphic_context[n]->dash_pattern != (double *) NULL)
3735 graphic_context[n]->dash_pattern=(double *)
3736 RelinquishMagickMemory(graphic_context[n]->dash_pattern);
3737 if (IsPoint(q) != MagickFalse)
3738 {
3739 const char
3740 *r;
3741
3742 r=q;
3743 (void) GetNextToken(r,&r,extent,token);
3744 if (*token == ',')
3745 (void) GetNextToken(r,&r,extent,token);
3746 for (x=0; IsPoint(token) != MagickFalse; x++)
3747 {
3748 (void) GetNextToken(r,&r,extent,token);
3749 if (*token == ',')
3750 (void) GetNextToken(r,&r,extent,token);
3751 }
3752 graphic_context[n]->dash_pattern=(double *)
3753 AcquireQuantumMemory((size_t) (2*x+2),
3754 sizeof(*graphic_context[n]->dash_pattern));
3755 if (graphic_context[n]->dash_pattern == (double *) NULL)
3756 {
3757 (void) ThrowMagickException(exception,GetMagickModule(),
3758 ResourceLimitError,"MemoryAllocationFailed","`%s'",
3759 image->filename);
3760 status=MagickFalse;
3761 break;
3762 }
3763 (void) memset(graphic_context[n]->dash_pattern,0,(size_t)
3764 (2*x+2)*sizeof(*graphic_context[n]->dash_pattern));
3765 for (j=0; j < x; j++)
3766 {
3767 (void) GetNextToken(q,&q,extent,token);
3768 if (*token == ',')
3769 (void) GetNextToken(q,&q,extent,token);
3770 graphic_context[n]->dash_pattern[j]=GetDrawValue(token,
3771 &next_token);
3772 if (token == next_token)
3773 ThrowPointExpectedException(token,exception);
3774 if (graphic_context[n]->dash_pattern[j] <= 0.0)
3775 status=MagickFalse;
3776 }
3777 if ((x & 0x01) != 0)
3778 for ( ; j < (2*x); j++)
3779 graphic_context[n]->dash_pattern[j]=
3780 graphic_context[n]->dash_pattern[j-x];
3781 graphic_context[n]->dash_pattern[j]=0.0;
3782 break;
3783 }
3784 (void) GetNextToken(q,&q,extent,token);
3785 break;
3786 }
3787 if (LocaleCompare("stroke-dashoffset",keyword) == 0)
3788 {
3789 (void) GetNextToken(q,&q,extent,token);
3790 graphic_context[n]->dash_offset=GetDrawValue(token,&next_token);
3791 if (token == next_token)
3792 ThrowPointExpectedException(token,exception);
3793 break;
3794 }
3795 if (LocaleCompare("stroke-linecap",keyword) == 0)
3796 {
3797 ssize_t
3798 linecap;
3799
3800 (void) GetNextToken(q,&q,extent,token);
3801 linecap=ParseCommandOption(MagickLineCapOptions,MagickFalse,token);
3802 if (linecap == -1)
3803 {
3804 status=MagickFalse;
3805 break;
3806 }
3807 graphic_context[n]->linecap=(LineCap) linecap;
3808 break;
3809 }
3810 if (LocaleCompare("stroke-linejoin",keyword) == 0)
3811 {
3812 ssize_t
3813 linejoin;
3814
3815 (void) GetNextToken(q,&q,extent,token);
3816 linejoin=ParseCommandOption(MagickLineJoinOptions,MagickFalse,
3817 token);
3818 if (linejoin == -1)
3819 {
3820 status=MagickFalse;
3821 break;
3822 }
3823 graphic_context[n]->linejoin=(LineJoin) linejoin;
3824 break;
3825 }
3826 if (LocaleCompare("stroke-miterlimit",keyword) == 0)
3827 {
3828 (void) GetNextToken(q,&q,extent,token);
3829 graphic_context[n]->miterlimit=StringToUnsignedLong(token);
3830 break;
3831 }
3832 if (LocaleCompare("stroke-opacity",keyword) == 0)
3833 {
3834 double
3835 opacity;
3836
3837 (void) GetNextToken(q,&q,extent,token);
3838 if (graphic_context[n]->clip_path != MagickFalse)
3839 break;
3840 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3841 opacity=MagickMin(MagickMax(factor*GetDrawValue(token,&next_token),
3842 0.0),1.0);
3843 if (token == next_token)
3844 ThrowPointExpectedException(token,exception);
3845 if (graphic_context[n]->compliance == SVGCompliance)
3846 graphic_context[n]->stroke_alpha*=opacity;
3847 else
3848 graphic_context[n]->stroke_alpha=(double) QuantumRange*opacity;
3849 if (graphic_context[n]->stroke.alpha != (double) TransparentAlpha)
3850 graphic_context[n]->stroke.alpha=graphic_context[n]->stroke_alpha;
3851 else
3852 graphic_context[n]->stroke.alpha=(MagickRealType)
3853 ClampToQuantum((double) QuantumRange*opacity);
3854 graphic_context[n]->stroke.alpha_trait=BlendPixelTrait;
3855 break;
3856 }
3857 if (LocaleCompare("stroke-width",keyword) == 0)
3858 {
3859 (void) GetNextToken(q,&q,extent,token);
3860 if (graphic_context[n]->clip_path != MagickFalse)
3861 break;
3862 graphic_context[n]->stroke_width=GetDrawValue(token,&next_token);
3863 if ((token == next_token) ||
3864 (graphic_context[n]->stroke_width < 0.0))
3865 ThrowPointExpectedException(token,exception);
3866 break;
3867 }
3868 status=MagickFalse;
3869 break;
3870 }
3871 case 't':
3872 case 'T':
3873 {
3874 if (LocaleCompare("text",keyword) == 0)
3875 {
3876 primitive_type=TextPrimitive;
3877 cursor=0.0;
3878 break;
3879 }
3880 if (LocaleCompare("text-align",keyword) == 0)
3881 {
3882 ssize_t
3883 align;
3884
3885 (void) GetNextToken(q,&q,extent,token);
3886 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3887 if (align == -1)
3888 {
3889 status=MagickFalse;
3890 break;
3891 }
3892 graphic_context[n]->align=(AlignType) align;
3893 break;
3894 }
3895 if (LocaleCompare("text-anchor",keyword) == 0)
3896 {
3897 ssize_t
3898 align;
3899
3900 (void) GetNextToken(q,&q,extent,token);
3901 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3902 if (align == -1)
3903 {
3904 status=MagickFalse;
3905 break;
3906 }
3907 graphic_context[n]->align=(AlignType) align;
3908 break;
3909 }
3910 if (LocaleCompare("text-antialias",keyword) == 0)
3911 {
3912 (void) GetNextToken(q,&q,extent,token);
3913 graphic_context[n]->text_antialias=StringToLong(token) != 0 ?
3914 MagickTrue : MagickFalse;
3915 break;
3916 }
3917 if (LocaleCompare("text-undercolor",keyword) == 0)
3918 {
3919 (void) GetNextToken(q,&q,extent,token);
3920 status&=(MagickStatusType) QueryColorCompliance(token,AllCompliance,
3921 &graphic_context[n]->undercolor,exception);
3922 break;
3923 }
3924 if (LocaleCompare("translate",keyword) == 0)
3925 {
3926 (void) GetNextToken(q,&q,extent,token);
3927 affine.tx=GetDrawValue(token,&next_token);
3928 if (token == next_token)
3929 ThrowPointExpectedException(token,exception);
3930 (void) GetNextToken(q,&q,extent,token);
3931 if (*token == ',')
3932 (void) GetNextToken(q,&q,extent,token);
3933 affine.ty=GetDrawValue(token,&next_token);
3934 if (token == next_token)
3935 ThrowPointExpectedException(token,exception);
3936 cursor=0.0;
3937 break;
3938 }
3939 status=MagickFalse;
3940 break;
3941 }
3942 case 'u':
3943 case 'U':
3944 {
3945 if (LocaleCompare("use",keyword) == 0)
3946 {
3947 const char
3948 *use;
3949
3950 /*
3951 Get a macro from the MVG document, and "use" it here.
3952 */
3953 (void) GetNextToken(q,&q,extent,token);
3954 use=(const char *) GetValueFromSplayTree(macros,token);
3955 if (use != (const char *) NULL)
3956 {
3957 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3958 (void) CloneString(&clone_info->primitive,use);
3959 status=RenderMVGContent(image,clone_info,depth+1,exception);
3960 clone_info=DestroyDrawInfo(clone_info);
3961 }
3962 break;
3963 }
3964 status=MagickFalse;
3965 break;
3966 }
3967 case 'v':
3968 case 'V':
3969 {
3970 if (LocaleCompare("viewbox",keyword) == 0)
3971 {
3972 (void) GetNextToken(q,&q,extent,token);
3973 graphic_context[n]->viewbox.x=CastDoubleToSsizeT(ceil(
3974 GetDrawValue(token,&next_token)-0.5));
3975 if (token == next_token)
3976 ThrowPointExpectedException(token,exception);
3977 (void) GetNextToken(q,&q,extent,token);
3978 if (*token == ',')
3979 (void) GetNextToken(q,&q,extent,token);
3980 graphic_context[n]->viewbox.y=CastDoubleToSsizeT(
3981 ceil(GetDrawValue(token,&next_token)-0.5));
3982 if (token == next_token)
3983 ThrowPointExpectedException(token,exception);
3984 (void) GetNextToken(q,&q,extent,token);
3985 if (*token == ',')
3986 (void) GetNextToken(q,&q,extent,token);
3987 graphic_context[n]->viewbox.width=CastDoubleToSizeT(floor(
3988 GetDrawValue(token,&next_token)+0.5));
3989 if (token == next_token)
3990 ThrowPointExpectedException(token,exception);
3991 (void) GetNextToken(q,&q,extent,token);
3992 if (*token == ',')
3993 (void) GetNextToken(q,&q,extent,token);
3994 graphic_context[n]->viewbox.height=CastDoubleToSizeT(floor(
3995 GetDrawValue(token,&next_token)+0.5));
3996 if (token == next_token)
3997 ThrowPointExpectedException(token,exception);
3998 break;
3999 }
4000 status=MagickFalse;
4001 break;
4002 }
4003 case 'w':
4004 case 'W':
4005 {
4006 if (LocaleCompare("word-spacing",keyword) == 0)
4007 {
4008 (void) GetNextToken(q,&q,extent,token);
4009 graphic_context[n]->interword_spacing=GetDrawValue(token,
4010 &next_token);
4011 if (token == next_token)
4012 ThrowPointExpectedException(token,exception);
4013 break;
4014 }
4015 status=MagickFalse;
4016 break;
4017 }
4018 default:
4019 {
4020 status=MagickFalse;
4021 break;
4022 }
4023 }
4024 if (status == MagickFalse)
4025 break;
4026 if ((fabs(affine.sx-1.0) >= MagickEpsilon) ||
4027 (fabs(affine.rx) >= MagickEpsilon) || (fabs(affine.ry) >= MagickEpsilon) ||
4028 (fabs(affine.sy-1.0) >= MagickEpsilon) ||
4029 (fabs(affine.tx) >= MagickEpsilon) || (fabs(affine.ty) >= MagickEpsilon))
4030 {
4031 graphic_context[n]->affine.sx=current.sx*affine.sx+current.ry*affine.rx;
4032 graphic_context[n]->affine.rx=current.rx*affine.sx+current.sy*affine.rx;
4033 graphic_context[n]->affine.ry=current.sx*affine.ry+current.ry*affine.sy;
4034 graphic_context[n]->affine.sy=current.rx*affine.ry+current.sy*affine.sy;
4035 graphic_context[n]->affine.tx=current.sx*affine.tx+current.ry*affine.ty+
4036 current.tx;
4037 graphic_context[n]->affine.ty=current.rx*affine.tx+current.sy*affine.ty+
4038 current.ty;
4039 }
4040 if (primitive_type == UndefinedPrimitive)
4041 {
4042 if (*q == '\0')
4043 {
4044 if (number_stops > 1)
4045 {
4046 GradientType
4047 type;
4048
4049 type=LinearGradient;
4050 if (draw_info->gradient.type == RadialGradient)
4051 type=RadialGradient;
4052 (void) GradientImage(image,type,PadSpread,stops,number_stops,
4053 exception);
4054 }
4055 if (number_stops > 0)
4056 stops=(StopInfo *) RelinquishMagickMemory(stops);
4057 }
4058 if ((draw_info->debug != MagickFalse) && (q > p))
4059 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int)
4060 (q-p-1),p);
4061 continue;
4062 }
4063 /*
4064 Parse the primitive attributes.
4065 */
4066 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4067 if (primitive_info[i].text != (char *) NULL)
4068 primitive_info[i].text=DestroyString(primitive_info[i].text);
4069 i=0;
4070 mvg_info.offset=i;
4071 j=0;
4072 primitive_info[0].point.x=0.0;
4073 primitive_info[0].point.y=0.0;
4074 primitive_info[0].coordinates=0;
4075 primitive_info[0].method=FloodfillMethod;
4076 primitive_info[0].closed_subpath=MagickFalse;
4077 for (x=0; *q != '\0'; x++)
4078 {
4079 /*
4080 Define points.
4081 */
4082 if (IsPoint(q) == MagickFalse)
4083 break;
4084 (void) GetNextToken(q,&q,extent,token);
4085 point.x=GetDrawValue(token,&next_token);
4086 if (token == next_token)
4087 ThrowPointExpectedException(token,exception);
4088 (void) GetNextToken(q,&q,extent,token);
4089 if (*token == ',')
4090 (void) GetNextToken(q,&q,extent,token);
4091 point.y=GetDrawValue(token,&next_token);
4092 if (token == next_token)
4093 ThrowPointExpectedException(token,exception);
4094 (void) GetNextToken(q,(const char **) NULL,extent,token);
4095 if (*token == ',')
4096 (void) GetNextToken(q,&q,extent,token);
4097 primitive_info[i].primitive=primitive_type;
4098 primitive_info[i].point=point;
4099 primitive_info[i].coordinates=0;
4100 primitive_info[i].method=FloodfillMethod;
4101 primitive_info[i].closed_subpath=MagickFalse;
4102 i++;
4103 mvg_info.offset=i;
4104 if (i < (ssize_t) number_points)
4105 continue;
4106 status&=(MagickStatusType) CheckPrimitiveExtent(&mvg_info,(double)
4107 number_points);
4108 primitive_info=(*mvg_info.primitive_info);
4109 }
4110 if (status == MagickFalse)
4111 break;
4112 if (primitive_info[j].text != (char *) NULL)
4113 primitive_info[j].text=DestroyString(primitive_info[j].text);
4114 primitive_info[j].primitive=primitive_type;
4115 primitive_info[j].coordinates=(size_t) x;
4116 primitive_info[j].method=FloodfillMethod;
4117 primitive_info[j].closed_subpath=MagickFalse;
4118 /*
4119 Circumscribe primitive within a circle.
4120 */
4121 bounds.x1=primitive_info[j].point.x;
4122 bounds.y1=primitive_info[j].point.y;
4123 bounds.x2=primitive_info[j].point.x;
4124 bounds.y2=primitive_info[j].point.y;
4125 for (k=1; k < (ssize_t) primitive_info[j].coordinates; k++)
4126 {
4127 point=primitive_info[j+k].point;
4128 if (point.x < bounds.x1)
4129 bounds.x1=point.x;
4130 if (point.y < bounds.y1)
4131 bounds.y1=point.y;
4132 if (point.x > bounds.x2)
4133 bounds.x2=point.x;
4134 if (point.y > bounds.y2)
4135 bounds.y2=point.y;
4136 }
4137 /*
4138 Speculate how many points our primitive might consume.
4139 */
4140 coordinates=(double) primitive_info[j].coordinates;
4141 switch (primitive_type)
4142 {
4143 case RectanglePrimitive:
4144 {
4145 coordinates*=5.0;
4146 break;
4147 }
4148 case RoundRectanglePrimitive:
4149 {
4150 double
4151 alpha,
4152 beta,
4153 radius;
4154
4155 alpha=bounds.x2-bounds.x1;
4156 beta=bounds.y2-bounds.y1;
4157 radius=hypot(alpha,beta);
4158 coordinates*=5.0;
4159 coordinates+=2.0*((size_t) ceil((double) MagickPI*radius))+6.0*
4160 BezierQuantum+360.0;
4161 break;
4162 }
4163 case BezierPrimitive:
4164 {
4165 coordinates=(BezierQuantum*(double) primitive_info[j].coordinates);
4166 break;
4167 }
4168 case PathPrimitive:
4169 {
4170 char
4171 *s,
4172 *t;
4173
4174 (void) GetNextToken(q,&q,extent,token);
4175 coordinates=1.0;
4176 t=token;
4177 for (s=token; *s != '\0'; s=t)
4178 {
4179 double
4180 value;
4181
4182 value=GetDrawValue(s,&t);
4183 (void) value;
4184 if (s == t)
4185 {
4186 t++;
4187 continue;
4188 }
4189 coordinates++;
4190 }
4191 for (s=token; *s != '\0'; s++)
4192 if (strspn(s,"AaCcQqSsTt") != 0)
4193 coordinates+=(20.0*BezierQuantum)+360.0;
4194 break;
4195 }
4196 default:
4197 break;
4198 }
4199 if (status == MagickFalse)
4200 break;
4201 if (((size_t) (i+coordinates)) >= number_points)
4202 {
4203 /*
4204 Resize based on speculative points required by primitive.
4205 */
4206 number_points+=(size_t) coordinates+1;
4207 if (number_points < (size_t) coordinates)
4208 {
4209 (void) ThrowMagickException(exception,GetMagickModule(),
4210 ResourceLimitError,"MemoryAllocationFailed","`%s'",
4211 image->filename);
4212 break;
4213 }
4214 mvg_info.offset=i;
4215 status&=(MagickStatusType) CheckPrimitiveExtent(&mvg_info,(double)
4216 number_points);
4217 primitive_info=(*mvg_info.primitive_info);
4218 }
4219 status&=(MagickStatusType) CheckPrimitiveExtent(&mvg_info,
4220 PrimitiveExtentPad);
4221 primitive_info=(*mvg_info.primitive_info);
4222 if (status == MagickFalse)
4223 break;
4224 mvg_info.offset=j;
4225 switch (primitive_type)
4226 {
4227 case PointPrimitive:
4228 default:
4229 {
4230 if (primitive_info[j].coordinates != 1)
4231 {
4232 status=MagickFalse;
4233 break;
4234 }
4235 status&=(MagickStatusType) TracePoint(primitive_info+j,
4236 primitive_info[j].point);
4237 primitive_info=(*mvg_info.primitive_info);
4238 i=j+(ssize_t) primitive_info[j].coordinates;
4239 break;
4240 }
4241 case LinePrimitive:
4242 {
4243 if (primitive_info[j].coordinates != 2)
4244 {
4245 status=MagickFalse;
4246 break;
4247 }
4248 status&=(MagickStatusType) TraceLine(primitive_info+j,
4249 primitive_info[j].point,primitive_info[j+1].point);
4250 primitive_info=(*mvg_info.primitive_info);
4251 i=j+(ssize_t) primitive_info[j].coordinates;
4252 break;
4253 }
4254 case RectanglePrimitive:
4255 {
4256 if (primitive_info[j].coordinates != 2)
4257 {
4258 status=MagickFalse;
4259 break;
4260 }
4261 status&=(MagickStatusType) TraceRectangle(primitive_info+j,
4262 primitive_info[j].point,primitive_info[j+1].point);
4263 primitive_info=(*mvg_info.primitive_info);
4264 i=j+(ssize_t) primitive_info[j].coordinates;
4265 break;
4266 }
4267 case RoundRectanglePrimitive:
4268 {
4269 if (primitive_info[j].coordinates != 3)
4270 {
4271 status=MagickFalse;
4272 break;
4273 }
4274 if ((primitive_info[j+2].point.x < 0.0) ||
4275 (primitive_info[j+2].point.y < 0.0))
4276 {
4277 status=MagickFalse;
4278 break;
4279 }
4280 if ((primitive_info[j+1].point.x-primitive_info[j].point.x) < 0.0)
4281 {
4282 status=MagickFalse;
4283 break;
4284 }
4285 if ((primitive_info[j+1].point.y-primitive_info[j].point.y) < 0.0)
4286 {
4287 status=MagickFalse;
4288 break;
4289 }
4290 status&=(MagickStatusType) TraceRoundRectangle(&mvg_info,
4291 primitive_info[j].point,primitive_info[j+1].point,
4292 primitive_info[j+2].point);
4293 primitive_info=(*mvg_info.primitive_info);
4294 i=j+(ssize_t) primitive_info[j].coordinates;
4295 break;
4296 }
4297 case ArcPrimitive:
4298 {
4299 if (primitive_info[j].coordinates != 3)
4300 {
4301 status=MagickFalse;
4302 break;
4303 }
4304 status&=(MagickStatusType) TraceArc(&mvg_info,primitive_info[j].point,
4305 primitive_info[j+1].point,primitive_info[j+2].point);
4306 primitive_info=(*mvg_info.primitive_info);
4307 i=j+(ssize_t) primitive_info[j].coordinates;
4308 break;
4309 }
4310 case EllipsePrimitive:
4311 {
4312 if (primitive_info[j].coordinates != 3)
4313 {
4314 status=MagickFalse;
4315 break;
4316 }
4317 if ((primitive_info[j+1].point.x < 0.0) ||
4318 (primitive_info[j+1].point.y < 0.0))
4319 {
4320 status=MagickFalse;
4321 break;
4322 }
4323 status&=(MagickStatusType) TraceEllipse(&mvg_info,
4324 primitive_info[j].point,primitive_info[j+1].point,
4325 primitive_info[j+2].point);
4326 primitive_info=(*mvg_info.primitive_info);
4327 i=j+(ssize_t) primitive_info[j].coordinates;
4328 break;
4329 }
4330 case CirclePrimitive:
4331 {
4332 if (primitive_info[j].coordinates != 2)
4333 {
4334 status=MagickFalse;
4335 break;
4336 }
4337 status&=(MagickStatusType) TraceCircle(&mvg_info,
4338 primitive_info[j].point,primitive_info[j+1].point);
4339 primitive_info=(*mvg_info.primitive_info);
4340 i=j+(ssize_t) primitive_info[j].coordinates;
4341 break;
4342 }
4343 case PolylinePrimitive:
4344 {
4345 if (primitive_info[j].coordinates < 1)
4346 {
4347 status=MagickFalse;
4348 break;
4349 }
4350 break;
4351 }
4352 case PolygonPrimitive:
4353 {
4354 if (primitive_info[j].coordinates < 3)
4355 {
4356 status=MagickFalse;
4357 break;
4358 }
4359 primitive_info[i]=primitive_info[j];
4360 primitive_info[i].coordinates=0;
4361 primitive_info[j].coordinates++;
4362 primitive_info[j].closed_subpath=MagickTrue;
4363 i++;
4364 break;
4365 }
4366 case BezierPrimitive:
4367 {
4368 if (primitive_info[j].coordinates < 3)
4369 {
4370 status=MagickFalse;
4371 break;
4372 }
4373 status&=(MagickStatusType) TraceBezier(&mvg_info,
4374 primitive_info[j].coordinates);
4375 primitive_info=(*mvg_info.primitive_info);
4376 i=j+(ssize_t) primitive_info[j].coordinates;
4377 break;
4378 }
4379 case PathPrimitive:
4380 {
4381 coordinates=(double) TracePath(&mvg_info,token,exception);
4382 primitive_info=(*mvg_info.primitive_info);
4383 if (coordinates < 0.0)
4384 {
4385 status=MagickFalse;
4386 break;
4387 }
4388 i=(ssize_t) (j+coordinates);
4389 break;
4390 }
4391 case AlphaPrimitive:
4392 case ColorPrimitive:
4393 {
4394 ssize_t
4395 method;
4396
4397 if (primitive_info[j].coordinates != 1)
4398 {
4399 status=MagickFalse;
4400 break;
4401 }
4402 (void) GetNextToken(q,&q,extent,token);
4403 method=ParseCommandOption(MagickMethodOptions,MagickFalse,token);
4404 if (method == -1)
4405 {
4406 status=MagickFalse;
4407 break;
4408 }
4409 primitive_info[j].method=(PaintMethod) method;
4410 break;
4411 }
4412 case TextPrimitive:
4413 {
4414 if (primitive_info[j].coordinates != 1)
4415 {
4416 status=MagickFalse;
4417 break;
4418 }
4419 if (*token != ',')
4420 (void) GetNextToken(q,&q,extent,token);
4421 (void) CloneString(&primitive_info[j].text,token);
4422 /*
4423 Compute text cursor offset.
4424 */
4425 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
4426 if ((fabs(mvg_info.point.x-primitive_info->point.x) < MagickEpsilon) &&
4427 (fabs(mvg_info.point.y-primitive_info->point.y) < MagickEpsilon))
4428 {
4429 mvg_info.point=primitive_info->point;
4430 primitive_info->point.x+=cursor;
4431 }
4432 else
4433 {
4434 mvg_info.point=primitive_info->point;
4435 cursor=0.0;
4436 }
4437 clone_info->render=MagickFalse;
4438 clone_info->text=AcquireString(token);
4439 status&=(MagickStatusType) GetTypeMetrics(image,clone_info,
4440 &metrics,exception);
4441 clone_info=DestroyDrawInfo(clone_info);
4442 cursor+=metrics.width;
4443 if (graphic_context[n]->compliance != SVGCompliance)
4444 cursor=0.0;
4445 break;
4446 }
4447 case ImagePrimitive:
4448 {
4449 if (primitive_info[j].coordinates != 2)
4450 {
4451 status=MagickFalse;
4452 break;
4453 }
4454 (void) GetNextToken(q,&q,extent,token);
4455 (void) CloneString(&primitive_info[j].text,token);
4456 break;
4457 }
4458 }
4459 mvg_info.offset=i;
4460 if (status == 0)
4461 break;
4462 primitive_info[i].primitive=UndefinedPrimitive;
4463 if ((draw_info->debug != MagickFalse) && (q > p))
4464 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int) (q-p),p);
4465 /*
4466 Sanity check.
4467 */
4468 status&=(MagickStatusType) CheckPrimitiveExtent(&mvg_info,ExpandAffine(
4469 &graphic_context[n]->affine));
4470 primitive_info=(*mvg_info.primitive_info);
4471 if (status == 0)
4472 break;
4473 status&=(MagickStatusType) CheckPrimitiveExtent(&mvg_info,(double)
4474 graphic_context[n]->stroke_width);
4475 primitive_info=(*mvg_info.primitive_info);
4476 if (status == 0)
4477 break;
4478 if (i == 0)
4479 continue;
4480 /*
4481 Transform points.
4482 */
4483 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4484 {
4485 point=primitive_info[i].point;
4486 primitive_info[i].point.x=graphic_context[n]->affine.sx*point.x+
4487 graphic_context[n]->affine.ry*point.y+graphic_context[n]->affine.tx;
4488 primitive_info[i].point.y=graphic_context[n]->affine.rx*point.x+
4489 graphic_context[n]->affine.sy*point.y+graphic_context[n]->affine.ty;
4490 point=primitive_info[i].point;
4491 if (point.x < graphic_context[n]->bounds.x1)
4492 graphic_context[n]->bounds.x1=point.x;
4493 if (point.y < graphic_context[n]->bounds.y1)
4494 graphic_context[n]->bounds.y1=point.y;
4495 if (point.x > graphic_context[n]->bounds.x2)
4496 graphic_context[n]->bounds.x2=point.x;
4497 if (point.y > graphic_context[n]->bounds.y2)
4498 graphic_context[n]->bounds.y2=point.y;
4499 if (primitive_info[i].primitive == ImagePrimitive)
4500 break;
4501 if (i >= (ssize_t) number_points)
4502 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
4503 }
4504 if (graphic_context[n]->render != MagickFalse)
4505 {
4506 if ((n != 0) && (graphic_context[n]->compliance != SVGCompliance) &&
4507 (graphic_context[n]->clip_mask != (char *) NULL) &&
4508 (LocaleCompare(graphic_context[n]->clip_mask,
4509 graphic_context[n-1]->clip_mask) != 0))
4510 {
4511 const char
4512 *clip_path;
4513
4514 clip_path=(const char *) GetValueFromSplayTree(macros,
4515 graphic_context[n]->clip_mask);
4516 if (clip_path != (const char *) NULL)
4517 (void) SetImageArtifact(image,graphic_context[n]->clip_mask,
4518 clip_path);
4519 status&=(MagickStatusType) DrawClipPath(image,graphic_context[n],
4520 graphic_context[n]->clip_mask,exception);
4521 }
4522 status&=(MagickStatusType) DrawPrimitive(image,graphic_context[n],
4523 primitive_info,exception);
4524 }
4525 proceed=SetImageProgress(image,RenderImageTag,q-primitive,(MagickSizeType)
4526 primitive_extent);
4527 if (proceed == MagickFalse)
4528 break;
4529 if (status == 0)
4530 break;
4531 }
4532 if (draw_info->debug != MagickFalse)
4533 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end draw-image");
4534 /*
4535 Relinquish resources.
4536 */
4537 macros=DestroySplayTree(macros);
4538 token=DestroyString(token);
4539 if (primitive_info != (PrimitiveInfo *) NULL)
4540 {
4541 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4542 if (primitive_info[i].text != (char *) NULL)
4543 primitive_info[i].text=DestroyString(primitive_info[i].text);
4544 primitive_info=(PrimitiveInfo *) RelinquishMagickMemory(primitive_info);
4545 }
4546 primitive=DestroyString(primitive);
4547 if (stops != (StopInfo *) NULL)
4548 stops=(StopInfo *) RelinquishMagickMemory(stops);
4549 for ( ; n >= 0; n--)
4550 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
4551 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
4552 if ((status == MagickFalse) && (exception->severity < ErrorException))
4553 ThrowBinaryException(DrawError,"NonconformingDrawingPrimitiveDefinition",
4554 keyword);
4555 return(status != 0 ? MagickTrue : MagickFalse);
4556}
4557
4558MagickExport MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info,
4559 ExceptionInfo *exception)
4560{
4561 return(RenderMVGContent(image,draw_info,0,exception));
4562}
4563␌
4564/*
4565%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4566% %
4567% %
4568% %
4569% D r a w P a t t e r n P a t h %
4570% %
4571% %
4572% %
4573%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4574%
4575% DrawPatternPath() draws a pattern.
4576%
4577% The format of the DrawPatternPath method is:
4578%
4579% MagickBooleanType DrawPatternPath(Image *image,const DrawInfo *draw_info,
4580% const char *name,Image **pattern,ExceptionInfo *exception)
4581%
4582% A description of each parameter follows:
4583%
4584% o image: the image.
4585%
4586% o draw_info: the draw info.
4587%
4588% o name: the pattern name.
4589%
4590% o image: the image.
4591%
4592% o exception: return any errors or warnings in this structure.
4593%
4594*/
4595MagickExport MagickBooleanType DrawPatternPath(Image *image,
4596 const DrawInfo *draw_info,const char *name,Image **pattern,
4597 ExceptionInfo *exception)
4598{
4599 char
4600 property[MagickPathExtent];
4601
4602 const char
4603 *geometry,
4604 *path,
4605 *type;
4606
4607 DrawInfo
4608 *clone_info;
4609
4610 ImageInfo
4611 *image_info;
4612
4613 MagickBooleanType
4614 status;
4615
4616 assert(image != (Image *) NULL);
4617 assert(image->signature == MagickCoreSignature);
4618 assert(draw_info != (const DrawInfo *) NULL);
4619 assert(name != (const char *) NULL);
4620 if (IsEventLogging() != MagickFalse)
4621 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4622 (void) FormatLocaleString(property,MagickPathExtent,"%s",name);
4623 path=GetImageArtifact(image,property);
4624 if (path == (const char *) NULL)
4625 return(MagickFalse);
4626 (void) FormatLocaleString(property,MagickPathExtent,"%s-geometry",name);
4627 geometry=GetImageArtifact(image,property);
4628 if (geometry == (const char *) NULL)
4629 return(MagickFalse);
4630 if ((*pattern) != (Image *) NULL)
4631 *pattern=DestroyImage(*pattern);
4632 image_info=AcquireImageInfo();
4633 image_info->size=AcquireString(geometry);
4634 *pattern=AcquireImage(image_info,exception);
4635 image_info=DestroyImageInfo(image_info);
4636 (void) QueryColorCompliance("#00000000",AllCompliance,
4637 &(*pattern)->background_color,exception);
4638 (void) SetImageBackgroundColor(*pattern,exception);
4639 if (draw_info->debug != MagickFalse)
4640 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
4641 "begin pattern-path %s %s",name,geometry);
4642 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
4643 if (clone_info->fill_pattern != (Image *) NULL)
4644 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
4645 if (clone_info->stroke_pattern != (Image *) NULL)
4646 clone_info->stroke_pattern=DestroyImage(clone_info->stroke_pattern);
4647 (void) FormatLocaleString(property,MagickPathExtent,"%s-type",name);
4648 type=GetImageArtifact(image,property);
4649 if (type != (const char *) NULL)
4650 clone_info->gradient.type=(GradientType) ParseCommandOption(
4651 MagickGradientOptions,MagickFalse,type);
4652 (void) CloneString(&clone_info->primitive,path);
4653 status=RenderMVGContent(*pattern,clone_info,0,exception);
4654 clone_info=DestroyDrawInfo(clone_info);
4655 if (draw_info->debug != MagickFalse)
4656 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end pattern-path");
4657 return(status);
4658}
4659␌
4660/*
4661%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4662% %
4663% %
4664% %
4665+ D r a w P o l y g o n P r i m i t i v e %
4666% %
4667% %
4668% %
4669%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4670%
4671% DrawPolygonPrimitive() draws a polygon on the image.
4672%
4673% The format of the DrawPolygonPrimitive method is:
4674%
4675% MagickBooleanType DrawPolygonPrimitive(Image *image,
4676% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info,
4677% ExceptionInfo *exception)
4678%
4679% A description of each parameter follows:
4680%
4681% o image: the image.
4682%
4683% o draw_info: the draw info.
4684%
4685% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
4686%
4687% o exception: return any errors or warnings in this structure.
4688%
4689*/
4690
4691static PolygonInfo **DestroyPolygonTLS(PolygonInfo **polygon_info)
4692{
4693 ssize_t
4694 i;
4695
4696 assert(polygon_info != (PolygonInfo **) NULL);
4697 for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
4698 if (polygon_info[i] != (PolygonInfo *) NULL)
4699 polygon_info[i]=DestroyPolygonInfo(polygon_info[i]);
4700 polygon_info=(PolygonInfo **) RelinquishMagickMemory(polygon_info);
4701 return(polygon_info);
4702}
4703
4704static PolygonInfo **AcquirePolygonTLS(const PrimitiveInfo *primitive_info,
4705 ExceptionInfo *exception)
4706{
4707 PathInfo
4708 *magick_restrict path_info;
4709
4710 PolygonInfo
4711 **polygon_info;
4712
4713 size_t
4714 number_threads;
4715
4716 number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
4717 polygon_info=(PolygonInfo **) AcquireQuantumMemory(number_threads,
4718 sizeof(*polygon_info));
4719 if (polygon_info == (PolygonInfo **) NULL)
4720 {
4721 (void) ThrowMagickException(exception,GetMagickModule(),
4722 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4723 return((PolygonInfo **) NULL);
4724 }
4725 (void) memset(polygon_info,0,number_threads*sizeof(*polygon_info));
4726 path_info=ConvertPrimitiveToPath(primitive_info,exception);
4727 if (path_info == (PathInfo *) NULL)
4728 return(DestroyPolygonTLS(polygon_info));
4729 polygon_info[0]=ConvertPathToPolygon(path_info,exception);
4730 if (polygon_info[0] == (PolygonInfo *) NULL)
4731 {
4732 (void) ThrowMagickException(exception,GetMagickModule(),
4733 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4734 return(DestroyPolygonTLS(polygon_info));
4735 }
4736 path_info=(PathInfo *) RelinquishMagickMemory(path_info);
4737 return(polygon_info);
4738}
4739
4740static MagickBooleanType ClonePolygonEdgesTLS(PolygonInfo **polygon_info,
4741 const size_t number_threads,ExceptionInfo *exception)
4742{
4743 ssize_t
4744 i;
4745
4746 for (i=1; i < (ssize_t) number_threads; i++)
4747 {
4748 EdgeInfo
4749 *edge_info;
4750
4751 ssize_t
4752 j;
4753
4754 polygon_info[i]=(PolygonInfo *) AcquireMagickMemory(
4755 sizeof(*polygon_info[i]));
4756 if (polygon_info[i] == (PolygonInfo *) NULL)
4757 {
4758 (void) ThrowMagickException(exception,GetMagickModule(),
4759 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4760 return(MagickFalse);
4761 }
4762 polygon_info[i]->number_edges=0;
4763 edge_info=polygon_info[0]->edges;
4764 polygon_info[i]->edges=(EdgeInfo *) AcquireQuantumMemory(
4765 polygon_info[0]->number_edges,sizeof(*edge_info));
4766 if (polygon_info[i]->edges == (EdgeInfo *) NULL)
4767 {
4768 (void) ThrowMagickException(exception,GetMagickModule(),
4769 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4770 return(MagickFalse);
4771 }
4772 (void) memcpy(polygon_info[i]->edges,edge_info,
4773 polygon_info[0]->number_edges*sizeof(*edge_info));
4774 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4775 polygon_info[i]->edges[j].points=(PointInfo *) NULL;
4776 polygon_info[i]->number_edges=polygon_info[0]->number_edges;
4777 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4778 {
4779 edge_info=polygon_info[0]->edges+j;
4780 polygon_info[i]->edges[j].points=(PointInfo *) AcquireQuantumMemory(
4781 edge_info->number_points,sizeof(*edge_info));
4782 if (polygon_info[i]->edges[j].points == (PointInfo *) NULL)
4783 {
4784 (void) ThrowMagickException(exception,GetMagickModule(),
4785 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4786 return(MagickFalse);
4787 }
4788 (void) memcpy(polygon_info[i]->edges[j].points,edge_info->points,
4789 edge_info->number_points*sizeof(*edge_info->points));
4790 }
4791 }
4792 return(MagickTrue);
4793}
4794
4795static size_t DestroyEdge(PolygonInfo *polygon_info,const ssize_t edge)
4796{
4797 assert(edge < (ssize_t) polygon_info->number_edges);
4798 polygon_info->edges[edge].points=(PointInfo *) RelinquishMagickMemory(
4799 polygon_info->edges[edge].points);
4800 polygon_info->number_edges--;
4801 if (edge < (ssize_t) polygon_info->number_edges)
4802 (void) memmove(polygon_info->edges+edge,polygon_info->edges+edge+1,
4803 (polygon_info->number_edges-(size_t) edge)*sizeof(*polygon_info->edges));
4804 return(polygon_info->number_edges);
4805}
4806
4807static double GetFillAlpha(PolygonInfo *polygon_info,const double mid,
4808 const MagickBooleanType fill,const FillRule fill_rule,const ssize_t x,
4809 const ssize_t y,double *stroke_alpha)
4810{
4811 double
4812 alpha,
4813 beta,
4814 distance,
4815 subpath_alpha;
4816
4817 const PointInfo
4818 *q;
4819
4820 EdgeInfo
4821 *p;
4822
4823 PointInfo
4824 delta;
4825
4826 ssize_t
4827 i,
4828 j,
4829 winding_number;
4830
4831 /*
4832 Compute fill & stroke opacity for this (x,y) point.
4833 */
4834 *stroke_alpha=0.0;
4835 subpath_alpha=0.0;
4836 p=polygon_info->edges;
4837 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4838 {
4839 if ((double) y <= (p->bounds.y1-mid-0.5))
4840 break;
4841 if ((double) y > (p->bounds.y2+mid+0.5))
4842 {
4843 p--;
4844 (void) DestroyEdge(polygon_info,j--);
4845 continue;
4846 }
4847 if (((double) x <= (p->bounds.x1-mid-0.5)) ||
4848 ((double) x > (p->bounds.x2+mid+0.5)))
4849 continue;
4850 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4851 for ( ; i < (ssize_t) p->number_points; i++)
4852 {
4853 if ((double) y <= (p->points[i-1].y-mid-0.5))
4854 break;
4855 if ((double) y > (p->points[i].y+mid+0.5))
4856 continue;
4857 if (p->scanline != (double) y)
4858 {
4859 p->scanline=(double) y;
4860 p->highwater=(size_t) i;
4861 }
4862 /*
4863 Compute distance between a point and an edge.
4864 */
4865 q=p->points+i-1;
4866 delta.x=(q+1)->x-q->x;
4867 delta.y=(q+1)->y-q->y;
4868 beta=delta.x*(x-q->x)+delta.y*(y-q->y); /* segLen*point-cos(theta) */
4869 if (beta <= 0.0)
4870 {
4871 /*
4872 Cosine <= 0, point is closest to q.
4873 */
4874 delta.x=(double) x-q->x;
4875 delta.y=(double) y-q->y;
4876 distance=delta.x*delta.x+delta.y*delta.y;
4877 }
4878 else
4879 {
4880 alpha=delta.x*delta.x+delta.y*delta.y; /* segLen*segLen */
4881 if (beta >= alpha)
4882 {
4883 /*
4884 Point is closest to q+1.
4885 */
4886 delta.x=(double) x-(q+1)->x;
4887 delta.y=(double) y-(q+1)->y;
4888 distance=delta.x*delta.x+delta.y*delta.y;
4889 }
4890 else
4891 {
4892 /*
4893 Point is closest to point between q & q+1.
4894 */
4895 alpha=MagickSafeReciprocal(alpha);
4896 beta=delta.x*(y-q->y)-delta.y*(x-q->x);
4897 distance=alpha*beta*beta;
4898 }
4899 }
4900 /*
4901 Compute stroke & subpath opacity.
4902 */
4903 beta=0.0;
4904 if (p->ghostline == MagickFalse)
4905 {
4906 alpha=mid+0.5;
4907 if ((*stroke_alpha < 1.0) &&
4908 (distance <= ((alpha+0.25)*(alpha+0.25))))
4909 {
4910 alpha=mid-0.5;
4911 if (distance <= ((alpha+0.25)*(alpha+0.25)))
4912 *stroke_alpha=1.0;
4913 else
4914 {
4915 beta=1.0;
4916 if (fabs(distance-1.0) >= MagickEpsilon)
4917 beta=sqrt((double) distance);
4918 alpha=beta-mid-0.5;
4919 if (*stroke_alpha < ((alpha-0.25)*(alpha-0.25)))
4920 *stroke_alpha=(alpha-0.25)*(alpha-0.25);
4921 }
4922 }
4923 }
4924 if ((fill == MagickFalse) || (distance > 1.0) || (subpath_alpha >= 1.0))
4925 continue;
4926 if (distance <= 0.0)
4927 {
4928 subpath_alpha=1.0;
4929 continue;
4930 }
4931 if (distance > 1.0)
4932 continue;
4933 if (fabs(beta) < MagickEpsilon)
4934 {
4935 beta=1.0;
4936 if (fabs(distance-1.0) >= MagickEpsilon)
4937 beta=sqrt(distance);
4938 }
4939 alpha=beta-1.0;
4940 if (subpath_alpha < (alpha*alpha))
4941 subpath_alpha=alpha*alpha;
4942 }
4943 }
4944 /*
4945 Compute fill opacity.
4946 */
4947 if (fill == MagickFalse)
4948 return(0.0);
4949 if (subpath_alpha >= 1.0)
4950 return(1.0);
4951 /*
4952 Determine winding number.
4953 */
4954 winding_number=0;
4955 p=polygon_info->edges;
4956 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4957 {
4958 if ((double) y <= p->bounds.y1)
4959 break;
4960 if (((double) y > p->bounds.y2) || ((double) x <= p->bounds.x1))
4961 continue;
4962 if ((double) x > p->bounds.x2)
4963 {
4964 winding_number+=p->direction != 0 ? 1 : -1;
4965 continue;
4966 }
4967 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4968 for ( ; i < (ssize_t) (p->number_points-1); i++)
4969 if ((double) y <= p->points[i].y)
4970 break;
4971 q=p->points+i-1;
4972 if ((((q+1)->x-q->x)*(y-q->y)) <= (((q+1)->y-q->y)*(x-q->x)))
4973 winding_number+=p->direction != 0 ? 1 : -1;
4974 }
4975 if (fill_rule != NonZeroRule)
4976 {
4977 if ((MagickAbsoluteValue(winding_number) & 0x01) != 0)
4978 return(1.0);
4979 }
4980 else
4981 if (MagickAbsoluteValue(winding_number) != 0)
4982 return(1.0);
4983 return(subpath_alpha);
4984}
4985
4986static MagickBooleanType DrawPolygonPrimitive(Image *image,
4987 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info,
4988 ExceptionInfo *exception)
4989{
4990 typedef struct _ExtentInfo
4991 {
4992 ssize_t
4993 x1,
4994 y1,
4995 x2,
4996 y2;
4997 } ExtentInfo;
4998
4999 CacheView
5000 *image_view;
5001
5002 const char
5003 *artifact;
5004
5005 double
5006 mid;
5007
5008 EdgeInfo
5009 *p;
5010
5011 ExtentInfo
5012 poly_extent;
5013
5014 MagickBooleanType
5015 fill,
5016 status;
5017
5018 PolygonInfo
5019 **magick_restrict polygon_info;
5020
5021 SegmentInfo
5022 bounds;
5023
5024 size_t
5025 number_threads;
5026
5027 ssize_t
5028 i,
5029 y;
5030
5031 assert(image != (Image *) NULL);
5032 assert(image->signature == MagickCoreSignature);
5033 assert(draw_info != (DrawInfo *) NULL);
5034 assert(draw_info->signature == MagickCoreSignature);
5035 assert(primitive_info != (PrimitiveInfo *) NULL);
5036 if (IsEventLogging() != MagickFalse)
5037 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
5038 if (primitive_info->coordinates <= 1)
5039 return(MagickTrue);
5040 /*
5041 Compute bounding box.
5042 */
5043 polygon_info=AcquirePolygonTLS(primitive_info,exception);
5044 if (polygon_info == (PolygonInfo **) NULL)
5045 return(MagickFalse);
5046 if (draw_info->debug != MagickFalse)
5047 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-polygon");
5048 fill=(primitive_info->method == FillToBorderMethod) ||
5049 (primitive_info->method == FloodfillMethod) ? MagickTrue : MagickFalse;
5050 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
5051 bounds=polygon_info[0]->edges[0].bounds;
5052 artifact=GetImageArtifact(image,"draw:render-bounding-rectangles");
5053 if (IsStringTrue(artifact) != MagickFalse)
5054 (void) DrawBoundingRectangles(image,draw_info,polygon_info[0],exception);
5055 for (i=1; i < (ssize_t) polygon_info[0]->number_edges; i++)
5056 {
5057 p=polygon_info[0]->edges+i;
5058 if (p->bounds.x1 < bounds.x1)
5059 bounds.x1=p->bounds.x1;
5060 if (p->bounds.y1 < bounds.y1)
5061 bounds.y1=p->bounds.y1;
5062 if (p->bounds.x2 > bounds.x2)
5063 bounds.x2=p->bounds.x2;
5064 if (p->bounds.y2 > bounds.y2)
5065 bounds.y2=p->bounds.y2;
5066 }
5067 bounds.x1-=(mid+1.0);
5068 bounds.y1-=(mid+1.0);
5069 bounds.x2+=(mid+1.0);
5070 bounds.y2+=(mid+1.0);
5071 if ((bounds.x1 >= (double) image->columns) ||
5072 (bounds.y1 >= (double) image->rows) ||
5073 (bounds.x2 <= 0.0) || (bounds.y2 <= 0.0))
5074 {
5075 polygon_info=DestroyPolygonTLS(polygon_info);
5076 return(MagickTrue); /* virtual polygon */
5077 }
5078 bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double) image->columns-1.0 ?
5079 (double) image->columns-1.0 : bounds.x1;
5080 bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double) image->rows-1.0 ?
5081 (double) image->rows-1.0 : bounds.y1;
5082 bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double) image->columns-1.0 ?
5083 (double) image->columns-1.0 : bounds.x2;
5084 bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double) image->rows-1.0 ?
5085 (double) image->rows-1.0 : bounds.y2;
5086 poly_extent.x1=CastDoubleToSsizeT(ceil(bounds.x1-0.5));
5087 poly_extent.y1=CastDoubleToSsizeT(ceil(bounds.y1-0.5));
5088 poly_extent.x2=CastDoubleToSsizeT(floor(bounds.x2+0.5));
5089 poly_extent.y2=CastDoubleToSsizeT(floor(bounds.y2+0.5));
5090 number_threads=(size_t) GetMagickNumberThreads(image,image,(size_t)
5091 (poly_extent.y2-poly_extent.y1+1),1);
5092 status=ClonePolygonEdgesTLS(polygon_info,number_threads,exception);
5093 if (status == MagickFalse)
5094 {
5095 polygon_info=DestroyPolygonTLS(polygon_info);
5096 return(status);
5097 }
5098 image_view=AcquireAuthenticCacheView(image,exception);
5099 if ((primitive_info->coordinates == 1) ||
5100 (polygon_info[0]->number_edges == 0))
5101 {
5102 /*
5103 Draw point.
5104 */
5105#if defined(MAGICKCORE_OPENMP_SUPPORT)
5106 #pragma omp parallel for schedule(static) shared(status) \
5107 num_threads((int) number_threads)
5108#endif
5109 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5110 {
5111 PixelInfo
5112 pixel;
5113
5114 ssize_t
5115 x;
5116
5117 Quantum
5118 *magick_restrict q;
5119
5120 if (status == MagickFalse)
5121 continue;
5122 x=poly_extent.x1;
5123 q=GetCacheViewAuthenticPixels(image_view,x,y,(size_t) (poly_extent.x2-
5124 x+1),1,exception);
5125 if (q == (Quantum *) NULL)
5126 {
5127 status=MagickFalse;
5128 continue;
5129 }
5130 GetPixelInfo(image,&pixel);
5131 for ( ; x <= poly_extent.x2; x++)
5132 {
5133 if ((x == CastDoubleToSsizeT(ceil(primitive_info->point.x-0.5))) &&
5134 (y == CastDoubleToSsizeT(ceil(primitive_info->point.y-0.5))))
5135 {
5136 GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,&pixel,
5137 exception);
5138 SetPixelViaPixelInfo(image,&pixel,q);
5139 }
5140 q+=(ptrdiff_t) GetPixelChannels(image);
5141 }
5142 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
5143 status=MagickFalse;
5144 }
5145 image_view=DestroyCacheView(image_view);
5146 polygon_info=DestroyPolygonTLS(polygon_info);
5147 if (draw_info->debug != MagickFalse)
5148 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5149 " end draw-polygon");
5150 return(status);
5151 }
5152 /*
5153 Draw polygon or line.
5154 */
5155#if defined(MAGICKCORE_OPENMP_SUPPORT)
5156 #pragma omp parallel for schedule(static) shared(status) \
5157 num_threads((int) number_threads)
5158#endif
5159 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5160 {
5161 const int
5162 id = GetOpenMPThreadId();
5163
5164 Quantum
5165 *magick_restrict q;
5166
5167 ssize_t
5168 x;
5169
5170 if (status == MagickFalse)
5171 continue;
5172 q=GetCacheViewAuthenticPixels(image_view,poly_extent.x1,y,(size_t)
5173 (poly_extent.x2-poly_extent.x1+1),1,exception);
5174 if (q == (Quantum *) NULL)
5175 {
5176 status=MagickFalse;
5177 continue;
5178 }
5179 for (x=poly_extent.x1; x <= poly_extent.x2; x++)
5180 {
5181 double
5182 fill_alpha,
5183 stroke_alpha;
5184
5185 PixelInfo
5186 fill_color,
5187 stroke_color;
5188
5189 /*
5190 Fill and/or stroke.
5191 */
5192 fill_alpha=GetFillAlpha(polygon_info[id],mid,fill,draw_info->fill_rule,
5193 x,y,&stroke_alpha);
5194 if (draw_info->stroke_antialias == MagickFalse)
5195 {
5196 fill_alpha=fill_alpha >= AntialiasThreshold ? 1.0 : 0.0;
5197 stroke_alpha=stroke_alpha >= AntialiasThreshold ? 1.0 : 0.0;
5198 }
5199 GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,&fill_color,
5200 exception);
5201 CompositePixelOver(image,&fill_color,fill_alpha*fill_color.alpha,q,
5202 (double) GetPixelAlpha(image,q),q);
5203 GetStrokeColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,&stroke_color,
5204 exception);
5205 CompositePixelOver(image,&stroke_color,stroke_alpha*stroke_color.alpha,q,
5206 (double) GetPixelAlpha(image,q),q);
5207 q+=(ptrdiff_t) GetPixelChannels(image);
5208 }
5209 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
5210 status=MagickFalse;
5211 }
5212 image_view=DestroyCacheView(image_view);
5213 polygon_info=DestroyPolygonTLS(polygon_info);
5214 if (draw_info->debug != MagickFalse)
5215 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-polygon");
5216 return(status);
5217}
5218␌
5219/*
5220%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5221% %
5222% %
5223% %
5224% D r a w P r i m i t i v e %
5225% %
5226% %
5227% %
5228%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5229%
5230% DrawPrimitive() draws a primitive (line, rectangle, ellipse) on the image.
5231%
5232% The format of the DrawPrimitive method is:
5233%
5234% MagickBooleanType DrawPrimitive(Image *image,const DrawInfo *draw_info,
5235% PrimitiveInfo *primitive_info,ExceptionInfo *exception)
5236%
5237% A description of each parameter follows:
5238%
5239% o image: the image.
5240%
5241% o draw_info: the draw info.
5242%
5243% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5244%
5245% o exception: return any errors or warnings in this structure.
5246%
5247*/
5248static void LogPrimitiveInfo(const PrimitiveInfo *primitive_info)
5249{
5250 const char
5251 *methods[] =
5252 {
5253 "point",
5254 "replace",
5255 "floodfill",
5256 "filltoborder",
5257 "reset",
5258 "?"
5259 };
5260
5261 PointInfo
5262 p,
5263 point,
5264 q;
5265
5266 ssize_t
5267 i,
5268 x;
5269
5270 ssize_t
5271 coordinates,
5272 y;
5273
5274 x=CastDoubleToSsizeT(ceil(primitive_info->point.x-0.5));
5275 y=CastDoubleToSsizeT(ceil(primitive_info->point.y-0.5));
5276 switch (primitive_info->primitive)
5277 {
5278 case AlphaPrimitive:
5279 {
5280 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5281 "AlphaPrimitive %.20g,%.20g %s",(double) x,(double) y,
5282 methods[primitive_info->method]);
5283 return;
5284 }
5285 case ColorPrimitive:
5286 {
5287 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5288 "ColorPrimitive %.20g,%.20g %s",(double) x,(double) y,
5289 methods[primitive_info->method]);
5290 return;
5291 }
5292 case ImagePrimitive:
5293 {
5294 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5295 "ImagePrimitive %.20g,%.20g",(double) x,(double) y);
5296 return;
5297 }
5298 case PointPrimitive:
5299 {
5300 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5301 "PointPrimitive %.20g,%.20g %s",(double) x,(double) y,
5302 methods[primitive_info->method]);
5303 return;
5304 }
5305 case TextPrimitive:
5306 {
5307 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5308 "TextPrimitive %.20g,%.20g",(double) x,(double) y);
5309 return;
5310 }
5311 default:
5312 break;
5313 }
5314 coordinates=0;
5315 p=primitive_info[0].point;
5316 q.x=(-1.0);
5317 q.y=(-1.0);
5318 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
5319 {
5320 point=primitive_info[i].point;
5321 if (coordinates <= 0)
5322 {
5323 coordinates=(ssize_t) primitive_info[i].coordinates;
5324 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5325 " begin open (%.20g)",(double) coordinates);
5326 p=point;
5327 }
5328 point=primitive_info[i].point;
5329 if ((fabs(q.x-point.x) >= MagickEpsilon) ||
5330 (fabs(q.y-point.y) >= MagickEpsilon))
5331 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5332 " %.20g: %.18g,%.18g",(double) coordinates,point.x,point.y);
5333 else
5334 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5335 " %.20g: %g %g (duplicate)",(double) coordinates,point.x,point.y);
5336 q=point;
5337 coordinates--;
5338 if (coordinates > 0)
5339 continue;
5340 if ((fabs(p.x-point.x) >= MagickEpsilon) ||
5341 (fabs(p.y-point.y) >= MagickEpsilon))
5342 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end last (%.20g)",
5343 (double) coordinates);
5344 else
5345 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end open (%.20g)",
5346 (double) coordinates);
5347 }
5348}
5349
5350MagickExport MagickBooleanType DrawPrimitive(Image *image,
5351 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info,
5352 ExceptionInfo *exception)
5353{
5354 CacheView
5355 *image_view;
5356
5357 MagickStatusType
5358 status;
5359
5360 ssize_t
5361 i,
5362 x;
5363
5364 ssize_t
5365 y;
5366
5367 if (draw_info->debug != MagickFalse)
5368 {
5369 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5370 " begin draw-primitive");
5371 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5372 " affine: %g,%g,%g,%g,%g,%g",draw_info->affine.sx,
5373 draw_info->affine.rx,draw_info->affine.ry,draw_info->affine.sy,
5374 draw_info->affine.tx,draw_info->affine.ty);
5375 }
5376 status=MagickTrue;
5377 if ((IsGrayColorspace(image->colorspace) != MagickFalse) &&
5378 ((IsPixelInfoGray(&draw_info->fill) == MagickFalse) ||
5379 (IsPixelInfoGray(&draw_info->stroke) == MagickFalse)))
5380 status&=(MagickStatusType) SetImageColorspace(image,sRGBColorspace,
5381 exception);
5382 if (draw_info->compliance == SVGCompliance)
5383 {
5384 status&=(MagickStatusType) SetImageMask(image,WritePixelMask,
5385 draw_info->clipping_mask,exception);
5386 status&=(MagickStatusType) SetImageMask(image,CompositePixelMask,
5387 draw_info->composite_mask,exception);
5388 }
5389 x=CastDoubleToSsizeT(ceil(primitive_info->point.x-0.5));
5390 y=CastDoubleToSsizeT(ceil(primitive_info->point.y-0.5));
5391 image_view=AcquireAuthenticCacheView(image,exception);
5392 switch (primitive_info->primitive)
5393 {
5394 case AlphaPrimitive:
5395 {
5396 if ((image->alpha_trait & BlendPixelTrait) == 0)
5397 status&=(MagickStatusType) SetImageAlphaChannel(image,
5398 OpaqueAlphaChannel,exception);
5399 switch (primitive_info->method)
5400 {
5401 case PointMethod:
5402 default:
5403 {
5404 PixelInfo
5405 pixel;
5406
5407 Quantum
5408 *q;
5409
5410 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5411 if (q == (Quantum *) NULL)
5412 break;
5413 GetFillColor(draw_info,x,y,&pixel,exception);
5414 SetPixelAlpha(image,ClampToQuantum(pixel.alpha),q);
5415 status&=(MagickStatusType) SyncCacheViewAuthenticPixels(image_view,
5416 exception);
5417 break;
5418 }
5419 case ReplaceMethod:
5420 {
5421 PixelInfo
5422 pixel,
5423 target;
5424
5425 status&=(MagickStatusType) GetOneCacheViewVirtualPixelInfo(image_view,
5426 x,y,&target,exception);
5427 GetPixelInfo(image,&pixel);
5428 for (y=0; y < (ssize_t) image->rows; y++)
5429 {
5430 Quantum
5431 *magick_restrict q;
5432
5433 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5434 exception);
5435 if (q == (Quantum *) NULL)
5436 break;
5437 for (x=0; x < (ssize_t) image->columns; x++)
5438 {
5439 GetPixelInfoPixel(image,q,&pixel);
5440 if (IsFuzzyEquivalencePixelInfo(&pixel,&target) == MagickFalse)
5441 {
5442 q+=(ptrdiff_t) GetPixelChannels(image);
5443 continue;
5444 }
5445 GetFillColor(draw_info,x,y,&pixel,exception);
5446 SetPixelAlpha(image,ClampToQuantum(pixel.alpha),q);
5447 q+=(ptrdiff_t) GetPixelChannels(image);
5448 }
5449 status&=(MagickStatusType) SyncCacheViewAuthenticPixels(image_view,
5450 exception);
5451 if (status == MagickFalse)
5452 break;
5453 }
5454 break;
5455 }
5456 case FloodfillMethod:
5457 case FillToBorderMethod:
5458 {
5459 ChannelType
5460 channel_mask;
5461
5462 PixelInfo
5463 target;
5464
5465 status&=(MagickStatusType) GetOneVirtualPixelInfo(image,
5466 TileVirtualPixelMethod,x,y,&target,exception);
5467 if (primitive_info->method == FillToBorderMethod)
5468 {
5469 target.red=(double) draw_info->border_color.red;
5470 target.green=(double) draw_info->border_color.green;
5471 target.blue=(double) draw_info->border_color.blue;
5472 }
5473 channel_mask=SetImageChannelMask(image,AlphaChannel);
5474 status&=(MagickStatusType) FloodfillPaintImage(image,draw_info,
5475 &target,x,y,primitive_info->method == FloodfillMethod ?
5476 MagickFalse : MagickTrue,exception);
5477 (void) SetImageChannelMask(image,channel_mask);
5478 break;
5479 }
5480 case ResetMethod:
5481 {
5482 PixelInfo
5483 pixel;
5484
5485 for (y=0; y < (ssize_t) image->rows; y++)
5486 {
5487 Quantum
5488 *magick_restrict q;
5489
5490 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5491 exception);
5492 if (q == (Quantum *) NULL)
5493 break;
5494 for (x=0; x < (ssize_t) image->columns; x++)
5495 {
5496 GetFillColor(draw_info,x,y,&pixel,exception);
5497 SetPixelAlpha(image,ClampToQuantum(pixel.alpha),q);
5498 q+=(ptrdiff_t) GetPixelChannels(image);
5499 }
5500 status&=(MagickStatusType) SyncCacheViewAuthenticPixels(image_view,
5501 exception);
5502 if (status == MagickFalse)
5503 break;
5504 }
5505 break;
5506 }
5507 }
5508 break;
5509 }
5510 case ColorPrimitive:
5511 {
5512 switch (primitive_info->method)
5513 {
5514 case PointMethod:
5515 default:
5516 {
5517 PixelInfo
5518 pixel;
5519
5520 Quantum
5521 *q;
5522
5523 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5524 if (q == (Quantum *) NULL)
5525 break;
5526 GetPixelInfo(image,&pixel);
5527 GetFillColor(draw_info,x,y,&pixel,exception);
5528 SetPixelViaPixelInfo(image,&pixel,q);
5529 status&=(MagickStatusType) SyncCacheViewAuthenticPixels(image_view,
5530 exception);
5531 break;
5532 }
5533 case ReplaceMethod:
5534 {
5535 PixelInfo
5536 pixel,
5537 target;
5538
5539 status&=(MagickStatusType) GetOneCacheViewVirtualPixelInfo(image_view,
5540 x,y,&target,exception);
5541 for (y=0; y < (ssize_t) image->rows; y++)
5542 {
5543 Quantum
5544 *magick_restrict q;
5545
5546 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5547 exception);
5548 if (q == (Quantum *) NULL)
5549 break;
5550 for (x=0; x < (ssize_t) image->columns; x++)
5551 {
5552 GetPixelInfoPixel(image,q,&pixel);
5553 if (IsFuzzyEquivalencePixelInfo(&pixel,&target) == MagickFalse)
5554 {
5555 q+=(ptrdiff_t) GetPixelChannels(image);
5556 continue;
5557 }
5558 GetFillColor(draw_info,x,y,&pixel,exception);
5559 SetPixelViaPixelInfo(image,&pixel,q);
5560 q+=(ptrdiff_t) GetPixelChannels(image);
5561 }
5562 status&=(MagickStatusType) SyncCacheViewAuthenticPixels(image_view,
5563 exception);
5564 if (status == MagickFalse)
5565 break;
5566 }
5567 break;
5568 }
5569 case FloodfillMethod:
5570 case FillToBorderMethod:
5571 {
5572 PixelInfo
5573 target;
5574
5575 status&=(MagickStatusType) GetOneVirtualPixelInfo(image,
5576 TileVirtualPixelMethod,x,y,&target,exception);
5577 if (primitive_info->method == FillToBorderMethod)
5578 {
5579 target.red=(double) draw_info->border_color.red;
5580 target.green=(double) draw_info->border_color.green;
5581 target.blue=(double) draw_info->border_color.blue;
5582 }
5583 status&=(MagickStatusType) FloodfillPaintImage(image,draw_info,
5584 &target,x,y,primitive_info->method == FloodfillMethod ?
5585 MagickFalse : MagickTrue,exception);
5586 break;
5587 }
5588 case ResetMethod:
5589 {
5590 PixelInfo
5591 pixel;
5592
5593 GetPixelInfo(image,&pixel);
5594 for (y=0; y < (ssize_t) image->rows; y++)
5595 {
5596 Quantum
5597 *magick_restrict q;
5598
5599 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5600 exception);
5601 if (q == (Quantum *) NULL)
5602 break;
5603 for (x=0; x < (ssize_t) image->columns; x++)
5604 {
5605 GetFillColor(draw_info,x,y,&pixel,exception);
5606 SetPixelViaPixelInfo(image,&pixel,q);
5607 q+=(ptrdiff_t) GetPixelChannels(image);
5608 }
5609 status&=(MagickStatusType) SyncCacheViewAuthenticPixels(image_view,
5610 exception);
5611 if (status == MagickFalse)
5612 break;
5613 }
5614 break;
5615 }
5616 }
5617 break;
5618 }
5619 case ImagePrimitive:
5620 {
5621 AffineMatrix
5622 affine;
5623
5624 char
5625 composite_geometry[MagickPathExtent];
5626
5627 Image
5628 *composite_image,
5629 *composite_images;
5630
5631 ImageInfo
5632 *clone_info;
5633
5634 RectangleInfo
5635 geometry;
5636
5637 ssize_t
5638 x1,
5639 y1;
5640
5641 if (primitive_info->text == (char *) NULL)
5642 break;
5643 clone_info=AcquireImageInfo();
5644 composite_images=(Image *) NULL;
5645 if (LocaleNCompare(primitive_info->text,"data:",5) == 0)
5646 composite_images=ReadInlineImage(clone_info,primitive_info->text,
5647 exception);
5648 else
5649 if (*primitive_info->text != '\0')
5650 {
5651 const char
5652 *option;
5653
5654 MagickBooleanType
5655 path_status;
5656
5657 struct stat
5658 attributes;
5659
5660 /*
5661 Read composite image.
5662 */
5663 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5664 MagickPathExtent);
5665 (void) SetImageInfo(clone_info,1,exception);
5666 option=GetImageOption(clone_info,"svg:embedding");
5667 if ((option == (char *) NULL) &&
5668 (IsStringTrue(option) == MagickFalse))
5669 {
5670 const MagickInfo
5671 *magick_info;
5672
5673 magick_info=GetMagickInfo(clone_info->magick,exception);
5674 if ((magick_info != (const MagickInfo*) NULL) &&
5675 (LocaleCompare(magick_info->magick_module,"SVG") == 0))
5676 {
5677 (void) ThrowMagickException(exception,GetMagickModule(),
5678 CorruptImageError,"ImageTypeNotSupported","`%s'",
5679 clone_info->filename);
5680 clone_info=DestroyImageInfo(clone_info);
5681 break;
5682 }
5683 }
5684 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5685 MagickPathExtent);
5686 if (clone_info->size != (char *) NULL)
5687 clone_info->size=DestroyString(clone_info->size);
5688 if (clone_info->extract != (char *) NULL)
5689 clone_info->extract=DestroyString(clone_info->extract);
5690 path_status=GetPathAttributes(clone_info->filename,&attributes);
5691 if (path_status != MagickFalse)
5692 {
5693 if (S_ISCHR(attributes.st_mode) == 0)
5694 composite_images=ReadImage(clone_info,exception);
5695 else
5696 (void) ThrowMagickException(exception,GetMagickModule(),
5697 FileOpenError,"UnableToOpenFile","`%s'",
5698 clone_info->filename);
5699 }
5700 else
5701 if ((LocaleCompare(clone_info->magick,"ftp") != 0) &&
5702 (LocaleCompare(clone_info->magick,"http") != 0) &&
5703 (LocaleCompare(clone_info->magick,"https") != 0) &&
5704 (LocaleCompare(clone_info->magick,"vid") != 0))
5705 composite_images=ReadImage(clone_info,exception);
5706 else
5707 (void) ThrowMagickException(exception,GetMagickModule(),
5708 FileOpenError,"UnableToOpenFile","`%s'",clone_info->filename);
5709 }
5710 clone_info=DestroyImageInfo(clone_info);
5711 if (composite_images == (Image *) NULL)
5712 {
5713 status=MagickFalse;
5714 break;
5715 }
5716 composite_image=RemoveFirstImageFromList(&composite_images);
5717 composite_images=DestroyImageList(composite_images);
5718 (void) SetImageProgressMonitor(composite_image,(MagickProgressMonitor)
5719 NULL,(void *) NULL);
5720 x1=CastDoubleToSsizeT(ceil(primitive_info[1].point.x-0.5));
5721 y1=CastDoubleToSsizeT(ceil(primitive_info[1].point.y-0.5));
5722 if (((x1 != 0L) && (x1 != (ssize_t) composite_image->columns)) ||
5723 ((y1 != 0L) && (y1 != (ssize_t) composite_image->rows)))
5724 {
5725 /*
5726 Resize image.
5727 */
5728 (void) FormatLocaleString(composite_geometry,MagickPathExtent,
5729 "%gx%g!",primitive_info[1].point.x,primitive_info[1].point.y);
5730 composite_image->filter=image->filter;
5731 status&=(MagickStatusType) TransformImage(&composite_image,
5732 (char *) NULL,composite_geometry,exception);
5733 }
5734 if (composite_image->alpha_trait == UndefinedPixelTrait)
5735 status&=(MagickStatusType) SetImageAlphaChannel(composite_image,
5736 OpaqueAlphaChannel,exception);
5737 if (draw_info->alpha != OpaqueAlpha)
5738 status&=(MagickStatusType) SetImageAlpha(composite_image,
5739 draw_info->alpha,exception);
5740 SetGeometry(image,&geometry);
5741 image->gravity=draw_info->gravity;
5742 geometry.x=x;
5743 geometry.y=y;
5744 (void) FormatLocaleString(composite_geometry,MagickPathExtent,
5745 "%.20gx%.20g%+.20g%+.20g",(double) composite_image->columns,(double)
5746 composite_image->rows,(double) geometry.x,(double) geometry.y);
5747 (void) ParseGravityGeometry(image,composite_geometry,&geometry,exception);
5748 affine=draw_info->affine;
5749 affine.tx=(double) geometry.x;
5750 affine.ty=(double) geometry.y;
5751 composite_image->interpolate=image->interpolate;
5752 if ((draw_info->compose == OverCompositeOp) ||
5753 (draw_info->compose == SrcOverCompositeOp))
5754 status&=(MagickStatusType) DrawAffineImage(image,composite_image,
5755 &affine,exception);
5756 else
5757 status&=(MagickStatusType) CompositeImage(image,composite_image,
5758 draw_info->compose,MagickTrue,geometry.x,geometry.y,exception);
5759 composite_image=DestroyImage(composite_image);
5760 break;
5761 }
5762 case PointPrimitive:
5763 {
5764 PixelInfo
5765 fill_color;
5766
5767 Quantum
5768 *q;
5769
5770 if ((y < 0) || (y >= (ssize_t) image->rows))
5771 break;
5772 if ((x < 0) || (x >= (ssize_t) image->columns))
5773 break;
5774 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5775 if (q == (Quantum *) NULL)
5776 break;
5777 GetFillColor(draw_info,x,y,&fill_color,exception);
5778 CompositePixelOver(image,&fill_color,(double) fill_color.alpha,q,(double)
5779 GetPixelAlpha(image,q),q);
5780 status&=(MagickStatusType) SyncCacheViewAuthenticPixels(image_view,
5781 exception);
5782 break;
5783 }
5784 case TextPrimitive:
5785 {
5786 char
5787 geometry[MagickPathExtent];
5788
5789 DrawInfo
5790 *clone_info;
5791
5792 if (primitive_info->text == (char *) NULL)
5793 break;
5794 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5795 (void) CloneString(&clone_info->text,primitive_info->text);
5796 (void) FormatLocaleString(geometry,MagickPathExtent,"%+f%+f",
5797 primitive_info->point.x,primitive_info->point.y);
5798 (void) CloneString(&clone_info->geometry,geometry);
5799 status&=(MagickStatusType) AnnotateImage(image,clone_info,exception);
5800 clone_info=DestroyDrawInfo(clone_info);
5801 break;
5802 }
5803 default:
5804 {
5805 double
5806 mid,
5807 scale;
5808
5809 DrawInfo
5810 *clone_info;
5811
5812 if (IsEventLogging() != MagickFalse)
5813 LogPrimitiveInfo(primitive_info);
5814 scale=ExpandAffine(&draw_info->affine);
5815 if ((draw_info->dash_pattern != (double *) NULL) &&
5816 (fabs(draw_info->dash_pattern[0]) >= MagickEpsilon) &&
5817 (fabs(scale*draw_info->stroke_width) >= MagickEpsilon) &&
5818 (draw_info->stroke.alpha != (double) TransparentAlpha))
5819 {
5820 /*
5821 Draw dash polygon.
5822 */
5823 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5824 clone_info->stroke_width=0.0;
5825 clone_info->stroke.alpha=(MagickRealType) TransparentAlpha;
5826 status&=(MagickStatusType) DrawPolygonPrimitive(image,clone_info,
5827 primitive_info,exception);
5828 clone_info=DestroyDrawInfo(clone_info);
5829 if (status != MagickFalse)
5830 status&=(MagickStatusType) DrawDashPolygon(draw_info,primitive_info,
5831 image,exception);
5832 break;
5833 }
5834 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
5835 if ((mid > 1.0) &&
5836 ((draw_info->stroke.alpha != (double) TransparentAlpha) ||
5837 (draw_info->stroke_pattern != (Image *) NULL)))
5838 {
5839 double
5840 point_x,
5841 point_y;
5842
5843 MagickBooleanType
5844 closed_path;
5845
5846 /*
5847 Draw strokes while respecting line cap/join attributes.
5848 */
5849 closed_path=primitive_info[0].closed_subpath;
5850 i=(ssize_t) primitive_info[0].coordinates;
5851 point_x=fabs(primitive_info[i-1].point.x-primitive_info[0].point.x);
5852 point_y=fabs(primitive_info[i-1].point.y-primitive_info[0].point.y);
5853 if ((point_x < MagickEpsilon) && (point_y < MagickEpsilon))
5854 closed_path=MagickTrue;
5855 if ((((draw_info->linecap == RoundCap) ||
5856 (closed_path != MagickFalse)) &&
5857 (draw_info->linejoin == RoundJoin)) ||
5858 (primitive_info[i].primitive != UndefinedPrimitive))
5859 {
5860 status&=(MagickStatusType) DrawPolygonPrimitive(image,draw_info,
5861 primitive_info,exception);
5862 break;
5863 }
5864 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5865 clone_info->stroke_width=0.0;
5866 clone_info->stroke.alpha=(MagickRealType) TransparentAlpha;
5867 status&=(MagickStatusType) DrawPolygonPrimitive(image,clone_info,
5868 primitive_info,exception);
5869 clone_info=DestroyDrawInfo(clone_info);
5870 if (status != MagickFalse)
5871 status&=(MagickStatusType) DrawStrokePolygon(image,draw_info,
5872 primitive_info,exception);
5873 break;
5874 }
5875 status&=(MagickStatusType) DrawPolygonPrimitive(image,draw_info,
5876 primitive_info,exception);
5877 break;
5878 }
5879 }
5880 image_view=DestroyCacheView(image_view);
5881 if (draw_info->compliance == SVGCompliance)
5882 {
5883 status&=(MagickStatusType) SetImageMask(image,WritePixelMask,
5884 (Image *) NULL,exception);
5885 status&=(MagickStatusType) SetImageMask(image,CompositePixelMask,
5886 (Image *) NULL,exception);
5887 }
5888 if (draw_info->debug != MagickFalse)
5889 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-primitive");
5890 return(status != 0 ? MagickTrue : MagickFalse);
5891}
5892␌
5893/*
5894%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5895% %
5896% %
5897% %
5898+ D r a w S t r o k e P o l y g o n %
5899% %
5900% %
5901% %
5902%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5903%
5904% DrawStrokePolygon() draws a stroked polygon (line, rectangle, ellipse) on
5905% the image while respecting the line cap and join attributes.
5906%
5907% The format of the DrawStrokePolygon method is:
5908%
5909% MagickBooleanType DrawStrokePolygon(Image *image,
5910% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5911%
5912% A description of each parameter follows:
5913%
5914% o image: the image.
5915%
5916% o draw_info: the draw info.
5917%
5918% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5919%
5920%
5921*/
5922
5923static MagickBooleanType DrawRoundLinecap(Image *image,
5924 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info,
5925 ExceptionInfo *exception)
5926{
5927 PrimitiveInfo
5928 linecap[5];
5929
5930 ssize_t
5931 i;
5932
5933 for (i=0; i < 4; i++)
5934 linecap[i]=(*primitive_info);
5935 linecap[0].coordinates=4;
5936 linecap[1].point.x+=2.0*MagickEpsilon;
5937 linecap[2].point.x+=2.0*MagickEpsilon;
5938 linecap[2].point.y+=2.0*MagickEpsilon;
5939 linecap[3].point.y+=2.0*MagickEpsilon;
5940 linecap[4].primitive=UndefinedPrimitive;
5941 return(DrawPolygonPrimitive(image,draw_info,linecap,exception));
5942}
5943
5944static MagickBooleanType DrawStrokePolygon(Image *image,
5945 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info,
5946 ExceptionInfo *exception)
5947{
5948 DrawInfo
5949 *clone_info;
5950
5951 MagickBooleanType
5952 closed_path;
5953
5954 MagickStatusType
5955 status;
5956
5957 PrimitiveInfo
5958 *stroke_polygon;
5959
5960 const PrimitiveInfo
5961 *p,
5962 *q;
5963
5964 /*
5965 Draw stroked polygon.
5966 */
5967 if (draw_info->debug != MagickFalse)
5968 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5969 " begin draw-stroke-polygon");
5970 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5971 clone_info->fill=draw_info->stroke;
5972 if (clone_info->fill_pattern != (Image *) NULL)
5973 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
5974 if (clone_info->stroke_pattern != (Image *) NULL)
5975 clone_info->fill_pattern=CloneImage(clone_info->stroke_pattern,0,0,
5976 MagickTrue,exception);
5977 clone_info->stroke.alpha=(MagickRealType) TransparentAlpha;
5978 clone_info->stroke_width=0.0;
5979 clone_info->fill_rule=NonZeroRule;
5980 status=MagickTrue;
5981 for (p=primitive_info; p->primitive != UndefinedPrimitive; p+=(ptrdiff_t) p->coordinates)
5982 {
5983 if (p->coordinates == 1)
5984 continue;
5985 stroke_polygon=TraceStrokePolygon(draw_info,p,exception);
5986 if (stroke_polygon == (PrimitiveInfo *) NULL)
5987 {
5988 status=0;
5989 break;
5990 }
5991 status&=(MagickStatusType) DrawPolygonPrimitive(image,clone_info,
5992 stroke_polygon,exception);
5993 stroke_polygon=(PrimitiveInfo *) RelinquishMagickMemory(stroke_polygon);
5994 if (status == 0)
5995 break;
5996 q=p+p->coordinates-1;
5997 closed_path=p->closed_subpath;
5998 if ((draw_info->linecap == RoundCap) && (closed_path == MagickFalse))
5999 {
6000 status&=(MagickStatusType) DrawRoundLinecap(image,draw_info,p,
6001 exception);
6002 status&=(MagickStatusType) DrawRoundLinecap(image,draw_info,q,
6003 exception);
6004 }
6005 }
6006 clone_info=DestroyDrawInfo(clone_info);
6007 if (draw_info->debug != MagickFalse)
6008 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
6009 " end draw-stroke-polygon");
6010 return(status != 0 ? MagickTrue : MagickFalse);
6011}
6012␌
6013/*
6014%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6015% %
6016% %
6017% %
6018% G e t A f f i n e M a t r i x %
6019% %
6020% %
6021% %
6022%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6023%
6024% GetAffineMatrix() returns an AffineMatrix initialized to the identity
6025% matrix.
6026%
6027% The format of the GetAffineMatrix method is:
6028%
6029% void GetAffineMatrix(AffineMatrix *affine_matrix)
6030%
6031% A description of each parameter follows:
6032%
6033% o affine_matrix: the affine matrix.
6034%
6035*/
6036MagickExport void GetAffineMatrix(AffineMatrix *affine_matrix)
6037{
6038 if (IsEventLogging() != MagickFalse)
6039 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
6040 assert(affine_matrix != (AffineMatrix *) NULL);
6041 (void) memset(affine_matrix,0,sizeof(*affine_matrix));
6042 affine_matrix->sx=1.0;
6043 affine_matrix->sy=1.0;
6044}
6045␌
6046/*
6047%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6048% %
6049% %
6050% %
6051+ G e t D r a w I n f o %
6052% %
6053% %
6054% %
6055%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6056%
6057% GetDrawInfo() initializes draw_info to default values from image_info.
6058%
6059% The format of the GetDrawInfo method is:
6060%
6061% void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
6062%
6063% A description of each parameter follows:
6064%
6065% o image_info: the image info..
6066%
6067% o draw_info: the draw info.
6068%
6069*/
6070MagickExport void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
6071{
6072 char
6073 *next_token;
6074
6075 const char
6076 *option;
6077
6078 ExceptionInfo
6079 *exception;
6080
6081 /*
6082 Initialize draw attributes.
6083 */
6084 assert(draw_info != (DrawInfo *) NULL);
6085 if (IsEventLogging() != MagickFalse)
6086 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
6087 (void) memset(draw_info,0,sizeof(*draw_info));
6088 draw_info->image_info=CloneImageInfo(image_info);
6089 GetAffineMatrix(&draw_info->affine);
6090 exception=AcquireExceptionInfo();
6091 (void) QueryColorCompliance("#000F",AllCompliance,&draw_info->fill,
6092 exception);
6093 (void) QueryColorCompliance("#FFF0",AllCompliance,&draw_info->stroke,
6094 exception);
6095 draw_info->stroke_antialias=draw_info->image_info->antialias;
6096 draw_info->stroke_width=1.0;
6097 draw_info->fill_rule=EvenOddRule;
6098 draw_info->alpha=OpaqueAlpha;
6099 draw_info->fill_alpha=OpaqueAlpha;
6100 draw_info->stroke_alpha=OpaqueAlpha;
6101 draw_info->linecap=ButtCap;
6102 draw_info->linejoin=MiterJoin;
6103 draw_info->miterlimit=10;
6104 draw_info->decorate=NoDecoration;
6105 draw_info->pointsize=12.0;
6106 draw_info->undercolor.alpha=(MagickRealType) TransparentAlpha;
6107 draw_info->compose=OverCompositeOp;
6108 draw_info->render=MagickTrue;
6109 draw_info->clip_path=MagickFalse;
6110 draw_info->debug=(GetLogEventMask() & (DrawEvent | AnnotateEvent)) != 0 ?
6111 MagickTrue : MagickFalse;
6112 if (draw_info->image_info->font != (char *) NULL)
6113 draw_info->font=AcquireString(draw_info->image_info->font);
6114 if (draw_info->image_info->density != (char *) NULL)
6115 draw_info->density=AcquireString(draw_info->image_info->density);
6116 draw_info->text_antialias=draw_info->image_info->antialias;
6117 if (fabs(draw_info->image_info->pointsize) >= MagickEpsilon)
6118 draw_info->pointsize=draw_info->image_info->pointsize;
6119 draw_info->border_color=draw_info->image_info->border_color;
6120 if (draw_info->image_info->server_name != (char *) NULL)
6121 draw_info->server_name=AcquireString(draw_info->image_info->server_name);
6122 option=GetImageOption(draw_info->image_info,"direction");
6123 if (option != (const char *) NULL)
6124 draw_info->direction=(DirectionType) ParseCommandOption(
6125 MagickDirectionOptions,MagickFalse,option);
6126 else
6127 draw_info->direction=UndefinedDirection;
6128 option=GetImageOption(draw_info->image_info,"encoding");
6129 if (option != (const char *) NULL)
6130 (void) CloneString(&draw_info->encoding,option);
6131 option=GetImageOption(draw_info->image_info,"family");
6132 if (option != (const char *) NULL)
6133 (void) CloneString(&draw_info->family,option);
6134 option=GetImageOption(draw_info->image_info,"fill");
6135 if (option != (const char *) NULL)
6136 (void) QueryColorCompliance(option,AllCompliance,&draw_info->fill,
6137 exception);
6138 option=GetImageOption(draw_info->image_info,"gravity");
6139 if (option != (const char *) NULL)
6140 draw_info->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
6141 MagickFalse,option);
6142 option=GetImageOption(draw_info->image_info,"interline-spacing");
6143 if (option != (const char *) NULL)
6144 draw_info->interline_spacing=GetDrawValue(option,&next_token);
6145 option=GetImageOption(draw_info->image_info,"interword-spacing");
6146 if (option != (const char *) NULL)
6147 draw_info->interword_spacing=GetDrawValue(option,&next_token);
6148 option=GetImageOption(draw_info->image_info,"kerning");
6149 if (option != (const char *) NULL)
6150 draw_info->kerning=GetDrawValue(option,&next_token);
6151 option=GetImageOption(draw_info->image_info,"stroke");
6152 if (option != (const char *) NULL)
6153 (void) QueryColorCompliance(option,AllCompliance,&draw_info->stroke,
6154 exception);
6155 option=GetImageOption(draw_info->image_info,"strokewidth");
6156 if (option != (const char *) NULL)
6157 draw_info->stroke_width=GetDrawValue(option,&next_token);
6158 option=GetImageOption(draw_info->image_info,"style");
6159 if (option != (const char *) NULL)
6160 draw_info->style=(StyleType) ParseCommandOption(MagickStyleOptions,
6161 MagickFalse,option);
6162 option=GetImageOption(draw_info->image_info,"undercolor");
6163 if (option != (const char *) NULL)
6164 (void) QueryColorCompliance(option,AllCompliance,&draw_info->undercolor,
6165 exception);
6166 option=GetImageOption(draw_info->image_info,"weight");
6167 if (option != (const char *) NULL)
6168 {
6169 ssize_t
6170 weight;
6171
6172 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,option);
6173 if (weight == -1)
6174 weight=(ssize_t) StringToUnsignedLong(option);
6175 draw_info->weight=(size_t) weight;
6176 }
6177 option=GetImageOption(draw_info->image_info,"word-break");
6178 if (option != (const char *) NULL)
6179 draw_info->word_break=(WordBreakType) ParseCommandOption(
6180 MagickWordBreakOptions,MagickFalse,option);
6181 exception=DestroyExceptionInfo(exception);
6182 draw_info->signature=MagickCoreSignature;
6183}
6184␌
6185/*
6186%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6187% %
6188% %
6189% %
6190+ P e r m u t a t e %
6191% %
6192% %
6193% %
6194%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6195%
6196% Permutate() returns the permutation of the (n,k).
6197%
6198% The format of the Permutate method is:
6199%
6200% void Permutate(ssize_t n,ssize_t k)
6201%
6202% A description of each parameter follows:
6203%
6204% o n:
6205%
6206% o k:
6207%
6208%
6209*/
6210static inline double Permutate(const ssize_t n,const ssize_t k)
6211{
6212 double
6213 r;
6214
6215 ssize_t
6216 i;
6217
6218 r=1.0;
6219 for (i=k+1; i <= n; i++)
6220 r*=i;
6221 for (i=1; i <= (n-k); i++)
6222 r/=i;
6223 return(r);
6224}
6225␌
6226/*
6227%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6228% %
6229% %
6230% %
6231+ T r a c e P r i m i t i v e %
6232% %
6233% %
6234% %
6235%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6236%
6237% TracePrimitive is a collection of methods for generating graphic
6238% primitives such as arcs, ellipses, paths, etc.
6239%
6240*/
6241
6242static MagickBooleanType TraceArc(MVGInfo *mvg_info,const PointInfo start,
6243 const PointInfo end,const PointInfo degrees)
6244{
6245 PointInfo
6246 center,
6247 radius;
6248
6249 center.x=0.5*(end.x+start.x);
6250 center.y=0.5*(end.y+start.y);
6251 radius.x=fabs(center.x-start.x);
6252 radius.y=fabs(center.y-start.y);
6253 return(TraceEllipse(mvg_info,center,radius,degrees));
6254}
6255
6256static MagickBooleanType TraceArcPath(MVGInfo *mvg_info,const PointInfo start,
6257 const PointInfo end,const PointInfo arc,const double angle,
6258 const MagickBooleanType large_arc,const MagickBooleanType sweep)
6259{
6260 double
6261 alpha,
6262 beta,
6263 delta,
6264 factor,
6265 gamma,
6266 theta;
6267
6268 MagickStatusType
6269 status;
6270
6271 PointInfo
6272 center,
6273 points[3],
6274 radii;
6275
6276 double
6277 cosine,
6278 sine;
6279
6280 PrimitiveInfo
6281 *primitive_info;
6282
6283 PrimitiveInfo
6284 *p;
6285
6286 ssize_t
6287 i;
6288
6289 size_t
6290 arc_segments;
6291
6292 ssize_t
6293 offset;
6294
6295 offset=mvg_info->offset;
6296 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6297 primitive_info->coordinates=0;
6298 if ((fabs(start.x-end.x) < MagickEpsilon) &&
6299 (fabs(start.y-end.y) < MagickEpsilon))
6300 return(TracePoint(primitive_info,end));
6301 radii.x=fabs(arc.x);
6302 radii.y=fabs(arc.y);
6303 if ((radii.x < MagickEpsilon) || (radii.y < MagickEpsilon))
6304 return(TraceLine(primitive_info,start,end));
6305 cosine=cos(DegreesToRadians(fmod((double) angle,360.0)));
6306 sine=sin(DegreesToRadians(fmod((double) angle,360.0)));
6307 center.x=(double) (cosine*(end.x-start.x)/2+sine*(end.y-start.y)/2);
6308 center.y=(double) (cosine*(end.y-start.y)/2-sine*(end.x-start.x)/2);
6309 delta=(center.x*center.x)/(radii.x*radii.x)+(center.y*center.y)/
6310 (radii.y*radii.y);
6311 if (delta < MagickEpsilon)
6312 return(TraceLine(primitive_info,start,end));
6313 if (delta > 1.0)
6314 {
6315 radii.x*=sqrt((double) delta);
6316 radii.y*=sqrt((double) delta);
6317 }
6318 points[0].x=(double) (cosine*start.x/radii.x+sine*start.y/radii.x);
6319 points[0].y=(double) (cosine*start.y/radii.y-sine*start.x/radii.y);
6320 points[1].x=(double) (cosine*end.x/radii.x+sine*end.y/radii.x);
6321 points[1].y=(double) (cosine*end.y/radii.y-sine*end.x/radii.y);
6322 alpha=points[1].x-points[0].x;
6323 beta=points[1].y-points[0].y;
6324 if (fabs(alpha*alpha+beta*beta) < MagickEpsilon)
6325 return(TraceLine(primitive_info,start,end));
6326 factor=MagickSafeReciprocal(alpha*alpha+beta*beta)-0.25;
6327 if (factor <= 0.0)
6328 factor=0.0;
6329 else
6330 {
6331 factor=sqrt((double) factor);
6332 if (sweep == large_arc)
6333 factor=(-factor);
6334 }
6335 center.x=(double) ((points[0].x+points[1].x)/2-factor*beta);
6336 center.y=(double) ((points[0].y+points[1].y)/2+factor*alpha);
6337 alpha=atan2(points[0].y-center.y,points[0].x-center.x);
6338 theta=atan2(points[1].y-center.y,points[1].x-center.x)-alpha;
6339 if ((theta < 0.0) && (sweep != MagickFalse))
6340 theta+=2.0*MagickPI;
6341 else
6342 if ((theta > 0.0) && (sweep == MagickFalse))
6343 theta-=2.0*MagickPI;
6344 arc_segments=(size_t) CastDoubleToSsizeT(ceil(fabs((double) (theta/(0.5*
6345 MagickPI+MagickEpsilon)))));
6346 status=MagickTrue;
6347 p=primitive_info;
6348 for (i=0; i < (ssize_t) arc_segments; i++)
6349 {
6350 beta=0.5*((alpha+(i+1)*theta/arc_segments)-(alpha+i*theta/arc_segments));
6351 gamma=(8.0/3.0)*sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))*
6352 sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))/
6353 sin(fmod((double) beta,DegreesToRadians(360.0)));
6354 points[0].x=(double) (center.x+cos(fmod((double) (alpha+(double) i*theta/
6355 arc_segments),DegreesToRadians(360.0)))-gamma*sin(fmod((double) (alpha+
6356 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6357 points[0].y=(double) (center.y+sin(fmod((double) (alpha+(double) i*theta/
6358 arc_segments),DegreesToRadians(360.0)))+gamma*cos(fmod((double) (alpha+
6359 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6360 points[2].x=(double) (center.x+cos(fmod((double) (alpha+(double) (i+1)*
6361 theta/arc_segments),DegreesToRadians(360.0))));
6362 points[2].y=(double) (center.y+sin(fmod((double) (alpha+(double) (i+1)*
6363 theta/arc_segments),DegreesToRadians(360.0))));
6364 points[1].x=(double) (points[2].x+gamma*sin(fmod((double) (alpha+(double)
6365 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6366 points[1].y=(double) (points[2].y-gamma*cos(fmod((double) (alpha+(double)
6367 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6368 p->point.x=(p == primitive_info) ? start.x : (p-1)->point.x;
6369 p->point.y=(p == primitive_info) ? start.y : (p-1)->point.y;
6370 (p+1)->point.x=(double) (cosine*radii.x*points[0].x-sine*radii.y*
6371 points[0].y);
6372 (p+1)->point.y=(double) (sine*radii.x*points[0].x+cosine*radii.y*
6373 points[0].y);
6374 (p+2)->point.x=(double) (cosine*radii.x*points[1].x-sine*radii.y*
6375 points[1].y);
6376 (p+2)->point.y=(double) (sine*radii.x*points[1].x+cosine*radii.y*
6377 points[1].y);
6378 (p+3)->point.x=(double) (cosine*radii.x*points[2].x-sine*radii.y*
6379 points[2].y);
6380 (p+3)->point.y=(double) (sine*radii.x*points[2].x+cosine*radii.y*
6381 points[2].y);
6382 if (i == (ssize_t) (arc_segments-1))
6383 (p+3)->point=end;
6384 status&=(MagickStatusType) TraceBezier(mvg_info,4);
6385 if (status == 0)
6386 break;
6387 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
6388 mvg_info->offset+=(ssize_t) p->coordinates;
6389 p+=(ptrdiff_t) p->coordinates;
6390 }
6391 if (status == 0)
6392 return(MagickFalse);
6393 mvg_info->offset=offset;
6394 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6395 primitive_info->coordinates=(size_t) (p-primitive_info);
6396 primitive_info->closed_subpath=MagickFalse;
6397 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6398 {
6399 p->primitive=primitive_info->primitive;
6400 p--;
6401 }
6402 return(MagickTrue);
6403}
6404
6405static MagickBooleanType TraceBezier(MVGInfo *mvg_info,
6406 const size_t number_coordinates)
6407{
6408 double
6409 alpha,
6410 *coefficients,
6411 weight;
6412
6413 PointInfo
6414 end,
6415 point,
6416 *points;
6417
6418 PrimitiveInfo
6419 *primitive_info;
6420
6421 PrimitiveInfo
6422 *p;
6423
6424 ssize_t
6425 i,
6426 j;
6427
6428 size_t
6429 control_points,
6430 quantum;
6431
6432 /*
6433 Allocate coefficients.
6434 */
6435 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6436 quantum=number_coordinates;
6437 for (i=0; i < (ssize_t) number_coordinates; i++)
6438 {
6439 for (j=i+1; j < (ssize_t) number_coordinates; j++)
6440 {
6441 alpha=fabs(primitive_info[j].point.x-primitive_info[i].point.x);
6442 if (alpha > (double) MAGICK_SSIZE_MAX)
6443 {
6444 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6445 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6446 return(MagickFalse);
6447 }
6448 if (alpha > (double) quantum)
6449 quantum=(size_t) alpha;
6450 alpha=fabs(primitive_info[j].point.y-primitive_info[i].point.y);
6451 if (alpha > (double) MAGICK_SSIZE_MAX)
6452 {
6453 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6454 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6455 return(MagickFalse);
6456 }
6457 if (alpha > (double) quantum)
6458 quantum=(size_t) alpha;
6459 }
6460 }
6461 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6462 quantum=MagickMin(quantum/number_coordinates,BezierQuantum);
6463 coefficients=(double *) AcquireQuantumMemory(number_coordinates,
6464 sizeof(*coefficients));
6465 points=(PointInfo *) AcquireQuantumMemory(quantum,number_coordinates*
6466 sizeof(*points));
6467 if ((coefficients == (double *) NULL) || (points == (PointInfo *) NULL))
6468 {
6469 if (points != (PointInfo *) NULL)
6470 points=(PointInfo *) RelinquishMagickMemory(points);
6471 if (coefficients != (double *) NULL)
6472 coefficients=(double *) RelinquishMagickMemory(coefficients);
6473 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6474 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6475 return(MagickFalse);
6476 }
6477 control_points=quantum*number_coordinates;
6478 if (CheckPrimitiveExtent(mvg_info,(double) control_points+1) == MagickFalse)
6479 {
6480 points=(PointInfo *) RelinquishMagickMemory(points);
6481 coefficients=(double *) RelinquishMagickMemory(coefficients);
6482 return(MagickFalse);
6483 }
6484 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6485 /*
6486 Compute bezier points.
6487 */
6488 end=primitive_info[number_coordinates-1].point;
6489 for (i=0; i < (ssize_t) number_coordinates; i++)
6490 coefficients[i]=Permutate((ssize_t) number_coordinates-1,i);
6491 weight=0.0;
6492 for (i=0; i < (ssize_t) control_points; i++)
6493 {
6494 p=primitive_info;
6495 point.x=0.0;
6496 point.y=0.0;
6497 alpha=pow((double) (1.0-weight),(double) number_coordinates-1.0);
6498 for (j=0; j < (ssize_t) number_coordinates; j++)
6499 {
6500 point.x+=alpha*coefficients[j]*p->point.x;
6501 point.y+=alpha*coefficients[j]*p->point.y;
6502 alpha*=weight/(1.0-weight);
6503 p++;
6504 }
6505 points[i]=point;
6506 weight+=1.0/control_points;
6507 }
6508 /*
6509 Bezier curves are just short segmented polys.
6510 */
6511 p=primitive_info;
6512 for (i=0; i < (ssize_t) control_points; i++)
6513 {
6514 if (TracePoint(p,points[i]) == MagickFalse)
6515 {
6516 points=(PointInfo *) RelinquishMagickMemory(points);
6517 coefficients=(double *) RelinquishMagickMemory(coefficients);
6518 return(MagickFalse);
6519 }
6520 p+=(ptrdiff_t) p->coordinates;
6521 }
6522 if (TracePoint(p,end) == MagickFalse)
6523 {
6524 points=(PointInfo *) RelinquishMagickMemory(points);
6525 coefficients=(double *) RelinquishMagickMemory(coefficients);
6526 return(MagickFalse);
6527 }
6528 p+=(ptrdiff_t) p->coordinates;
6529 primitive_info->coordinates=(size_t) (p-primitive_info);
6530 primitive_info->closed_subpath=MagickFalse;
6531 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6532 {
6533 p->primitive=primitive_info->primitive;
6534 p--;
6535 }
6536 points=(PointInfo *) RelinquishMagickMemory(points);
6537 coefficients=(double *) RelinquishMagickMemory(coefficients);
6538 return(MagickTrue);
6539}
6540
6541static MagickBooleanType TraceCircle(MVGInfo *mvg_info,const PointInfo start,
6542 const PointInfo end)
6543{
6544 double
6545 alpha,
6546 beta,
6547 radius;
6548
6549 PointInfo
6550 offset,
6551 degrees;
6552
6553 alpha=end.x-start.x;
6554 beta=end.y-start.y;
6555 radius=hypot((double) alpha,(double) beta);
6556 offset.x=(double) radius;
6557 offset.y=(double) radius;
6558 degrees.x=0.0;
6559 degrees.y=360.0;
6560 return(TraceEllipse(mvg_info,start,offset,degrees));
6561}
6562
6563static MagickBooleanType TraceEllipse(MVGInfo *mvg_info,const PointInfo center,
6564 const PointInfo radii,const PointInfo arc)
6565{
6566 double
6567 coordinates,
6568 delta,
6569 step,
6570 x,
6571 y;
6572
6573 PointInfo
6574 angle,
6575 point;
6576
6577 PrimitiveInfo
6578 *primitive_info;
6579
6580 PrimitiveInfo
6581 *p;
6582
6583 ssize_t
6584 i;
6585
6586 /*
6587 Ellipses are just short segmented polys.
6588 */
6589 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6590 primitive_info->coordinates=0;
6591 if ((fabs(radii.x) < MagickEpsilon) || (fabs(radii.y) < MagickEpsilon))
6592 return(MagickTrue);
6593 delta=MagickSafeReciprocal(MagickMax(radii.x,radii.y));
6594 step=MagickPI/(MagickPI*MagickSafeReciprocal(delta))/8.0;
6595 angle.x=DegreesToRadians(arc.x);
6596 y=arc.y;
6597 while (y < arc.x)
6598 y+=360.0;
6599 angle.y=DegreesToRadians(y);
6600 coordinates=ceil((angle.y-angle.x)/step+1.0);
6601 if (CheckPrimitiveExtent(mvg_info,coordinates+1) == MagickFalse)
6602 return(MagickFalse);
6603 i=0;
6604 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6605 for (p=primitive_info; angle.x < angle.y; angle.x+=step)
6606 {
6607 point.x=cos(fmod(angle.x,DegreesToRadians(360.0)))*radii.x+center.x;
6608 point.y=sin(fmod(angle.x,DegreesToRadians(360.0)))*radii.y+center.y;
6609 if (i++ >= (ssize_t) coordinates)
6610 break;
6611 if (TracePoint(p,point) == MagickFalse)
6612 return(MagickFalse);
6613 p+=(ptrdiff_t) p->coordinates;
6614 }
6615 point.x=cos(fmod(angle.y,DegreesToRadians(360.0)))*radii.x+center.x;
6616 point.y=sin(fmod(angle.y,DegreesToRadians(360.0)))*radii.y+center.y;
6617 if (TracePoint(p,point) == MagickFalse)
6618 return(MagickFalse);
6619 p+=(ptrdiff_t) p->coordinates;
6620 primitive_info->coordinates=(size_t) (p-primitive_info);
6621 primitive_info->closed_subpath=MagickFalse;
6622 x=fabs(primitive_info[0].point.x-
6623 primitive_info[primitive_info->coordinates-1].point.x);
6624 y=fabs(primitive_info[0].point.y-
6625 primitive_info[primitive_info->coordinates-1].point.y);
6626 if ((x < MagickEpsilon) && (y < MagickEpsilon))
6627 primitive_info->closed_subpath=MagickTrue;
6628 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6629 {
6630 p->primitive=primitive_info->primitive;
6631 p--;
6632 }
6633 return(MagickTrue);
6634}
6635
6636static MagickBooleanType TraceLine(PrimitiveInfo *primitive_info,
6637 const PointInfo start,const PointInfo end)
6638{
6639 if (TracePoint(primitive_info,start) == MagickFalse)
6640 return(MagickFalse);
6641 if (TracePoint(primitive_info+1,end) == MagickFalse)
6642 return(MagickFalse);
6643 (primitive_info+1)->primitive=primitive_info->primitive;
6644 primitive_info->coordinates=2;
6645 primitive_info->closed_subpath=MagickFalse;
6646 return(MagickTrue);
6647}
6648
6649static ssize_t TracePath(MVGInfo *mvg_info,const char *path,
6650 ExceptionInfo *exception)
6651{
6652 char
6653 *next_token,
6654 token[MagickPathExtent] = "";
6655
6656 const char
6657 *p;
6658
6659 double
6660 x,
6661 y;
6662
6663 int
6664 attribute,
6665 last_attribute;
6666
6667 MagickBooleanType
6668 status;
6669
6670 PointInfo
6671 end = {0.0, 0.0},
6672 points[4] = { {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0} },
6673 point = {0.0, 0.0},
6674 start = {0.0, 0.0};
6675
6676 PrimitiveInfo
6677 *primitive_info;
6678
6679 PrimitiveType
6680 primitive_type;
6681
6682 PrimitiveInfo
6683 *q;
6684
6685 ssize_t
6686 i;
6687
6688 size_t
6689 number_coordinates,
6690 z_count;
6691
6692 ssize_t
6693 subpath_offset;
6694
6695 subpath_offset=mvg_info->offset;
6696 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6697 status=MagickTrue;
6698 attribute=0;
6699 number_coordinates=0;
6700 z_count=0;
6701 primitive_type=primitive_info->primitive;
6702 q=primitive_info;
6703 for (p=path; *p != '\0'; )
6704 {
6705 if (status == MagickFalse)
6706 break;
6707 while (isspace((int) ((unsigned char) *p)) != 0)
6708 p++;
6709 if (*p == '\0')
6710 break;
6711 last_attribute=attribute;
6712 attribute=(int) (*p++);
6713 switch (attribute)
6714 {
6715 case 'a':
6716 case 'A':
6717 {
6718 double
6719 angle = 0.0;
6720
6721 MagickBooleanType
6722 large_arc = MagickFalse,
6723 sweep = MagickFalse;
6724
6725 PointInfo
6726 arc = {0.0, 0.0};
6727
6728 /*
6729 Elliptical arc.
6730 */
6731 do
6732 {
6733 (void) GetNextToken(p,&p,MagickPathExtent,token);
6734 if (*token == ',')
6735 (void) GetNextToken(p,&p,MagickPathExtent,token);
6736 arc.x=GetDrawValue(token,&next_token);
6737 if (token == next_token)
6738 ThrowPointExpectedException(token,exception);
6739 (void) GetNextToken(p,&p,MagickPathExtent,token);
6740 if (*token == ',')
6741 (void) GetNextToken(p,&p,MagickPathExtent,token);
6742 arc.y=GetDrawValue(token,&next_token);
6743 if (token == next_token)
6744 ThrowPointExpectedException(token,exception);
6745 (void) GetNextToken(p,&p,MagickPathExtent,token);
6746 if (*token == ',')
6747 (void) GetNextToken(p,&p,MagickPathExtent,token);
6748 angle=GetDrawValue(token,&next_token);
6749 if (token == next_token)
6750 ThrowPointExpectedException(token,exception);
6751 (void) GetNextToken(p,&p,MagickPathExtent,token);
6752 if (*token == ',')
6753 (void) GetNextToken(p,&p,MagickPathExtent,token);
6754 large_arc=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6755 (void) GetNextToken(p,&p,MagickPathExtent,token);
6756 if (*token == ',')
6757 (void) GetNextToken(p,&p,MagickPathExtent,token);
6758 sweep=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6759 if (*token == ',')
6760 (void) GetNextToken(p,&p,MagickPathExtent,token);
6761 (void) GetNextToken(p,&p,MagickPathExtent,token);
6762 if (*token == ',')
6763 (void) GetNextToken(p,&p,MagickPathExtent,token);
6764 x=GetDrawValue(token,&next_token);
6765 if (token == next_token)
6766 ThrowPointExpectedException(token,exception);
6767 (void) GetNextToken(p,&p,MagickPathExtent,token);
6768 if (*token == ',')
6769 (void) GetNextToken(p,&p,MagickPathExtent,token);
6770 y=GetDrawValue(token,&next_token);
6771 if (token == next_token)
6772 ThrowPointExpectedException(token,exception);
6773 end.x=(double) (attribute == (int) 'A' ? x : point.x+x);
6774 end.y=(double) (attribute == (int) 'A' ? y : point.y+y);
6775 if (TraceArcPath(mvg_info,point,end,arc,angle,large_arc,sweep) == MagickFalse)
6776 return(-1);
6777 q=(*mvg_info->primitive_info)+mvg_info->offset;
6778 mvg_info->offset+=(ssize_t) q->coordinates;
6779 q+=(ptrdiff_t) q->coordinates;
6780 point=end;
6781 while (isspace((int) ((unsigned char) *p)) != 0)
6782 p++;
6783 if (*p == ',')
6784 p++;
6785 } while (IsPoint(p) != MagickFalse);
6786 break;
6787 }
6788 case 'c':
6789 case 'C':
6790 {
6791 /*
6792 Cubic Bézier curve.
6793 */
6794 do
6795 {
6796 points[0]=point;
6797 for (i=1; i < 4; i++)
6798 {
6799 (void) GetNextToken(p,&p,MagickPathExtent,token);
6800 if (*token == ',')
6801 (void) GetNextToken(p,&p,MagickPathExtent,token);
6802 x=GetDrawValue(token,&next_token);
6803 if (token == next_token)
6804 ThrowPointExpectedException(token,exception);
6805 (void) GetNextToken(p,&p,MagickPathExtent,token);
6806 if (*token == ',')
6807 (void) GetNextToken(p,&p,MagickPathExtent,token);
6808 y=GetDrawValue(token,&next_token);
6809 if (token == next_token)
6810 ThrowPointExpectedException(token,exception);
6811 end.x=(double) (attribute == (int) 'C' ? x : point.x+x);
6812 end.y=(double) (attribute == (int) 'C' ? y : point.y+y);
6813 points[i]=end;
6814 }
6815 for (i=0; i < 4; i++)
6816 (q+i)->point=points[i];
6817 if (TraceBezier(mvg_info,4) == MagickFalse)
6818 return(-1);
6819 q=(*mvg_info->primitive_info)+mvg_info->offset;
6820 mvg_info->offset+=(ssize_t) q->coordinates;
6821 q+=(ptrdiff_t) q->coordinates;
6822 point=end;
6823 while (isspace((int) ((unsigned char) *p)) != 0)
6824 p++;
6825 if (*p == ',')
6826 p++;
6827 } while (IsPoint(p) != MagickFalse);
6828 break;
6829 }
6830 case 'H':
6831 case 'h':
6832 {
6833 do
6834 {
6835 (void) GetNextToken(p,&p,MagickPathExtent,token);
6836 if (*token == ',')
6837 (void) GetNextToken(p,&p,MagickPathExtent,token);
6838 x=GetDrawValue(token,&next_token);
6839 if (token == next_token)
6840 ThrowPointExpectedException(token,exception);
6841 point.x=(double) (attribute == (int) 'H' ? x: point.x+x);
6842 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6843 return(-1);
6844 q=(*mvg_info->primitive_info)+mvg_info->offset;
6845 if (TracePoint(q,point) == MagickFalse)
6846 return(-1);
6847 mvg_info->offset+=(ssize_t) q->coordinates;
6848 q+=(ptrdiff_t) q->coordinates;
6849 while (isspace((int) ((unsigned char) *p)) != 0)
6850 p++;
6851 if (*p == ',')
6852 p++;
6853 } while (IsPoint(p) != MagickFalse);
6854 break;
6855 }
6856 case 'l':
6857 case 'L':
6858 {
6859 /*
6860 Line to.
6861 */
6862 do
6863 {
6864 (void) GetNextToken(p,&p,MagickPathExtent,token);
6865 if (*token == ',')
6866 (void) GetNextToken(p,&p,MagickPathExtent,token);
6867 x=GetDrawValue(token,&next_token);
6868 if (token == next_token)
6869 ThrowPointExpectedException(token,exception);
6870 (void) GetNextToken(p,&p,MagickPathExtent,token);
6871 if (*token == ',')
6872 (void) GetNextToken(p,&p,MagickPathExtent,token);
6873 y=GetDrawValue(token,&next_token);
6874 if (token == next_token)
6875 ThrowPointExpectedException(token,exception);
6876 point.x=(double) (attribute == (int) 'L' ? x : point.x+x);
6877 point.y=(double) (attribute == (int) 'L' ? y : point.y+y);
6878 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6879 return(-1);
6880 q=(*mvg_info->primitive_info)+mvg_info->offset;
6881 if (TracePoint(q,point) == MagickFalse)
6882 return(-1);
6883 mvg_info->offset+=(ssize_t) q->coordinates;
6884 q+=(ptrdiff_t) q->coordinates;
6885 while (isspace((int) ((unsigned char) *p)) != 0)
6886 p++;
6887 if (*p == ',')
6888 p++;
6889 } while (IsPoint(p) != MagickFalse);
6890 break;
6891 }
6892 case 'M':
6893 case 'm':
6894 {
6895 /*
6896 Move to.
6897 */
6898 if (mvg_info->offset != subpath_offset)
6899 {
6900 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6901 primitive_info->coordinates=(size_t) (q-primitive_info);
6902 number_coordinates+=primitive_info->coordinates;
6903 primitive_info=q;
6904 subpath_offset=mvg_info->offset;
6905 }
6906 i=0;
6907 do
6908 {
6909 (void) GetNextToken(p,&p,MagickPathExtent,token);
6910 if (*token == ',')
6911 (void) GetNextToken(p,&p,MagickPathExtent,token);
6912 x=GetDrawValue(token,&next_token);
6913 if (token == next_token)
6914 ThrowPointExpectedException(token,exception);
6915 (void) GetNextToken(p,&p,MagickPathExtent,token);
6916 if (*token == ',')
6917 (void) GetNextToken(p,&p,MagickPathExtent,token);
6918 y=GetDrawValue(token,&next_token);
6919 if (token == next_token)
6920 ThrowPointExpectedException(token,exception);
6921 point.x=(double) (attribute == (int) 'M' ? x : point.x+x);
6922 point.y=(double) (attribute == (int) 'M' ? y : point.y+y);
6923 if (i == 0)
6924 start=point;
6925 i++;
6926 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6927 return(-1);
6928 q=(*mvg_info->primitive_info)+mvg_info->offset;
6929 if (TracePoint(q,point) == MagickFalse)
6930 return(-1);
6931 mvg_info->offset+=(ssize_t) q->coordinates;
6932 q+=(ptrdiff_t) q->coordinates;
6933 while (isspace((int) ((unsigned char) *p)) != 0)
6934 p++;
6935 if (*p == ',')
6936 p++;
6937 } while (IsPoint(p) != MagickFalse);
6938 break;
6939 }
6940 case 'q':
6941 case 'Q':
6942 {
6943 /*
6944 Quadratic Bézier curve.
6945 */
6946 do
6947 {
6948 points[0]=point;
6949 for (i=1; i < 3; i++)
6950 {
6951 (void) GetNextToken(p,&p,MagickPathExtent,token);
6952 if (*token == ',')
6953 (void) GetNextToken(p,&p,MagickPathExtent,token);
6954 x=GetDrawValue(token,&next_token);
6955 if (token == next_token)
6956 ThrowPointExpectedException(token,exception);
6957 (void) GetNextToken(p,&p,MagickPathExtent,token);
6958 if (*token == ',')
6959 (void) GetNextToken(p,&p,MagickPathExtent,token);
6960 y=GetDrawValue(token,&next_token);
6961 if (token == next_token)
6962 ThrowPointExpectedException(token,exception);
6963 if (*p == ',')
6964 p++;
6965 end.x=(double) (attribute == (int) 'Q' ? x : point.x+x);
6966 end.y=(double) (attribute == (int) 'Q' ? y : point.y+y);
6967 points[i]=end;
6968 }
6969 for (i=0; i < 3; i++)
6970 (q+i)->point=points[i];
6971 if (TraceBezier(mvg_info,3) == MagickFalse)
6972 return(-1);
6973 q=(*mvg_info->primitive_info)+mvg_info->offset;
6974 mvg_info->offset+=(ssize_t) q->coordinates;
6975 q+=(ptrdiff_t) q->coordinates;
6976 point=end;
6977 while (isspace((int) ((unsigned char) *p)) != 0)
6978 p++;
6979 if (*p == ',')
6980 p++;
6981 } while (IsPoint(p) != MagickFalse);
6982 break;
6983 }
6984 case 's':
6985 case 'S':
6986 {
6987 /*
6988 Cubic Bézier curve.
6989 */
6990 do
6991 {
6992 points[0]=points[3];
6993 points[1].x=2.0*points[3].x-points[2].x;
6994 points[1].y=2.0*points[3].y-points[2].y;
6995 for (i=2; i < 4; i++)
6996 {
6997 (void) GetNextToken(p,&p,MagickPathExtent,token);
6998 if (*token == ',')
6999 (void) GetNextToken(p,&p,MagickPathExtent,token);
7000 x=GetDrawValue(token,&next_token);
7001 if (token == next_token)
7002 ThrowPointExpectedException(token,exception);
7003 (void) GetNextToken(p,&p,MagickPathExtent,token);
7004 if (*token == ',')
7005 (void) GetNextToken(p,&p,MagickPathExtent,token);
7006 y=GetDrawValue(token,&next_token);
7007 if (token == next_token)
7008 ThrowPointExpectedException(token,exception);
7009 if (*p == ',')
7010 p++;
7011 end.x=(double) (attribute == (int) 'S' ? x : point.x+x);
7012 end.y=(double) (attribute == (int) 'S' ? y : point.y+y);
7013 points[i]=end;
7014 }
7015 if (strchr("CcSs",last_attribute) == (char *) NULL)
7016 {
7017 points[0]=point;
7018 points[1]=point;
7019 }
7020 for (i=0; i < 4; i++)
7021 (q+i)->point=points[i];
7022 if (TraceBezier(mvg_info,4) == MagickFalse)
7023 return(-1);
7024 q=(*mvg_info->primitive_info)+mvg_info->offset;
7025 mvg_info->offset+=(ssize_t) q->coordinates;
7026 q+=(ptrdiff_t) q->coordinates;
7027 point=end;
7028 last_attribute=attribute;
7029 while (isspace((int) ((unsigned char) *p)) != 0)
7030 p++;
7031 if (*p == ',')
7032 p++;
7033 } while (IsPoint(p) != MagickFalse);
7034 break;
7035 }
7036 case 't':
7037 case 'T':
7038 {
7039 /*
7040 Quadratic Bézier curve.
7041 */
7042 do
7043 {
7044 points[0]=points[2];
7045 points[1].x=2.0*points[2].x-points[1].x;
7046 points[1].y=2.0*points[2].y-points[1].y;
7047 for (i=2; i < 3; i++)
7048 {
7049 (void) GetNextToken(p,&p,MagickPathExtent,token);
7050 if (*token == ',')
7051 (void) GetNextToken(p,&p,MagickPathExtent,token);
7052 x=GetDrawValue(token,&next_token);
7053 if (token == next_token)
7054 ThrowPointExpectedException(token,exception);
7055 (void) GetNextToken(p,&p,MagickPathExtent,token);
7056 if (*token == ',')
7057 (void) GetNextToken(p,&p,MagickPathExtent,token);
7058 y=GetDrawValue(token,&next_token);
7059 if (token == next_token)
7060 ThrowPointExpectedException(token,exception);
7061 end.x=(double) (attribute == (int) 'T' ? x : point.x+x);
7062 end.y=(double) (attribute == (int) 'T' ? y : point.y+y);
7063 points[i]=end;
7064 }
7065 if (status == MagickFalse)
7066 break;
7067 if (strchr("QqTt",last_attribute) == (char *) NULL)
7068 {
7069 points[0]=point;
7070 points[1]=point;
7071 }
7072 for (i=0; i < 3; i++)
7073 (q+i)->point=points[i];
7074 if (TraceBezier(mvg_info,3) == MagickFalse)
7075 return(-1);
7076 q=(*mvg_info->primitive_info)+mvg_info->offset;
7077 mvg_info->offset+=(ssize_t) q->coordinates;
7078 q+=(ptrdiff_t) q->coordinates;
7079 point=end;
7080 last_attribute=attribute;
7081 while (isspace((int) ((unsigned char) *p)) != 0)
7082 p++;
7083 if (*p == ',')
7084 p++;
7085 } while (IsPoint(p) != MagickFalse);
7086 break;
7087 }
7088 case 'v':
7089 case 'V':
7090 {
7091 /*
7092 Line to.
7093 */
7094 do
7095 {
7096 (void) GetNextToken(p,&p,MagickPathExtent,token);
7097 if (*token == ',')
7098 (void) GetNextToken(p,&p,MagickPathExtent,token);
7099 y=GetDrawValue(token,&next_token);
7100 if (token == next_token)
7101 ThrowPointExpectedException(token,exception);
7102 point.y=(double) (attribute == (int) 'V' ? y : point.y+y);
7103 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7104 return(-1);
7105 q=(*mvg_info->primitive_info)+mvg_info->offset;
7106 if (TracePoint(q,point) == MagickFalse)
7107 return(-1);
7108 mvg_info->offset+=(ssize_t) q->coordinates;
7109 q+=(ptrdiff_t) q->coordinates;
7110 while (isspace((int) ((unsigned char) *p)) != 0)
7111 p++;
7112 if (*p == ',')
7113 p++;
7114 } while (IsPoint(p) != MagickFalse);
7115 break;
7116 }
7117 case 'z':
7118 case 'Z':
7119 {
7120 /*
7121 Close path.
7122 */
7123 point=start;
7124 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7125 return(-1);
7126 q=(*mvg_info->primitive_info)+mvg_info->offset;
7127 if (TracePoint(q,point) == MagickFalse)
7128 return(-1);
7129 mvg_info->offset+=(ssize_t) q->coordinates;
7130 q+=(ptrdiff_t) q->coordinates;
7131 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
7132 primitive_info->coordinates=(size_t) (q-primitive_info);
7133 primitive_info->closed_subpath=MagickTrue;
7134 number_coordinates+=primitive_info->coordinates;
7135 primitive_info=q;
7136 subpath_offset=mvg_info->offset;
7137 z_count++;
7138 break;
7139 }
7140 default:
7141 {
7142 ThrowPointExpectedException(token,exception);
7143 break;
7144 }
7145 }
7146 }
7147 if (status == MagickFalse)
7148 return(-1);
7149 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
7150 primitive_info->coordinates=(size_t) (q-primitive_info);
7151 number_coordinates+=primitive_info->coordinates;
7152 for (i=0; i < (ssize_t) number_coordinates; i++)
7153 {
7154 q--;
7155 q->primitive=primitive_type;
7156 if (z_count > 1)
7157 q->method=FillToBorderMethod;
7158 }
7159 q=primitive_info;
7160 return((ssize_t) number_coordinates);
7161}
7162
7163static MagickBooleanType TraceRectangle(PrimitiveInfo *primitive_info,
7164 const PointInfo start,const PointInfo end)
7165{
7166 PointInfo
7167 point;
7168
7169 PrimitiveInfo
7170 *p;
7171
7172 ssize_t
7173 i;
7174
7175 if ((fabs(start.x-end.x) < MagickEpsilon) ||
7176 (fabs(start.y-end.y) < MagickEpsilon))
7177 {
7178 primitive_info->coordinates=0;
7179 return(MagickTrue);
7180 }
7181 p=primitive_info;
7182 if (TracePoint(p,start) == MagickFalse)
7183 return(MagickFalse);
7184 p+=(ptrdiff_t) p->coordinates;
7185 point.x=start.x;
7186 point.y=end.y;
7187 if (TracePoint(p,point) == MagickFalse)
7188 return(MagickFalse);
7189 p+=(ptrdiff_t) p->coordinates;
7190 if (TracePoint(p,end) == MagickFalse)
7191 return(MagickFalse);
7192 p+=(ptrdiff_t) p->coordinates;
7193 point.x=end.x;
7194 point.y=start.y;
7195 if (TracePoint(p,point) == MagickFalse)
7196 return(MagickFalse);
7197 p+=(ptrdiff_t) p->coordinates;
7198 if (TracePoint(p,start) == MagickFalse)
7199 return(MagickFalse);
7200 p+=(ptrdiff_t) p->coordinates;
7201 primitive_info->coordinates=(size_t) (p-primitive_info);
7202 primitive_info->closed_subpath=MagickTrue;
7203 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7204 {
7205 p->primitive=primitive_info->primitive;
7206 p--;
7207 }
7208 return(MagickTrue);
7209}
7210
7211static MagickBooleanType TraceRoundRectangle(MVGInfo *mvg_info,
7212 const PointInfo start,const PointInfo end,PointInfo arc)
7213{
7214 PointInfo
7215 degrees,
7216 point,
7217 segment;
7218
7219 PrimitiveInfo
7220 *primitive_info;
7221
7222 PrimitiveInfo
7223 *p;
7224
7225 ssize_t
7226 i;
7227
7228 ssize_t
7229 offset;
7230
7231 offset=mvg_info->offset;
7232 segment.x=fabs(end.x-start.x);
7233 segment.y=fabs(end.y-start.y);
7234 if ((segment.x < MagickEpsilon) || (segment.y < MagickEpsilon))
7235 {
7236 (*mvg_info->primitive_info+mvg_info->offset)->coordinates=0;
7237 return(MagickTrue);
7238 }
7239 if (arc.x > (0.5*segment.x))
7240 arc.x=0.5*segment.x;
7241 if (arc.y > (0.5*segment.y))
7242 arc.y=0.5*segment.y;
7243 point.x=start.x+segment.x-arc.x;
7244 point.y=start.y+arc.y;
7245 degrees.x=270.0;
7246 degrees.y=360.0;
7247 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7248 return(MagickFalse);
7249 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7250 mvg_info->offset+=(ssize_t) p->coordinates;
7251 point.x=start.x+segment.x-arc.x;
7252 point.y=start.y+segment.y-arc.y;
7253 degrees.x=0.0;
7254 degrees.y=90.0;
7255 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7256 return(MagickFalse);
7257 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7258 mvg_info->offset+=(ssize_t) p->coordinates;
7259 point.x=start.x+arc.x;
7260 point.y=start.y+segment.y-arc.y;
7261 degrees.x=90.0;
7262 degrees.y=180.0;
7263 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7264 return(MagickFalse);
7265 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7266 mvg_info->offset+=(ssize_t) p->coordinates;
7267 point.x=start.x+arc.x;
7268 point.y=start.y+arc.y;
7269 degrees.x=180.0;
7270 degrees.y=270.0;
7271 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7272 return(MagickFalse);
7273 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7274 mvg_info->offset+=(ssize_t) p->coordinates;
7275 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7276 return(MagickFalse);
7277 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7278 if (TracePoint(p,(*mvg_info->primitive_info+offset)->point) == MagickFalse)
7279 return(MagickFalse);
7280 p+=(ptrdiff_t) p->coordinates;
7281 mvg_info->offset=offset;
7282 primitive_info=(*mvg_info->primitive_info)+offset;
7283 primitive_info->coordinates=(size_t) (p-primitive_info);
7284 primitive_info->closed_subpath=MagickTrue;
7285 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7286 {
7287 p->primitive=primitive_info->primitive;
7288 p--;
7289 }
7290 return(MagickTrue);
7291}
7292
7293static MagickBooleanType TraceSquareLinecap(PrimitiveInfo *primitive_info,
7294 const size_t number_vertices,const double offset)
7295{
7296 double
7297 distance;
7298
7299 double
7300 dx,
7301 dy;
7302
7303 ssize_t
7304 i;
7305
7306 ssize_t
7307 j;
7308
7309 dx=0.0;
7310 dy=0.0;
7311 for (i=1; i < (ssize_t) number_vertices; i++)
7312 {
7313 dx=primitive_info[0].point.x-primitive_info[i].point.x;
7314 dy=primitive_info[0].point.y-primitive_info[i].point.y;
7315 if ((fabs((double) dx) >= MagickEpsilon) ||
7316 (fabs((double) dy) >= MagickEpsilon))
7317 break;
7318 }
7319 if (i == (ssize_t) number_vertices)
7320 i=(ssize_t) number_vertices-1L;
7321 distance=hypot((double) dx,(double) dy);
7322 primitive_info[0].point.x=(double) (primitive_info[i].point.x+
7323 dx*(distance+offset)/distance);
7324 primitive_info[0].point.y=(double) (primitive_info[i].point.y+
7325 dy*(distance+offset)/distance);
7326 for (j=(ssize_t) number_vertices-2; j >= 0; j--)
7327 {
7328 dx=primitive_info[number_vertices-1].point.x-primitive_info[j].point.x;
7329 dy=primitive_info[number_vertices-1].point.y-primitive_info[j].point.y;
7330 if ((fabs((double) dx) >= MagickEpsilon) ||
7331 (fabs((double) dy) >= MagickEpsilon))
7332 break;
7333 }
7334 distance=hypot((double) dx,(double) dy);
7335 primitive_info[number_vertices-1].point.x=(double) (primitive_info[j].point.x+
7336 dx*(distance+offset)/distance);
7337 primitive_info[number_vertices-1].point.y=(double) (primitive_info[j].point.y+
7338 dy*(distance+offset)/distance);
7339 return(MagickTrue);
7340}
7341
7342static PrimitiveInfo *TraceStrokePolygon(const DrawInfo *draw_info,
7343 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
7344{
7345#define MaxStrokePad (6*BezierQuantum+360)
7346#define CheckPathExtent(pad_p,pad_q) \
7347{ \
7348 if ((pad_p) > MaxBezierCoordinates) \
7349 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7350 else \
7351 if ((p+(ptrdiff_t) (pad_p)) >= (ssize_t) extent_p) \
7352 { \
7353 if (~extent_p < (pad_p)) \
7354 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7355 else \
7356 { \
7357 extent_p+=(pad_p); \
7358 stroke_p=(PointInfo *) ResizeQuantumMemory(stroke_p,extent_p+ \
7359 MaxStrokePad,sizeof(*stroke_p)); \
7360 } \
7361 } \
7362 if ((pad_q) > MaxBezierCoordinates) \
7363 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7364 else \
7365 if ((q+(ptrdiff_t) (pad_q)) >= (ssize_t) extent_q) \
7366 { \
7367 if (~extent_q < (pad_q)) \
7368 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7369 else \
7370 { \
7371 extent_q+=(pad_q); \
7372 stroke_q=(PointInfo *) ResizeQuantumMemory(stroke_q,extent_q+ \
7373 MaxStrokePad,sizeof(*stroke_q)); \
7374 } \
7375 } \
7376 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL)) \
7377 { \
7378 if (stroke_p != (PointInfo *) NULL) \
7379 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7380 if (stroke_q != (PointInfo *) NULL) \
7381 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7382 polygon_primitive=(PrimitiveInfo *) \
7383 RelinquishMagickMemory(polygon_primitive); \
7384 (void) ThrowMagickException(exception,GetMagickModule(), \
7385 ResourceLimitError,"MemoryAllocationFailed","`%s'",""); \
7386 return((PrimitiveInfo *) NULL); \
7387 } \
7388}
7389
7390 typedef struct _StrokeSegment
7391 {
7392 double
7393 p,
7394 q;
7395 } StrokeSegment;
7396
7397 double
7398 delta_theta,
7399 dot_product,
7400 mid,
7401 miterlimit;
7402
7403 MagickBooleanType
7404 closed_path;
7405
7406 PointInfo
7407 box_p[5],
7408 box_q[5],
7409 center,
7410 offset,
7411 *stroke_p,
7412 *stroke_q;
7413
7414 PrimitiveInfo
7415 *polygon_primitive,
7416 *stroke_polygon;
7417
7418 ssize_t
7419 i;
7420
7421 size_t
7422 arc_segments,
7423 extent_p,
7424 extent_q,
7425 number_vertices;
7426
7427 ssize_t
7428 j,
7429 n,
7430 p,
7431 q;
7432
7433 StrokeSegment
7434 dx = {0.0, 0.0},
7435 dy = {0.0, 0.0},
7436 inverse_slope = {0.0, 0.0},
7437 slope = {0.0, 0.0},
7438 theta = {0.0, 0.0};
7439
7440 /*
7441 Allocate paths.
7442 */
7443 number_vertices=primitive_info->coordinates;
7444 polygon_primitive=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7445 number_vertices+2UL,sizeof(*polygon_primitive));
7446 if (polygon_primitive == (PrimitiveInfo *) NULL)
7447 {
7448 (void) ThrowMagickException(exception,GetMagickModule(),
7449 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7450 return((PrimitiveInfo *) NULL);
7451 }
7452 (void) memcpy(polygon_primitive,primitive_info,(size_t) number_vertices*
7453 sizeof(*polygon_primitive));
7454 offset.x=primitive_info[number_vertices-1].point.x-primitive_info[0].point.x;
7455 offset.y=primitive_info[number_vertices-1].point.y-primitive_info[0].point.y;
7456 closed_path=(fabs(offset.x) < MagickEpsilon) &&
7457 (fabs(offset.y) < MagickEpsilon) ? MagickTrue : MagickFalse;
7458 if ((draw_info->linejoin == RoundJoin) ||
7459 ((draw_info->linejoin == MiterJoin) && (closed_path != MagickFalse)))
7460 {
7461 polygon_primitive[number_vertices]=primitive_info[1];
7462 number_vertices++;
7463 }
7464 polygon_primitive[number_vertices].primitive=UndefinedPrimitive;
7465 /*
7466 Compute the slope for the first line segment, p.
7467 */
7468 closed_path=primitive_info[0].closed_subpath;
7469 dx.p=0.0;
7470 dy.p=0.0;
7471 for (n=1; n < (ssize_t) number_vertices; n++)
7472 {
7473 dx.p=polygon_primitive[n].point.x-polygon_primitive[0].point.x;
7474 dy.p=polygon_primitive[n].point.y-polygon_primitive[0].point.y;
7475 if ((fabs(dx.p) >= MagickEpsilon) || (fabs(dy.p) >= MagickEpsilon))
7476 break;
7477 }
7478 if (n == (ssize_t) number_vertices)
7479 {
7480 if ((draw_info->linecap != RoundCap) || (closed_path != MagickFalse))
7481 {
7482 /*
7483 Zero length subpath.
7484 */
7485 stroke_polygon=(PrimitiveInfo *) AcquireCriticalMemory(
7486 sizeof(*stroke_polygon));
7487 stroke_polygon[0]=polygon_primitive[0];
7488 stroke_polygon[0].coordinates=0;
7489 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7490 polygon_primitive);
7491 return(stroke_polygon);
7492 }
7493 n=(ssize_t) number_vertices-1L;
7494 }
7495 extent_p=2*number_vertices;
7496 extent_q=2*number_vertices;
7497 stroke_p=(PointInfo *) AcquireQuantumMemory((size_t) extent_p+MaxStrokePad,
7498 sizeof(*stroke_p));
7499 stroke_q=(PointInfo *) AcquireQuantumMemory((size_t) extent_q+MaxStrokePad,
7500 sizeof(*stroke_q));
7501 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL))
7502 {
7503 if (stroke_p != (PointInfo *) NULL)
7504 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7505 if (stroke_q != (PointInfo *) NULL)
7506 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7507 polygon_primitive=(PrimitiveInfo *)
7508 RelinquishMagickMemory(polygon_primitive);
7509 (void) ThrowMagickException(exception,GetMagickModule(),
7510 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7511 return((PrimitiveInfo *) NULL);
7512 }
7513 slope.p=0.0;
7514 inverse_slope.p=0.0;
7515 if (fabs(dx.p) < MagickEpsilon)
7516 {
7517 if (dx.p >= 0.0)
7518 slope.p=dy.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7519 else
7520 slope.p=dy.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7521 }
7522 else
7523 if (fabs(dy.p) < MagickEpsilon)
7524 {
7525 if (dy.p >= 0.0)
7526 inverse_slope.p=dx.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7527 else
7528 inverse_slope.p=dx.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7529 }
7530 else
7531 {
7532 slope.p=dy.p/dx.p;
7533 inverse_slope.p=(-1.0*MagickSafeReciprocal(slope.p));
7534 }
7535 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
7536 miterlimit=(double) (draw_info->miterlimit*draw_info->miterlimit*mid*mid);
7537 if ((draw_info->linecap == SquareCap) && (closed_path == MagickFalse))
7538 (void) TraceSquareLinecap(polygon_primitive,number_vertices,mid);
7539 offset.x=sqrt((double) (mid*mid/(inverse_slope.p*inverse_slope.p+1.0)));
7540 offset.y=(double) (offset.x*inverse_slope.p);
7541 if ((dy.p*offset.x-dx.p*offset.y) > 0.0)
7542 {
7543 box_p[0].x=polygon_primitive[0].point.x-offset.x;
7544 box_p[0].y=polygon_primitive[0].point.y-offset.x*inverse_slope.p;
7545 box_p[1].x=polygon_primitive[n].point.x-offset.x;
7546 box_p[1].y=polygon_primitive[n].point.y-offset.x*inverse_slope.p;
7547 box_q[0].x=polygon_primitive[0].point.x+offset.x;
7548 box_q[0].y=polygon_primitive[0].point.y+offset.x*inverse_slope.p;
7549 box_q[1].x=polygon_primitive[n].point.x+offset.x;
7550 box_q[1].y=polygon_primitive[n].point.y+offset.x*inverse_slope.p;
7551 }
7552 else
7553 {
7554 box_p[0].x=polygon_primitive[0].point.x+offset.x;
7555 box_p[0].y=polygon_primitive[0].point.y+offset.y;
7556 box_p[1].x=polygon_primitive[n].point.x+offset.x;
7557 box_p[1].y=polygon_primitive[n].point.y+offset.y;
7558 box_q[0].x=polygon_primitive[0].point.x-offset.x;
7559 box_q[0].y=polygon_primitive[0].point.y-offset.y;
7560 box_q[1].x=polygon_primitive[n].point.x-offset.x;
7561 box_q[1].y=polygon_primitive[n].point.y-offset.y;
7562 }
7563 /*
7564 Create strokes for the line join attribute: bevel, miter, round.
7565 */
7566 p=0;
7567 q=0;
7568 stroke_q[p++]=box_q[0];
7569 stroke_p[q++]=box_p[0];
7570 for (i=(ssize_t) n+1; i < (ssize_t) number_vertices; i++)
7571 {
7572 /*
7573 Compute the slope for this line segment, q.
7574 */
7575 dx.q=polygon_primitive[i].point.x-polygon_primitive[n].point.x;
7576 dy.q=polygon_primitive[i].point.y-polygon_primitive[n].point.y;
7577 dot_product=dx.q*dx.q+dy.q*dy.q;
7578 if (dot_product < 0.25)
7579 continue;
7580 slope.q=0.0;
7581 inverse_slope.q=0.0;
7582 if (fabs(dx.q) < MagickEpsilon)
7583 {
7584 if (dx.q >= 0.0)
7585 slope.q=dy.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7586 else
7587 slope.q=dy.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7588 }
7589 else
7590 if (fabs(dy.q) < MagickEpsilon)
7591 {
7592 if (dy.q >= 0.0)
7593 inverse_slope.q=dx.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7594 else
7595 inverse_slope.q=dx.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7596 }
7597 else
7598 {
7599 slope.q=dy.q/dx.q;
7600 inverse_slope.q=(-1.0*MagickSafeReciprocal(slope.q));
7601 }
7602 offset.x=sqrt((double) (mid*mid/(inverse_slope.q*inverse_slope.q+1.0)));
7603 offset.y=(double) (offset.x*inverse_slope.q);
7604 dot_product=dy.q*offset.x-dx.q*offset.y;
7605 if (dot_product > 0.0)
7606 {
7607 box_p[2].x=polygon_primitive[n].point.x-offset.x;
7608 box_p[2].y=polygon_primitive[n].point.y-offset.y;
7609 box_p[3].x=polygon_primitive[i].point.x-offset.x;
7610 box_p[3].y=polygon_primitive[i].point.y-offset.y;
7611 box_q[2].x=polygon_primitive[n].point.x+offset.x;
7612 box_q[2].y=polygon_primitive[n].point.y+offset.y;
7613 box_q[3].x=polygon_primitive[i].point.x+offset.x;
7614 box_q[3].y=polygon_primitive[i].point.y+offset.y;
7615 }
7616 else
7617 {
7618 box_p[2].x=polygon_primitive[n].point.x+offset.x;
7619 box_p[2].y=polygon_primitive[n].point.y+offset.y;
7620 box_p[3].x=polygon_primitive[i].point.x+offset.x;
7621 box_p[3].y=polygon_primitive[i].point.y+offset.y;
7622 box_q[2].x=polygon_primitive[n].point.x-offset.x;
7623 box_q[2].y=polygon_primitive[n].point.y-offset.y;
7624 box_q[3].x=polygon_primitive[i].point.x-offset.x;
7625 box_q[3].y=polygon_primitive[i].point.y-offset.y;
7626 }
7627 if (fabs((double) (slope.p-slope.q)) < MagickEpsilon)
7628 {
7629 box_p[4]=box_p[1];
7630 box_q[4]=box_q[1];
7631 }
7632 else
7633 {
7634 box_p[4].x=(double) ((slope.p*box_p[0].x-box_p[0].y-slope.q*box_p[3].x+
7635 box_p[3].y)/(slope.p-slope.q));
7636 box_p[4].y=(double) (slope.p*(box_p[4].x-box_p[0].x)+box_p[0].y);
7637 box_q[4].x=(double) ((slope.p*box_q[0].x-box_q[0].y-slope.q*box_q[3].x+
7638 box_q[3].y)/(slope.p-slope.q));
7639 box_q[4].y=(double) (slope.p*(box_q[4].x-box_q[0].x)+box_q[0].y);
7640 }
7641 DisableMSCWarning(4127)
7642 CheckPathExtent(MaxStrokePad,MaxStrokePad);
7643 RestoreMSCWarning
7644 dot_product=dx.q*dy.p-dx.p*dy.q;
7645 if (dot_product <= 0.0)
7646 switch (draw_info->linejoin)
7647 {
7648 case BevelJoin:
7649 {
7650 stroke_q[q++]=box_q[1];
7651 stroke_q[q++]=box_q[2];
7652 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7653 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7654 if (dot_product <= miterlimit)
7655 stroke_p[p++]=box_p[4];
7656 else
7657 {
7658 stroke_p[p++]=box_p[1];
7659 stroke_p[p++]=box_p[2];
7660 }
7661 break;
7662 }
7663 case MiterJoin:
7664 {
7665 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7666 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7667 if (dot_product <= miterlimit)
7668 {
7669 stroke_q[q++]=box_q[4];
7670 stroke_p[p++]=box_p[4];
7671 }
7672 else
7673 {
7674 stroke_q[q++]=box_q[1];
7675 stroke_q[q++]=box_q[2];
7676 stroke_p[p++]=box_p[1];
7677 stroke_p[p++]=box_p[2];
7678 }
7679 break;
7680 }
7681 case RoundJoin:
7682 {
7683 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7684 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7685 if (dot_product <= miterlimit)
7686 stroke_p[p++]=box_p[4];
7687 else
7688 {
7689 stroke_p[p++]=box_p[1];
7690 stroke_p[p++]=box_p[2];
7691 }
7692 center=polygon_primitive[n].point;
7693 theta.p=atan2(box_q[1].y-center.y,box_q[1].x-center.x);
7694 theta.q=atan2(box_q[2].y-center.y,box_q[2].x-center.x);
7695 if (theta.q < theta.p)
7696 theta.q+=2.0*MagickPI;
7697 arc_segments=(size_t) CastDoubleToSsizeT(ceil((double) ((theta.q-
7698 theta.p)/(2.0*sqrt(MagickSafeReciprocal(mid))))));
7699 DisableMSCWarning(4127)
7700 CheckPathExtent(MaxStrokePad,arc_segments+MaxStrokePad);
7701 RestoreMSCWarning
7702 stroke_q[q].x=box_q[1].x;
7703 stroke_q[q].y=box_q[1].y;
7704 q++;
7705 for (j=1; j < (ssize_t) arc_segments; j++)
7706 {
7707 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7708 stroke_q[q].x=(double) (center.x+mid*cos(fmod((double)
7709 (theta.p+delta_theta),DegreesToRadians(360.0))));
7710 stroke_q[q].y=(double) (center.y+mid*sin(fmod((double)
7711 (theta.p+delta_theta),DegreesToRadians(360.0))));
7712 q++;
7713 }
7714 stroke_q[q++]=box_q[2];
7715 break;
7716 }
7717 default:
7718 break;
7719 }
7720 else
7721 switch (draw_info->linejoin)
7722 {
7723 case BevelJoin:
7724 {
7725 stroke_p[p++]=box_p[1];
7726 stroke_p[p++]=box_p[2];
7727 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7728 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7729 if (dot_product <= miterlimit)
7730 stroke_q[q++]=box_q[4];
7731 else
7732 {
7733 stroke_q[q++]=box_q[1];
7734 stroke_q[q++]=box_q[2];
7735 }
7736 break;
7737 }
7738 case MiterJoin:
7739 {
7740 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7741 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7742 if (dot_product <= miterlimit)
7743 {
7744 stroke_q[q++]=box_q[4];
7745 stroke_p[p++]=box_p[4];
7746 }
7747 else
7748 {
7749 stroke_q[q++]=box_q[1];
7750 stroke_q[q++]=box_q[2];
7751 stroke_p[p++]=box_p[1];
7752 stroke_p[p++]=box_p[2];
7753 }
7754 break;
7755 }
7756 case RoundJoin:
7757 {
7758 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7759 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7760 if (dot_product <= miterlimit)
7761 stroke_q[q++]=box_q[4];
7762 else
7763 {
7764 stroke_q[q++]=box_q[1];
7765 stroke_q[q++]=box_q[2];
7766 }
7767 center=polygon_primitive[n].point;
7768 theta.p=atan2(box_p[1].y-center.y,box_p[1].x-center.x);
7769 theta.q=atan2(box_p[2].y-center.y,box_p[2].x-center.x);
7770 if (theta.p < theta.q)
7771 theta.p+=2.0*MagickPI;
7772 arc_segments=(size_t) CastDoubleToSsizeT(ceil((double) ((theta.p-
7773 theta.q)/(2.0*sqrt((double) (MagickSafeReciprocal(mid)))))));
7774 DisableMSCWarning(4127)
7775 CheckPathExtent(arc_segments+MaxStrokePad,MaxStrokePad);
7776 RestoreMSCWarning
7777 stroke_p[p++]=box_p[1];
7778 for (j=1; j < (ssize_t) arc_segments; j++)
7779 {
7780 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7781 stroke_p[p].x=(double) (center.x+mid*cos(fmod((double)
7782 (theta.p+delta_theta),DegreesToRadians(360.0))));
7783 stroke_p[p].y=(double) (center.y+mid*sin(fmod((double)
7784 (theta.p+delta_theta),DegreesToRadians(360.0))));
7785 p++;
7786 }
7787 stroke_p[p++]=box_p[2];
7788 break;
7789 }
7790 default:
7791 break;
7792 }
7793 slope.p=slope.q;
7794 inverse_slope.p=inverse_slope.q;
7795 box_p[0]=box_p[2];
7796 box_p[1]=box_p[3];
7797 box_q[0]=box_q[2];
7798 box_q[1]=box_q[3];
7799 dx.p=dx.q;
7800 dy.p=dy.q;
7801 n=i;
7802 }
7803 stroke_p[p++]=box_p[1];
7804 stroke_q[q++]=box_q[1];
7805 /*
7806 Trace stroked polygon.
7807 */
7808 stroke_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7809 (p+q+2L),(size_t) (closed_path+2L)*sizeof(*stroke_polygon));
7810 if (stroke_polygon == (PrimitiveInfo *) NULL)
7811 {
7812 (void) ThrowMagickException(exception,GetMagickModule(),
7813 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7814 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7815 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7816 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7817 polygon_primitive);
7818 return(stroke_polygon);
7819 }
7820 for (i=0; i < (ssize_t) p; i++)
7821 {
7822 stroke_polygon[i]=polygon_primitive[0];
7823 stroke_polygon[i].point=stroke_p[i];
7824 }
7825 if (closed_path != MagickFalse)
7826 {
7827 stroke_polygon[i]=polygon_primitive[0];
7828 stroke_polygon[i].point=stroke_polygon[0].point;
7829 i++;
7830 }
7831 for ( ; i < (ssize_t) (p+q+closed_path); i++)
7832 {
7833 stroke_polygon[i]=polygon_primitive[0];
7834 stroke_polygon[i].point=stroke_q[p+q+closed_path-(i+1)];
7835 }
7836 if (closed_path != MagickFalse)
7837 {
7838 stroke_polygon[i]=polygon_primitive[0];
7839 stroke_polygon[i].point=stroke_polygon[p+closed_path].point;
7840 i++;
7841 }
7842 stroke_polygon[i]=polygon_primitive[0];
7843 stroke_polygon[i].point=stroke_polygon[0].point;
7844 i++;
7845 stroke_polygon[i].primitive=UndefinedPrimitive;
7846 stroke_polygon[0].coordinates=(size_t) (p+q+2*closed_path+1);
7847 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7848 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7849 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(polygon_primitive);
7850 return(stroke_polygon);
7851}
_EdgeInfo
Definition draw.c:109
_ElementInfo
Definition draw.c:133
_MVGInfo
Definition draw.c:143
_PathInfo
Definition draw.c:179
_PolygonInfo
Definition draw.c:161