MagickCore 7.1.2
Convert, Edit, Or Compose Bitmap Images
Loading...
Searching...
No Matches
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/license/ %
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) GetMaxMemoryRequest()) || (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 status=MagickFalse;
3509 break;
3510 }
3511 graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,
3512 graphic_context[n-1]);
3513 if (*q == '"')
3514 {
3515 (void) GetNextToken(q,&q,extent,token);
3516 (void) CloneString(&graphic_context[n]->id,token);
3517 }
3518 if (n > MagickMaxRecursionDepth)
3519 {
3520 (void) ThrowMagickException(exception,GetMagickModule(),
3521 DrawError,"VectorGraphicsNestedTooDeeply","`%s'",
3522 image->filename);
3523 status=MagickFalse;
3524 }
3525 break;
3526 }
3527 if (LocaleCompare("mask",token) == 0)
3528 {
3529 (void) GetNextToken(q,&q,extent,token);
3530 break;
3531 }
3532 if (LocaleCompare("pattern",token) == 0)
3533 {
3534 char
3535 key[2*MagickPathExtent],
3536 name[MagickPathExtent];
3537
3538 RectangleInfo
3539 region;
3540
3541 (void) GetNextToken(q,&q,extent,token);
3542 (void) CopyMagickString(name,token,MagickPathExtent);
3543 (void) GetNextToken(q,&q,extent,token);
3544 region.x=CastDoubleToSsizeT(ceil(GetDrawValue(token,
3545 &next_token)-0.5));
3546 if (token == next_token)
3547 ThrowPointExpectedException(token,exception);
3548 (void) GetNextToken(q,&q,extent,token);
3549 if (*token == ',')
3550 (void) GetNextToken(q,&q,extent,token);
3551 region.y=CastDoubleToSsizeT(ceil(GetDrawValue(token,
3552 &next_token)-0.5));
3553 if (token == next_token)
3554 ThrowPointExpectedException(token,exception);
3555 (void) GetNextToken(q,&q,extent,token);
3556 if (*token == ',')
3557 (void) GetNextToken(q,&q,extent,token);
3558 region.width=CastDoubleToSizeT(floor(GetDrawValue(token,
3559 &next_token)+0.5));
3560 if (token == next_token)
3561 ThrowPointExpectedException(token,exception);
3562 (void) GetNextToken(q,&q,extent,token);
3563 if (*token == ',')
3564 (void) GetNextToken(q,&q,extent,token);
3565 region.height=CastDoubleToSizeT(GetDrawValue(token,
3566 &next_token)+0.5);
3567 if (token == next_token)
3568 ThrowPointExpectedException(token,exception);
3569 for (p=q; *q != '\0'; )
3570 {
3571 if (GetNextToken(q,&q,extent,token) < 1)
3572 break;
3573 if (LocaleCompare(token,"pop") != 0)
3574 continue;
3575 (void) GetNextToken(q,(const char **) NULL,extent,token);
3576 if (LocaleCompare(token,"pattern") != 0)
3577 continue;
3578 break;
3579 }
3580 if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3581 {
3582 status=MagickFalse;
3583 break;
3584 }
3585 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3586 (void) FormatLocaleString(key,MagickPathExtent,"%s",name);
3587 (void) SetImageArtifact(image,key,token);
3588 (void) FormatLocaleString(key,MagickPathExtent,"%s-geometry",
3589 name);
3590 (void) FormatLocaleString(geometry,MagickPathExtent,
3591 "%.20gx%.20g%+.20g%+.20g",(double) region.width,(double)
3592 region.height,(double) region.x,(double) region.y);
3593 (void) SetImageArtifact(image,key,geometry);
3594 (void) GetNextToken(q,&q,extent,token);
3595 break;
3596 }
3597 if (LocaleCompare("symbol",token) == 0)
3598 {
3599 symbolDepth++;
3600 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3601 MagickTrue;
3602 break;
3603 }
3604 status=MagickFalse;
3605 break;
3606 }
3607 status=MagickFalse;
3608 break;
3609 }
3610 case 'r':
3611 case 'R':
3612 {
3613 if (LocaleCompare("rectangle",keyword) == 0)
3614 {
3615 primitive_type=RectanglePrimitive;
3616 break;
3617 }
3618 if (LocaleCompare("rotate",keyword) == 0)
3619 {
3620 (void) GetNextToken(q,&q,extent,token);
3621 angle=GetDrawValue(token,&next_token);
3622 if (token == next_token)
3623 ThrowPointExpectedException(token,exception);
3624 affine.sx=cos(DegreesToRadians(fmod((double) angle,360.0)));
3625 affine.rx=sin(DegreesToRadians(fmod((double) angle,360.0)));
3626 affine.ry=(-sin(DegreesToRadians(fmod((double) angle,360.0))));
3627 affine.sy=cos(DegreesToRadians(fmod((double) angle,360.0)));
3628 break;
3629 }
3630 if (LocaleCompare("roundRectangle",keyword) == 0)
3631 {
3632 primitive_type=RoundRectanglePrimitive;
3633 break;
3634 }
3635 status=MagickFalse;
3636 break;
3637 }
3638 case 's':
3639 case 'S':
3640 {
3641 if (LocaleCompare("scale",keyword) == 0)
3642 {
3643 (void) GetNextToken(q,&q,extent,token);
3644 affine.sx=GetDrawValue(token,&next_token);
3645 if (token == next_token)
3646 ThrowPointExpectedException(token,exception);
3647 (void) GetNextToken(q,&q,extent,token);
3648 if (*token == ',')
3649 (void) GetNextToken(q,&q,extent,token);
3650 affine.sy=GetDrawValue(token,&next_token);
3651 if (token == next_token)
3652 ThrowPointExpectedException(token,exception);
3653 break;
3654 }
3655 if (LocaleCompare("skewX",keyword) == 0)
3656 {
3657 (void) GetNextToken(q,&q,extent,token);
3658 angle=GetDrawValue(token,&next_token);
3659 if (token == next_token)
3660 ThrowPointExpectedException(token,exception);
3661 affine.ry=sin(DegreesToRadians(angle));
3662 break;
3663 }
3664 if (LocaleCompare("skewY",keyword) == 0)
3665 {
3666 (void) GetNextToken(q,&q,extent,token);
3667 angle=GetDrawValue(token,&next_token);
3668 if (token == next_token)
3669 ThrowPointExpectedException(token,exception);
3670 affine.rx=(-tan(DegreesToRadians(angle)/2.0));
3671 break;
3672 }
3673 if (LocaleCompare("stop-color",keyword) == 0)
3674 {
3675 PixelInfo
3676 stop_color;
3677
3678 number_stops++;
3679 if (number_stops == 1)
3680 stops=(StopInfo *) AcquireQuantumMemory(2,sizeof(*stops));
3681 else
3682 if (number_stops > 2)
3683 stops=(StopInfo *) ResizeQuantumMemory(stops,number_stops,
3684 sizeof(*stops));
3685 if (stops == (StopInfo *) NULL)
3686 {
3687 (void) ThrowMagickException(exception,GetMagickModule(),
3688 ResourceLimitError,"MemoryAllocationFailed","`%s'",
3689 image->filename);
3690 status=MagickFalse;
3691 break;
3692 }
3693 (void) GetNextToken(q,&q,extent,token);
3694 status&=(MagickStatusType) QueryColorCompliance(token,AllCompliance,
3695 &stop_color,exception);
3696 stops[number_stops-1].color=stop_color;
3697 (void) GetNextToken(q,&q,extent,token);
3698 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3699 stops[number_stops-1].offset=factor*GetDrawValue(token,
3700 &next_token);
3701 if (token == next_token)
3702 ThrowPointExpectedException(token,exception);
3703 break;
3704 }
3705 if (LocaleCompare("stroke",keyword) == 0)
3706 {
3707 const char
3708 *mvg_class;
3709
3710 (void) GetNextToken(q,&q,extent,token);
3711 if (graphic_context[n]->clip_path != MagickFalse)
3712 break;
3713 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
3714 if (mvg_class != (const char *) NULL)
3715 {
3716 (void) DrawPatternPath(image,draw_info,mvg_class,
3717 &graphic_context[n]->stroke_pattern,exception);
3718 break;
3719 }
3720 (void) FormatLocaleString(pattern,MagickPathExtent,"%s",token);
3721 if (GetImageArtifact(image,pattern) != (const char *) NULL)
3722 {
3723 (void) DrawPatternPath(image,draw_info,token,
3724 &graphic_context[n]->stroke_pattern,exception);
3725 break;
3726 }
3727 status&=(MagickStatusType) QueryColorCompliance(token,AllCompliance,
3728 &graphic_context[n]->stroke,exception);
3729 if (graphic_context[n]->stroke_alpha != (double) OpaqueAlpha)
3730 graphic_context[n]->stroke.alpha=
3731 graphic_context[n]->stroke_alpha;
3732 break;
3733 }
3734 if (LocaleCompare("stroke-antialias",keyword) == 0)
3735 {
3736 (void) GetNextToken(q,&q,extent,token);
3737 graphic_context[n]->stroke_antialias=StringToLong(token) != 0 ?
3738 MagickTrue : MagickFalse;
3739 break;
3740 }
3741 if (LocaleCompare("stroke-dasharray",keyword) == 0)
3742 {
3743 if (graphic_context[n]->dash_pattern != (double *) NULL)
3744 graphic_context[n]->dash_pattern=(double *)
3745 RelinquishMagickMemory(graphic_context[n]->dash_pattern);
3746 if (IsPoint(q) != MagickFalse)
3747 {
3748 const char
3749 *r;
3750
3751 r=q;
3752 (void) GetNextToken(r,&r,extent,token);
3753 if (*token == ',')
3754 (void) GetNextToken(r,&r,extent,token);
3755 for (x=0; IsPoint(token) != MagickFalse; x++)
3756 {
3757 (void) GetNextToken(r,&r,extent,token);
3758 if (*token == ',')
3759 (void) GetNextToken(r,&r,extent,token);
3760 }
3761 graphic_context[n]->dash_pattern=(double *)
3762 AcquireQuantumMemory((size_t) (2*x+2),
3763 sizeof(*graphic_context[n]->dash_pattern));
3764 if (graphic_context[n]->dash_pattern == (double *) NULL)
3765 {
3766 (void) ThrowMagickException(exception,GetMagickModule(),
3767 ResourceLimitError,"MemoryAllocationFailed","`%s'",
3768 image->filename);
3769 status=MagickFalse;
3770 break;
3771 }
3772 (void) memset(graphic_context[n]->dash_pattern,0,(size_t)
3773 (2*x+2)*sizeof(*graphic_context[n]->dash_pattern));
3774 for (j=0; j < x; j++)
3775 {
3776 (void) GetNextToken(q,&q,extent,token);
3777 if (*token == ',')
3778 (void) GetNextToken(q,&q,extent,token);
3779 graphic_context[n]->dash_pattern[j]=GetDrawValue(token,
3780 &next_token);
3781 if (token == next_token)
3782 ThrowPointExpectedException(token,exception);
3783 if (graphic_context[n]->dash_pattern[j] <= 0.0)
3784 status=MagickFalse;
3785 }
3786 if ((x & 0x01) != 0)
3787 for ( ; j < (2*x); j++)
3788 graphic_context[n]->dash_pattern[j]=
3789 graphic_context[n]->dash_pattern[j-x];
3790 graphic_context[n]->dash_pattern[j]=0.0;
3791 break;
3792 }
3793 (void) GetNextToken(q,&q,extent,token);
3794 break;
3795 }
3796 if (LocaleCompare("stroke-dashoffset",keyword) == 0)
3797 {
3798 (void) GetNextToken(q,&q,extent,token);
3799 graphic_context[n]->dash_offset=GetDrawValue(token,&next_token);
3800 if (token == next_token)
3801 ThrowPointExpectedException(token,exception);
3802 break;
3803 }
3804 if (LocaleCompare("stroke-linecap",keyword) == 0)
3805 {
3806 ssize_t
3807 linecap;
3808
3809 (void) GetNextToken(q,&q,extent,token);
3810 linecap=ParseCommandOption(MagickLineCapOptions,MagickFalse,token);
3811 if (linecap == -1)
3812 {
3813 status=MagickFalse;
3814 break;
3815 }
3816 graphic_context[n]->linecap=(LineCap) linecap;
3817 break;
3818 }
3819 if (LocaleCompare("stroke-linejoin",keyword) == 0)
3820 {
3821 ssize_t
3822 linejoin;
3823
3824 (void) GetNextToken(q,&q,extent,token);
3825 linejoin=ParseCommandOption(MagickLineJoinOptions,MagickFalse,
3826 token);
3827 if (linejoin == -1)
3828 {
3829 status=MagickFalse;
3830 break;
3831 }
3832 graphic_context[n]->linejoin=(LineJoin) linejoin;
3833 break;
3834 }
3835 if (LocaleCompare("stroke-miterlimit",keyword) == 0)
3836 {
3837 (void) GetNextToken(q,&q,extent,token);
3838 graphic_context[n]->miterlimit=StringToUnsignedLong(token);
3839 break;
3840 }
3841 if (LocaleCompare("stroke-opacity",keyword) == 0)
3842 {
3843 double
3844 opacity;
3845
3846 (void) GetNextToken(q,&q,extent,token);
3847 if (graphic_context[n]->clip_path != MagickFalse)
3848 break;
3849 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3850 opacity=MagickMin(MagickMax(factor*GetDrawValue(token,&next_token),
3851 0.0),1.0);
3852 if (token == next_token)
3853 ThrowPointExpectedException(token,exception);
3854 if (graphic_context[n]->compliance == SVGCompliance)
3855 graphic_context[n]->stroke_alpha*=opacity;
3856 else
3857 graphic_context[n]->stroke_alpha=(double) QuantumRange*opacity;
3858 if (graphic_context[n]->stroke.alpha != (double) TransparentAlpha)
3859 graphic_context[n]->stroke.alpha=graphic_context[n]->stroke_alpha;
3860 else
3861 graphic_context[n]->stroke.alpha=(MagickRealType)
3862 ClampToQuantum((double) QuantumRange*opacity);
3863 graphic_context[n]->stroke.alpha_trait=BlendPixelTrait;
3864 break;
3865 }
3866 if (LocaleCompare("stroke-width",keyword) == 0)
3867 {
3868 (void) GetNextToken(q,&q,extent,token);
3869 if (graphic_context[n]->clip_path != MagickFalse)
3870 break;
3871 graphic_context[n]->stroke_width=GetDrawValue(token,&next_token);
3872 if ((token == next_token) ||
3873 (graphic_context[n]->stroke_width < 0.0))
3874 ThrowPointExpectedException(token,exception);
3875 break;
3876 }
3877 status=MagickFalse;
3878 break;
3879 }
3880 case 't':
3881 case 'T':
3882 {
3883 if (LocaleCompare("text",keyword) == 0)
3884 {
3885 primitive_type=TextPrimitive;
3886 cursor=0.0;
3887 break;
3888 }
3889 if (LocaleCompare("text-align",keyword) == 0)
3890 {
3891 ssize_t
3892 align;
3893
3894 (void) GetNextToken(q,&q,extent,token);
3895 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3896 if (align == -1)
3897 {
3898 status=MagickFalse;
3899 break;
3900 }
3901 graphic_context[n]->align=(AlignType) align;
3902 break;
3903 }
3904 if (LocaleCompare("text-anchor",keyword) == 0)
3905 {
3906 ssize_t
3907 align;
3908
3909 (void) GetNextToken(q,&q,extent,token);
3910 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3911 if (align == -1)
3912 {
3913 status=MagickFalse;
3914 break;
3915 }
3916 graphic_context[n]->align=(AlignType) align;
3917 break;
3918 }
3919 if (LocaleCompare("text-antialias",keyword) == 0)
3920 {
3921 (void) GetNextToken(q,&q,extent,token);
3922 graphic_context[n]->text_antialias=StringToLong(token) != 0 ?
3923 MagickTrue : MagickFalse;
3924 break;
3925 }
3926 if (LocaleCompare("text-undercolor",keyword) == 0)
3927 {
3928 (void) GetNextToken(q,&q,extent,token);
3929 status&=(MagickStatusType) QueryColorCompliance(token,AllCompliance,
3930 &graphic_context[n]->undercolor,exception);
3931 break;
3932 }
3933 if (LocaleCompare("translate",keyword) == 0)
3934 {
3935 (void) GetNextToken(q,&q,extent,token);
3936 affine.tx=GetDrawValue(token,&next_token);
3937 if (token == next_token)
3938 ThrowPointExpectedException(token,exception);
3939 (void) GetNextToken(q,&q,extent,token);
3940 if (*token == ',')
3941 (void) GetNextToken(q,&q,extent,token);
3942 affine.ty=GetDrawValue(token,&next_token);
3943 if (token == next_token)
3944 ThrowPointExpectedException(token,exception);
3945 cursor=0.0;
3946 break;
3947 }
3948 status=MagickFalse;
3949 break;
3950 }
3951 case 'u':
3952 case 'U':
3953 {
3954 if (LocaleCompare("use",keyword) == 0)
3955 {
3956 const char
3957 *use;
3958
3959 /*
3960 Get a macro from the MVG document, and "use" it here.
3961 */
3962 (void) GetNextToken(q,&q,extent,token);
3963 use=(const char *) GetValueFromSplayTree(macros,token);
3964 if (use != (const char *) NULL)
3965 {
3966 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3967 (void) CloneString(&clone_info->primitive,use);
3968 status=RenderMVGContent(image,clone_info,depth+1,exception);
3969 clone_info=DestroyDrawInfo(clone_info);
3970 }
3971 break;
3972 }
3973 status=MagickFalse;
3974 break;
3975 }
3976 case 'v':
3977 case 'V':
3978 {
3979 if (LocaleCompare("viewbox",keyword) == 0)
3980 {
3981 (void) GetNextToken(q,&q,extent,token);
3982 graphic_context[n]->viewbox.x=CastDoubleToSsizeT(ceil(
3983 GetDrawValue(token,&next_token)-0.5));
3984 if (token == next_token)
3985 ThrowPointExpectedException(token,exception);
3986 (void) GetNextToken(q,&q,extent,token);
3987 if (*token == ',')
3988 (void) GetNextToken(q,&q,extent,token);
3989 graphic_context[n]->viewbox.y=CastDoubleToSsizeT(
3990 ceil(GetDrawValue(token,&next_token)-0.5));
3991 if (token == next_token)
3992 ThrowPointExpectedException(token,exception);
3993 (void) GetNextToken(q,&q,extent,token);
3994 if (*token == ',')
3995 (void) GetNextToken(q,&q,extent,token);
3996 graphic_context[n]->viewbox.width=CastDoubleToSizeT(floor(
3997 GetDrawValue(token,&next_token)+0.5));
3998 if (token == next_token)
3999 ThrowPointExpectedException(token,exception);
4000 (void) GetNextToken(q,&q,extent,token);
4001 if (*token == ',')
4002 (void) GetNextToken(q,&q,extent,token);
4003 graphic_context[n]->viewbox.height=CastDoubleToSizeT(floor(
4004 GetDrawValue(token,&next_token)+0.5));
4005 if (token == next_token)
4006 ThrowPointExpectedException(token,exception);
4007 break;
4008 }
4009 status=MagickFalse;
4010 break;
4011 }
4012 case 'w':
4013 case 'W':
4014 {
4015 if (LocaleCompare("word-spacing",keyword) == 0)
4016 {
4017 (void) GetNextToken(q,&q,extent,token);
4018 graphic_context[n]->interword_spacing=GetDrawValue(token,
4019 &next_token);
4020 if (token == next_token)
4021 ThrowPointExpectedException(token,exception);
4022 break;
4023 }
4024 status=MagickFalse;
4025 break;
4026 }
4027 default:
4028 {
4029 status=MagickFalse;
4030 break;
4031 }
4032 }
4033 if (status == MagickFalse)
4034 break;
4035 if ((fabs(affine.sx-1.0) >= MagickEpsilon) ||
4036 (fabs(affine.rx) >= MagickEpsilon) || (fabs(affine.ry) >= MagickEpsilon) ||
4037 (fabs(affine.sy-1.0) >= MagickEpsilon) ||
4038 (fabs(affine.tx) >= MagickEpsilon) || (fabs(affine.ty) >= MagickEpsilon))
4039 {
4040 graphic_context[n]->affine.sx=current.sx*affine.sx+current.ry*affine.rx;
4041 graphic_context[n]->affine.rx=current.rx*affine.sx+current.sy*affine.rx;
4042 graphic_context[n]->affine.ry=current.sx*affine.ry+current.ry*affine.sy;
4043 graphic_context[n]->affine.sy=current.rx*affine.ry+current.sy*affine.sy;
4044 graphic_context[n]->affine.tx=current.sx*affine.tx+current.ry*affine.ty+
4045 current.tx;
4046 graphic_context[n]->affine.ty=current.rx*affine.tx+current.sy*affine.ty+
4047 current.ty;
4048 }
4049 if (primitive_type == UndefinedPrimitive)
4050 {
4051 if (*q == '\0')
4052 {
4053 if (number_stops > 1)
4054 {
4055 GradientType
4056 type;
4057
4058 type=LinearGradient;
4059 if (draw_info->gradient.type == RadialGradient)
4060 type=RadialGradient;
4061 (void) GradientImage(image,type,PadSpread,stops,number_stops,
4062 exception);
4063 }
4064 if (number_stops > 0)
4065 stops=(StopInfo *) RelinquishMagickMemory(stops);
4066 }
4067 if ((draw_info->debug != MagickFalse) && (q > p))
4068 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int)
4069 (q-p-1),p);
4070 continue;
4071 }
4072 /*
4073 Parse the primitive attributes.
4074 */
4075 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4076 if (primitive_info[i].text != (char *) NULL)
4077 primitive_info[i].text=DestroyString(primitive_info[i].text);
4078 i=0;
4079 mvg_info.offset=i;
4080 j=0;
4081 primitive_info[0].point.x=0.0;
4082 primitive_info[0].point.y=0.0;
4083 primitive_info[0].coordinates=0;
4084 primitive_info[0].method=FloodfillMethod;
4085 primitive_info[0].closed_subpath=MagickFalse;
4086 for (x=0; *q != '\0'; x++)
4087 {
4088 /*
4089 Define points.
4090 */
4091 if (IsPoint(q) == MagickFalse)
4092 break;
4093 (void) GetNextToken(q,&q,extent,token);
4094 point.x=GetDrawValue(token,&next_token);
4095 if (token == next_token)
4096 ThrowPointExpectedException(token,exception);
4097 (void) GetNextToken(q,&q,extent,token);
4098 if (*token == ',')
4099 (void) GetNextToken(q,&q,extent,token);
4100 point.y=GetDrawValue(token,&next_token);
4101 if (token == next_token)
4102 ThrowPointExpectedException(token,exception);
4103 (void) GetNextToken(q,(const char **) NULL,extent,token);
4104 if (*token == ',')
4105 (void) GetNextToken(q,&q,extent,token);
4106 primitive_info[i].primitive=primitive_type;
4107 primitive_info[i].point=point;
4108 primitive_info[i].coordinates=0;
4109 primitive_info[i].method=FloodfillMethod;
4110 primitive_info[i].closed_subpath=MagickFalse;
4111 i++;
4112 mvg_info.offset=i;
4113 if (i < (ssize_t) number_points)
4114 continue;
4115 status&=(MagickStatusType) CheckPrimitiveExtent(&mvg_info,(double)
4116 number_points);
4117 primitive_info=(*mvg_info.primitive_info);
4118 }
4119 if (status == MagickFalse)
4120 break;
4121 if (primitive_info[j].text != (char *) NULL)
4122 primitive_info[j].text=DestroyString(primitive_info[j].text);
4123 primitive_info[j].primitive=primitive_type;
4124 primitive_info[j].coordinates=(size_t) x;
4125 primitive_info[j].method=FloodfillMethod;
4126 primitive_info[j].closed_subpath=MagickFalse;
4127 /*
4128 Circumscribe primitive within a circle.
4129 */
4130 bounds.x1=primitive_info[j].point.x;
4131 bounds.y1=primitive_info[j].point.y;
4132 bounds.x2=primitive_info[j].point.x;
4133 bounds.y2=primitive_info[j].point.y;
4134 for (k=1; k < (ssize_t) primitive_info[j].coordinates; k++)
4135 {
4136 point=primitive_info[j+k].point;
4137 if (point.x < bounds.x1)
4138 bounds.x1=point.x;
4139 if (point.y < bounds.y1)
4140 bounds.y1=point.y;
4141 if (point.x > bounds.x2)
4142 bounds.x2=point.x;
4143 if (point.y > bounds.y2)
4144 bounds.y2=point.y;
4145 }
4146 /*
4147 Speculate how many points our primitive might consume.
4148 */
4149 coordinates=(double) primitive_info[j].coordinates;
4150 switch (primitive_type)
4151 {
4152 case RectanglePrimitive:
4153 {
4154 coordinates*=5.0;
4155 break;
4156 }
4157 case RoundRectanglePrimitive:
4158 {
4159 double
4160 alpha,
4161 beta,
4162 radius;
4163
4164 alpha=bounds.x2-bounds.x1;
4165 beta=bounds.y2-bounds.y1;
4166 radius=hypot(alpha,beta);
4167 coordinates*=5.0;
4168 coordinates+=2.0*((size_t) ceil((double) MagickPI*radius))+6.0*
4169 BezierQuantum+360.0;
4170 break;
4171 }
4172 case BezierPrimitive:
4173 {
4174 coordinates=(BezierQuantum*(double) primitive_info[j].coordinates);
4175 break;
4176 }
4177 case PathPrimitive:
4178 {
4179 char
4180 *s,
4181 *t;
4182
4183 (void) GetNextToken(q,&q,extent,token);
4184 coordinates=1.0;
4185 t=token;
4186 for (s=token; *s != '\0'; s=t)
4187 {
4188 double
4189 value;
4190
4191 value=GetDrawValue(s,&t);
4192 (void) value;
4193 if (s == t)
4194 {
4195 t++;
4196 continue;
4197 }
4198 coordinates++;
4199 }
4200 for (s=token; *s != '\0'; s++)
4201 if (strspn(s,"AaCcQqSsTt") != 0)
4202 coordinates+=(20.0*BezierQuantum)+360.0;
4203 break;
4204 }
4205 default:
4206 break;
4207 }
4208 if (status == MagickFalse)
4209 break;
4210 if (((size_t) (i+coordinates)) >= number_points)
4211 {
4212 /*
4213 Resize based on speculative points required by primitive.
4214 */
4215 number_points+=(size_t) coordinates+1;
4216 if (number_points < (size_t) coordinates)
4217 {
4218 (void) ThrowMagickException(exception,GetMagickModule(),
4219 ResourceLimitError,"MemoryAllocationFailed","`%s'",
4220 image->filename);
4221 status=MagickFalse;
4222 break;
4223 }
4224 mvg_info.offset=i;
4225 status&=(MagickStatusType) CheckPrimitiveExtent(&mvg_info,(double)
4226 number_points);
4227 primitive_info=(*mvg_info.primitive_info);
4228 }
4229 status&=(MagickStatusType) CheckPrimitiveExtent(&mvg_info,
4230 PrimitiveExtentPad);
4231 primitive_info=(*mvg_info.primitive_info);
4232 if (status == MagickFalse)
4233 break;
4234 mvg_info.offset=j;
4235 switch (primitive_type)
4236 {
4237 case PointPrimitive:
4238 default:
4239 {
4240 if (primitive_info[j].coordinates != 1)
4241 {
4242 status=MagickFalse;
4243 break;
4244 }
4245 status&=(MagickStatusType) TracePoint(primitive_info+j,
4246 primitive_info[j].point);
4247 primitive_info=(*mvg_info.primitive_info);
4248 i=j+(ssize_t) primitive_info[j].coordinates;
4249 break;
4250 }
4251 case LinePrimitive:
4252 {
4253 if (primitive_info[j].coordinates != 2)
4254 {
4255 status=MagickFalse;
4256 break;
4257 }
4258 status&=(MagickStatusType) TraceLine(primitive_info+j,
4259 primitive_info[j].point,primitive_info[j+1].point);
4260 primitive_info=(*mvg_info.primitive_info);
4261 i=j+(ssize_t) primitive_info[j].coordinates;
4262 break;
4263 }
4264 case RectanglePrimitive:
4265 {
4266 if (primitive_info[j].coordinates != 2)
4267 {
4268 status=MagickFalse;
4269 break;
4270 }
4271 status&=(MagickStatusType) TraceRectangle(primitive_info+j,
4272 primitive_info[j].point,primitive_info[j+1].point);
4273 primitive_info=(*mvg_info.primitive_info);
4274 i=j+(ssize_t) primitive_info[j].coordinates;
4275 break;
4276 }
4277 case RoundRectanglePrimitive:
4278 {
4279 if (primitive_info[j].coordinates != 3)
4280 {
4281 status=MagickFalse;
4282 break;
4283 }
4284 if ((primitive_info[j+2].point.x < 0.0) ||
4285 (primitive_info[j+2].point.y < 0.0))
4286 {
4287 status=MagickFalse;
4288 break;
4289 }
4290 if ((primitive_info[j+1].point.x-primitive_info[j].point.x) < 0.0)
4291 {
4292 status=MagickFalse;
4293 break;
4294 }
4295 if ((primitive_info[j+1].point.y-primitive_info[j].point.y) < 0.0)
4296 {
4297 status=MagickFalse;
4298 break;
4299 }
4300 status&=(MagickStatusType) TraceRoundRectangle(&mvg_info,
4301 primitive_info[j].point,primitive_info[j+1].point,
4302 primitive_info[j+2].point);
4303 primitive_info=(*mvg_info.primitive_info);
4304 i=j+(ssize_t) primitive_info[j].coordinates;
4305 break;
4306 }
4307 case ArcPrimitive:
4308 {
4309 if (primitive_info[j].coordinates != 3)
4310 {
4311 status=MagickFalse;
4312 break;
4313 }
4314 status&=(MagickStatusType) TraceArc(&mvg_info,primitive_info[j].point,
4315 primitive_info[j+1].point,primitive_info[j+2].point);
4316 primitive_info=(*mvg_info.primitive_info);
4317 i=j+(ssize_t) primitive_info[j].coordinates;
4318 break;
4319 }
4320 case EllipsePrimitive:
4321 {
4322 if (primitive_info[j].coordinates != 3)
4323 {
4324 status=MagickFalse;
4325 break;
4326 }
4327 if ((primitive_info[j+1].point.x < 0.0) ||
4328 (primitive_info[j+1].point.y < 0.0))
4329 {
4330 status=MagickFalse;
4331 break;
4332 }
4333 status&=(MagickStatusType) TraceEllipse(&mvg_info,
4334 primitive_info[j].point,primitive_info[j+1].point,
4335 primitive_info[j+2].point);
4336 primitive_info=(*mvg_info.primitive_info);
4337 i=j+(ssize_t) primitive_info[j].coordinates;
4338 break;
4339 }
4340 case CirclePrimitive:
4341 {
4342 if (primitive_info[j].coordinates != 2)
4343 {
4344 status=MagickFalse;
4345 break;
4346 }
4347 status&=(MagickStatusType) TraceCircle(&mvg_info,
4348 primitive_info[j].point,primitive_info[j+1].point);
4349 primitive_info=(*mvg_info.primitive_info);
4350 i=j+(ssize_t) primitive_info[j].coordinates;
4351 break;
4352 }
4353 case PolylinePrimitive:
4354 {
4355 if (primitive_info[j].coordinates < 1)
4356 {
4357 status=MagickFalse;
4358 break;
4359 }
4360 break;
4361 }
4362 case PolygonPrimitive:
4363 {
4364 if (primitive_info[j].coordinates < 3)
4365 {
4366 status=MagickFalse;
4367 break;
4368 }
4369 primitive_info[i]=primitive_info[j];
4370 primitive_info[i].coordinates=0;
4371 primitive_info[j].coordinates++;
4372 primitive_info[j].closed_subpath=MagickTrue;
4373 i++;
4374 break;
4375 }
4376 case BezierPrimitive:
4377 {
4378 if (primitive_info[j].coordinates < 3)
4379 {
4380 status=MagickFalse;
4381 break;
4382 }
4383 status&=(MagickStatusType) TraceBezier(&mvg_info,
4384 primitive_info[j].coordinates);
4385 primitive_info=(*mvg_info.primitive_info);
4386 i=j+(ssize_t) primitive_info[j].coordinates;
4387 break;
4388 }
4389 case PathPrimitive:
4390 {
4391 coordinates=(double) TracePath(&mvg_info,token,exception);
4392 primitive_info=(*mvg_info.primitive_info);
4393 if (coordinates < 0.0)
4394 {
4395 status=MagickFalse;
4396 break;
4397 }
4398 i=(ssize_t) (j+coordinates);
4399 break;
4400 }
4401 case AlphaPrimitive:
4402 case ColorPrimitive:
4403 {
4404 ssize_t
4405 method;
4406
4407 if (primitive_info[j].coordinates != 1)
4408 {
4409 status=MagickFalse;
4410 break;
4411 }
4412 (void) GetNextToken(q,&q,extent,token);
4413 method=ParseCommandOption(MagickMethodOptions,MagickFalse,token);
4414 if (method == -1)
4415 {
4416 status=MagickFalse;
4417 break;
4418 }
4419 primitive_info[j].method=(PaintMethod) method;
4420 break;
4421 }
4422 case TextPrimitive:
4423 {
4424 if (primitive_info[j].coordinates != 1)
4425 {
4426 status=MagickFalse;
4427 break;
4428 }
4429 if (*token != ',')
4430 (void) GetNextToken(q,&q,extent,token);
4431 (void) CloneString(&primitive_info[j].text,token);
4432 /*
4433 Compute text cursor offset.
4434 */
4435 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
4436 if ((fabs(mvg_info.point.x-primitive_info->point.x) < MagickEpsilon) &&
4437 (fabs(mvg_info.point.y-primitive_info->point.y) < MagickEpsilon))
4438 {
4439 mvg_info.point=primitive_info->point;
4440 primitive_info->point.x+=cursor;
4441 }
4442 else
4443 {
4444 mvg_info.point=primitive_info->point;
4445 cursor=0.0;
4446 }
4447 clone_info->render=MagickFalse;
4448 clone_info->text=AcquireString(token);
4449 status&=(MagickStatusType) GetTypeMetrics(image,clone_info,
4450 &metrics,exception);
4451 clone_info=DestroyDrawInfo(clone_info);
4452 cursor+=metrics.width;
4453 if (graphic_context[n]->compliance != SVGCompliance)
4454 cursor=0.0;
4455 break;
4456 }
4457 case ImagePrimitive:
4458 {
4459 if (primitive_info[j].coordinates != 2)
4460 {
4461 status=MagickFalse;
4462 break;
4463 }
4464 (void) GetNextToken(q,&q,extent,token);
4465 (void) CloneString(&primitive_info[j].text,token);
4466 break;
4467 }
4468 }
4469 mvg_info.offset=i;
4470 if (status == 0)
4471 break;
4472 primitive_info[i].primitive=UndefinedPrimitive;
4473 if ((draw_info->debug != MagickFalse) && (q > p))
4474 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int) (q-p),p);
4475 /*
4476 Sanity check.
4477 */
4478 status&=(MagickStatusType) CheckPrimitiveExtent(&mvg_info,ExpandAffine(
4479 &graphic_context[n]->affine));
4480 primitive_info=(*mvg_info.primitive_info);
4481 if (status == 0)
4482 break;
4483 status&=(MagickStatusType) CheckPrimitiveExtent(&mvg_info,(double)
4484 graphic_context[n]->stroke_width);
4485 primitive_info=(*mvg_info.primitive_info);
4486 if (status == 0)
4487 break;
4488 if (i == 0)
4489 continue;
4490 /*
4491 Transform points.
4492 */
4493 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4494 {
4495 point=primitive_info[i].point;
4496 primitive_info[i].point.x=graphic_context[n]->affine.sx*point.x+
4497 graphic_context[n]->affine.ry*point.y+graphic_context[n]->affine.tx;
4498 primitive_info[i].point.y=graphic_context[n]->affine.rx*point.x+
4499 graphic_context[n]->affine.sy*point.y+graphic_context[n]->affine.ty;
4500 point=primitive_info[i].point;
4501 if (point.x < graphic_context[n]->bounds.x1)
4502 graphic_context[n]->bounds.x1=point.x;
4503 if (point.y < graphic_context[n]->bounds.y1)
4504 graphic_context[n]->bounds.y1=point.y;
4505 if (point.x > graphic_context[n]->bounds.x2)
4506 graphic_context[n]->bounds.x2=point.x;
4507 if (point.y > graphic_context[n]->bounds.y2)
4508 graphic_context[n]->bounds.y2=point.y;
4509 if (primitive_info[i].primitive == ImagePrimitive)
4510 break;
4511 if (i >= (ssize_t) number_points)
4512 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
4513 }
4514 if (graphic_context[n]->render != MagickFalse)
4515 {
4516 if ((n != 0) && (graphic_context[n]->compliance != SVGCompliance) &&
4517 (graphic_context[n]->clip_mask != (char *) NULL) &&
4518 (LocaleCompare(graphic_context[n]->clip_mask,
4519 graphic_context[n-1]->clip_mask) != 0))
4520 {
4521 const char
4522 *clip_path;
4523
4524 clip_path=(const char *) GetValueFromSplayTree(macros,
4525 graphic_context[n]->clip_mask);
4526 if (clip_path != (const char *) NULL)
4527 (void) SetImageArtifact(image,graphic_context[n]->clip_mask,
4528 clip_path);
4529 status&=(MagickStatusType) DrawClipPath(image,graphic_context[n],
4530 graphic_context[n]->clip_mask,exception);
4531 }
4532 status&=(MagickStatusType) DrawPrimitive(image,graphic_context[n],
4533 primitive_info,exception);
4534 }
4535 proceed=SetImageProgress(image,RenderImageTag,q-primitive,(MagickSizeType)
4536 primitive_extent);
4537 if (proceed == MagickFalse)
4538 break;
4539 if (status == 0)
4540 break;
4541 }
4542 if (draw_info->debug != MagickFalse)
4543 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end draw-image");
4544 /*
4545 Relinquish resources.
4546 */
4547 macros=DestroySplayTree(macros);
4548 token=DestroyString(token);
4549 if (primitive_info != (PrimitiveInfo *) NULL)
4550 {
4551 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4552 if (primitive_info[i].text != (char *) NULL)
4553 primitive_info[i].text=DestroyString(primitive_info[i].text);
4554 primitive_info=(PrimitiveInfo *) RelinquishMagickMemory(primitive_info);
4555 }
4556 primitive=DestroyString(primitive);
4557 if (stops != (StopInfo *) NULL)
4558 stops=(StopInfo *) RelinquishMagickMemory(stops);
4559 for ( ; n >= 0; n--)
4560 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
4561 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
4562 if ((status == MagickFalse) && (exception->severity < ErrorException))
4563 ThrowBinaryException(DrawError,"NonconformingDrawingPrimitiveDefinition",
4564 keyword);
4565 return(status != 0 ? MagickTrue : MagickFalse);
4566}
4567
4568MagickExport MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info,
4569 ExceptionInfo *exception)
4570{
4571 return(RenderMVGContent(image,draw_info,0,exception));
4572}
4573␌
4574/*
4575%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4576% %
4577% %
4578% %
4579% D r a w P a t t e r n P a t h %
4580% %
4581% %
4582% %
4583%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4584%
4585% DrawPatternPath() draws a pattern.
4586%
4587% The format of the DrawPatternPath method is:
4588%
4589% MagickBooleanType DrawPatternPath(Image *image,const DrawInfo *draw_info,
4590% const char *name,Image **pattern,ExceptionInfo *exception)
4591%
4592% A description of each parameter follows:
4593%
4594% o image: the image.
4595%
4596% o draw_info: the draw info.
4597%
4598% o name: the pattern name.
4599%
4600% o image: the image.
4601%
4602% o exception: return any errors or warnings in this structure.
4603%
4604*/
4605MagickExport MagickBooleanType DrawPatternPath(Image *image,
4606 const DrawInfo *draw_info,const char *name,Image **pattern,
4607 ExceptionInfo *exception)
4608{
4609 char
4610 property[MagickPathExtent];
4611
4612 const char
4613 *geometry,
4614 *path,
4615 *type;
4616
4617 DrawInfo
4618 *clone_info;
4619
4620 ImageInfo
4621 *image_info;
4622
4623 MagickBooleanType
4624 status;
4625
4626 assert(image != (Image *) NULL);
4627 assert(image->signature == MagickCoreSignature);
4628 assert(draw_info != (const DrawInfo *) NULL);
4629 assert(name != (const char *) NULL);
4630 if (IsEventLogging() != MagickFalse)
4631 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4632 (void) FormatLocaleString(property,MagickPathExtent,"%s",name);
4633 path=GetImageArtifact(image,property);
4634 if (path == (const char *) NULL)
4635 return(MagickFalse);
4636 (void) FormatLocaleString(property,MagickPathExtent,"%s-geometry",name);
4637 geometry=GetImageArtifact(image,property);
4638 if (geometry == (const char *) NULL)
4639 return(MagickFalse);
4640 if ((*pattern) != (Image *) NULL)
4641 *pattern=DestroyImage(*pattern);
4642 image_info=AcquireImageInfo();
4643 image_info->size=AcquireString(geometry);
4644 *pattern=AcquireImage(image_info,exception);
4645 image_info=DestroyImageInfo(image_info);
4646 (void) QueryColorCompliance("#00000000",AllCompliance,
4647 &(*pattern)->background_color,exception);
4648 (void) SetImageBackgroundColor(*pattern,exception);
4649 if (draw_info->debug != MagickFalse)
4650 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
4651 "begin pattern-path %s %s",name,geometry);
4652 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
4653 if (clone_info->fill_pattern != (Image *) NULL)
4654 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
4655 if (clone_info->stroke_pattern != (Image *) NULL)
4656 clone_info->stroke_pattern=DestroyImage(clone_info->stroke_pattern);
4657 (void) FormatLocaleString(property,MagickPathExtent,"%s-type",name);
4658 type=GetImageArtifact(image,property);
4659 if (type != (const char *) NULL)
4660 clone_info->gradient.type=(GradientType) ParseCommandOption(
4661 MagickGradientOptions,MagickFalse,type);
4662 (void) CloneString(&clone_info->primitive,path);
4663 status=RenderMVGContent(*pattern,clone_info,0,exception);
4664 clone_info=DestroyDrawInfo(clone_info);
4665 if (draw_info->debug != MagickFalse)
4666 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end pattern-path");
4667 return(status);
4668}
4669␌
4670/*
4671%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4672% %
4673% %
4674% %
4675+ D r a w P o l y g o n P r i m i t i v e %
4676% %
4677% %
4678% %
4679%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4680%
4681% DrawPolygonPrimitive() draws a polygon on the image.
4682%
4683% The format of the DrawPolygonPrimitive method is:
4684%
4685% MagickBooleanType DrawPolygonPrimitive(Image *image,
4686% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info,
4687% ExceptionInfo *exception)
4688%
4689% A description of each parameter follows:
4690%
4691% o image: the image.
4692%
4693% o draw_info: the draw info.
4694%
4695% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
4696%
4697% o exception: return any errors or warnings in this structure.
4698%
4699*/
4700
4701static PolygonInfo **DestroyPolygonTLS(PolygonInfo **polygon_info)
4702{
4703 ssize_t
4704 i;
4705
4706 assert(polygon_info != (PolygonInfo **) NULL);
4707 for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
4708 if (polygon_info[i] != (PolygonInfo *) NULL)
4709 polygon_info[i]=DestroyPolygonInfo(polygon_info[i]);
4710 polygon_info=(PolygonInfo **) RelinquishMagickMemory(polygon_info);
4711 return(polygon_info);
4712}
4713
4714static PolygonInfo **AcquirePolygonTLS(const PrimitiveInfo *primitive_info,
4715 ExceptionInfo *exception)
4716{
4717 PathInfo
4718 *magick_restrict path_info;
4719
4720 PolygonInfo
4721 **polygon_info;
4722
4723 size_t
4724 number_threads;
4725
4726 number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
4727 polygon_info=(PolygonInfo **) AcquireQuantumMemory(number_threads,
4728 sizeof(*polygon_info));
4729 if (polygon_info == (PolygonInfo **) NULL)
4730 {
4731 (void) ThrowMagickException(exception,GetMagickModule(),
4732 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4733 return((PolygonInfo **) NULL);
4734 }
4735 (void) memset(polygon_info,0,number_threads*sizeof(*polygon_info));
4736 path_info=ConvertPrimitiveToPath(primitive_info,exception);
4737 if (path_info == (PathInfo *) NULL)
4738 return(DestroyPolygonTLS(polygon_info));
4739 polygon_info[0]=ConvertPathToPolygon(path_info,exception);
4740 if (polygon_info[0] == (PolygonInfo *) NULL)
4741 {
4742 (void) ThrowMagickException(exception,GetMagickModule(),
4743 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4744 return(DestroyPolygonTLS(polygon_info));
4745 }
4746 path_info=(PathInfo *) RelinquishMagickMemory(path_info);
4747 return(polygon_info);
4748}
4749
4750static MagickBooleanType ClonePolygonEdgesTLS(PolygonInfo **polygon_info,
4751 const size_t number_threads,ExceptionInfo *exception)
4752{
4753 ssize_t
4754 i;
4755
4756 for (i=1; i < (ssize_t) number_threads; i++)
4757 {
4758 EdgeInfo
4759 *edge_info;
4760
4761 ssize_t
4762 j;
4763
4764 polygon_info[i]=(PolygonInfo *) AcquireMagickMemory(
4765 sizeof(*polygon_info[i]));
4766 if (polygon_info[i] == (PolygonInfo *) NULL)
4767 {
4768 (void) ThrowMagickException(exception,GetMagickModule(),
4769 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4770 return(MagickFalse);
4771 }
4772 polygon_info[i]->number_edges=0;
4773 edge_info=polygon_info[0]->edges;
4774 polygon_info[i]->edges=(EdgeInfo *) AcquireQuantumMemory(
4775 polygon_info[0]->number_edges,sizeof(*edge_info));
4776 if (polygon_info[i]->edges == (EdgeInfo *) NULL)
4777 {
4778 (void) ThrowMagickException(exception,GetMagickModule(),
4779 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4780 return(MagickFalse);
4781 }
4782 (void) memcpy(polygon_info[i]->edges,edge_info,
4783 polygon_info[0]->number_edges*sizeof(*edge_info));
4784 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4785 polygon_info[i]->edges[j].points=(PointInfo *) NULL;
4786 polygon_info[i]->number_edges=polygon_info[0]->number_edges;
4787 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4788 {
4789 edge_info=polygon_info[0]->edges+j;
4790 polygon_info[i]->edges[j].points=(PointInfo *) AcquireQuantumMemory(
4791 edge_info->number_points,sizeof(*edge_info));
4792 if (polygon_info[i]->edges[j].points == (PointInfo *) NULL)
4793 {
4794 (void) ThrowMagickException(exception,GetMagickModule(),
4795 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4796 return(MagickFalse);
4797 }
4798 (void) memcpy(polygon_info[i]->edges[j].points,edge_info->points,
4799 edge_info->number_points*sizeof(*edge_info->points));
4800 }
4801 }
4802 return(MagickTrue);
4803}
4804
4805static size_t DestroyEdge(PolygonInfo *polygon_info,const ssize_t edge)
4806{
4807 assert(edge < (ssize_t) polygon_info->number_edges);
4808 polygon_info->edges[edge].points=(PointInfo *) RelinquishMagickMemory(
4809 polygon_info->edges[edge].points);
4810 polygon_info->number_edges--;
4811 if (edge < (ssize_t) polygon_info->number_edges)
4812 (void) memmove(polygon_info->edges+edge,polygon_info->edges+edge+1,
4813 (polygon_info->number_edges-(size_t) edge)*sizeof(*polygon_info->edges));
4814 return(polygon_info->number_edges);
4815}
4816
4817static double GetFillAlpha(PolygonInfo *polygon_info,const double mid,
4818 const MagickBooleanType fill,const FillRule fill_rule,const ssize_t x,
4819 const ssize_t y,double *stroke_alpha)
4820{
4821 double
4822 alpha,
4823 beta,
4824 distance,
4825 subpath_alpha;
4826
4827 const PointInfo
4828 *q;
4829
4830 EdgeInfo
4831 *p;
4832
4833 PointInfo
4834 delta;
4835
4836 ssize_t
4837 i,
4838 j,
4839 winding_number;
4840
4841 /*
4842 Compute fill & stroke opacity for this (x,y) point.
4843 */
4844 *stroke_alpha=0.0;
4845 subpath_alpha=0.0;
4846 p=polygon_info->edges;
4847 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4848 {
4849 if ((double) y <= (p->bounds.y1-mid-0.5))
4850 break;
4851 if ((double) y > (p->bounds.y2+mid+0.5))
4852 {
4853 p--;
4854 (void) DestroyEdge(polygon_info,j--);
4855 continue;
4856 }
4857 if (((double) x <= (p->bounds.x1-mid-0.5)) ||
4858 ((double) x > (p->bounds.x2+mid+0.5)))
4859 continue;
4860 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4861 for ( ; i < (ssize_t) p->number_points; i++)
4862 {
4863 if ((double) y <= (p->points[i-1].y-mid-0.5))
4864 break;
4865 if ((double) y > (p->points[i].y+mid+0.5))
4866 continue;
4867 if (p->scanline != (double) y)
4868 {
4869 p->scanline=(double) y;
4870 p->highwater=(size_t) i;
4871 }
4872 /*
4873 Compute distance between a point and an edge.
4874 */
4875 q=p->points+i-1;
4876 delta.x=(q+1)->x-q->x;
4877 delta.y=(q+1)->y-q->y;
4878 beta=delta.x*(x-q->x)+delta.y*(y-q->y); /* segLen*point-cos(theta) */
4879 if (beta <= 0.0)
4880 {
4881 /*
4882 Cosine <= 0, point is closest to q.
4883 */
4884 delta.x=(double) x-q->x;
4885 delta.y=(double) y-q->y;
4886 distance=delta.x*delta.x+delta.y*delta.y;
4887 }
4888 else
4889 {
4890 alpha=delta.x*delta.x+delta.y*delta.y; /* segLen*segLen */
4891 if (beta >= alpha)
4892 {
4893 /*
4894 Point is closest to q+1.
4895 */
4896 delta.x=(double) x-(q+1)->x;
4897 delta.y=(double) y-(q+1)->y;
4898 distance=delta.x*delta.x+delta.y*delta.y;
4899 }
4900 else
4901 {
4902 /*
4903 Point is closest to point between q & q+1.
4904 */
4905 alpha=MagickSafeReciprocal(alpha);
4906 beta=delta.x*(y-q->y)-delta.y*(x-q->x);
4907 distance=alpha*beta*beta;
4908 }
4909 }
4910 /*
4911 Compute stroke & subpath opacity.
4912 */
4913 beta=0.0;
4914 if (p->ghostline == MagickFalse)
4915 {
4916 alpha=mid+0.5;
4917 if ((*stroke_alpha < 1.0) &&
4918 (distance <= ((alpha+0.25)*(alpha+0.25))))
4919 {
4920 alpha=mid-0.5;
4921 if (distance <= ((alpha+0.25)*(alpha+0.25)))
4922 *stroke_alpha=1.0;
4923 else
4924 {
4925 beta=1.0;
4926 if (fabs(distance-1.0) >= MagickEpsilon)
4927 beta=sqrt((double) distance);
4928 alpha=beta-mid-0.5;
4929 if (*stroke_alpha < ((alpha-0.25)*(alpha-0.25)))
4930 *stroke_alpha=(alpha-0.25)*(alpha-0.25);
4931 }
4932 }
4933 }
4934 if ((fill == MagickFalse) || (distance > 1.0) || (subpath_alpha >= 1.0))
4935 continue;
4936 if (distance <= 0.0)
4937 {
4938 subpath_alpha=1.0;
4939 continue;
4940 }
4941 if (distance > 1.0)
4942 continue;
4943 if (fabs(beta) < MagickEpsilon)
4944 {
4945 beta=1.0;
4946 if (fabs(distance-1.0) >= MagickEpsilon)
4947 beta=sqrt(distance);
4948 }
4949 alpha=beta-1.0;
4950 if (subpath_alpha < (alpha*alpha))
4951 subpath_alpha=alpha*alpha;
4952 }
4953 }
4954 /*
4955 Compute fill opacity.
4956 */
4957 if (fill == MagickFalse)
4958 return(0.0);
4959 if (subpath_alpha >= 1.0)
4960 return(1.0);
4961 /*
4962 Determine winding number.
4963 */
4964 winding_number=0;
4965 p=polygon_info->edges;
4966 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4967 {
4968 if ((double) y <= p->bounds.y1)
4969 break;
4970 if (((double) y > p->bounds.y2) || ((double) x <= p->bounds.x1))
4971 continue;
4972 if ((double) x > p->bounds.x2)
4973 {
4974 winding_number+=p->direction != 0 ? 1 : -1;
4975 continue;
4976 }
4977 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4978 for ( ; i < (ssize_t) (p->number_points-1); i++)
4979 if ((double) y <= p->points[i].y)
4980 break;
4981 q=p->points+i-1;
4982 if ((((q+1)->x-q->x)*(y-q->y)) <= (((q+1)->y-q->y)*(x-q->x)))
4983 winding_number+=p->direction != 0 ? 1 : -1;
4984 }
4985 if (fill_rule != NonZeroRule)
4986 {
4987 if ((MagickAbsoluteValue(winding_number) & 0x01) != 0)
4988 return(1.0);
4989 }
4990 else
4991 if (MagickAbsoluteValue(winding_number) != 0)
4992 return(1.0);
4993 return(subpath_alpha);
4994}
4995
4996static MagickBooleanType DrawPolygonPrimitive(Image *image,
4997 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info,
4998 ExceptionInfo *exception)
4999{
5000 typedef struct _ExtentInfo
5001 {
5002 ssize_t
5003 x1,
5004 y1,
5005 x2,
5006 y2;
5007 } ExtentInfo;
5008
5009 CacheView
5010 *image_view;
5011
5012 const char
5013 *artifact;
5014
5015 double
5016 mid;
5017
5018 EdgeInfo
5019 *p;
5020
5021 ExtentInfo
5022 poly_extent;
5023
5024 MagickBooleanType
5025 fill,
5026 status;
5027
5028 PolygonInfo
5029 **magick_restrict polygon_info;
5030
5031 SegmentInfo
5032 bounds;
5033
5034 size_t
5035 number_threads;
5036
5037 ssize_t
5038 i,
5039 y;
5040
5041 assert(image != (Image *) NULL);
5042 assert(image->signature == MagickCoreSignature);
5043 assert(draw_info != (DrawInfo *) NULL);
5044 assert(draw_info->signature == MagickCoreSignature);
5045 assert(primitive_info != (PrimitiveInfo *) NULL);
5046 if (IsEventLogging() != MagickFalse)
5047 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
5048 if (primitive_info->coordinates <= 1)
5049 return(MagickTrue);
5050 /*
5051 Compute bounding box.
5052 */
5053 polygon_info=AcquirePolygonTLS(primitive_info,exception);
5054 if (polygon_info == (PolygonInfo **) NULL)
5055 return(MagickFalse);
5056 if (draw_info->debug != MagickFalse)
5057 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-polygon");
5058 fill=(primitive_info->method == FillToBorderMethod) ||
5059 (primitive_info->method == FloodfillMethod) ? MagickTrue : MagickFalse;
5060 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
5061 bounds=polygon_info[0]->edges[0].bounds;
5062 artifact=GetImageArtifact(image,"draw:render-bounding-rectangles");
5063 if (IsStringTrue(artifact) != MagickFalse)
5064 (void) DrawBoundingRectangles(image,draw_info,polygon_info[0],exception);
5065 for (i=1; i < (ssize_t) polygon_info[0]->number_edges; i++)
5066 {
5067 p=polygon_info[0]->edges+i;
5068 if (p->bounds.x1 < bounds.x1)
5069 bounds.x1=p->bounds.x1;
5070 if (p->bounds.y1 < bounds.y1)
5071 bounds.y1=p->bounds.y1;
5072 if (p->bounds.x2 > bounds.x2)
5073 bounds.x2=p->bounds.x2;
5074 if (p->bounds.y2 > bounds.y2)
5075 bounds.y2=p->bounds.y2;
5076 }
5077 bounds.x1-=(mid+1.0);
5078 bounds.y1-=(mid+1.0);
5079 bounds.x2+=(mid+1.0);
5080 bounds.y2+=(mid+1.0);
5081 if ((bounds.x1 >= (double) image->columns) ||
5082 (bounds.y1 >= (double) image->rows) ||
5083 (bounds.x2 <= 0.0) || (bounds.y2 <= 0.0))
5084 {
5085 polygon_info=DestroyPolygonTLS(polygon_info);
5086 return(MagickTrue); /* virtual polygon */
5087 }
5088 bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double) image->columns-1.0 ?
5089 (double) image->columns-1.0 : bounds.x1;
5090 bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double) image->rows-1.0 ?
5091 (double) image->rows-1.0 : bounds.y1;
5092 bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double) image->columns-1.0 ?
5093 (double) image->columns-1.0 : bounds.x2;
5094 bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double) image->rows-1.0 ?
5095 (double) image->rows-1.0 : bounds.y2;
5096 poly_extent.x1=CastDoubleToSsizeT(ceil(bounds.x1-0.5));
5097 poly_extent.y1=CastDoubleToSsizeT(ceil(bounds.y1-0.5));
5098 poly_extent.x2=CastDoubleToSsizeT(floor(bounds.x2+0.5));
5099 poly_extent.y2=CastDoubleToSsizeT(floor(bounds.y2+0.5));
5100 number_threads=(size_t) GetMagickNumberThreads(image,image,(size_t)
5101 (poly_extent.y2-poly_extent.y1+1),1);
5102 status=ClonePolygonEdgesTLS(polygon_info,number_threads,exception);
5103 if (status == MagickFalse)
5104 {
5105 polygon_info=DestroyPolygonTLS(polygon_info);
5106 return(status);
5107 }
5108 image_view=AcquireAuthenticCacheView(image,exception);
5109 if ((primitive_info->coordinates == 1) ||
5110 (polygon_info[0]->number_edges == 0))
5111 {
5112 /*
5113 Draw point.
5114 */
5115#if defined(MAGICKCORE_OPENMP_SUPPORT)
5116 #pragma omp parallel for schedule(static) shared(status) \
5117 num_threads((int) number_threads)
5118#endif
5119 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5120 {
5121 PixelInfo
5122 pixel;
5123
5124 ssize_t
5125 x;
5126
5127 Quantum
5128 *magick_restrict q;
5129
5130 if (status == MagickFalse)
5131 continue;
5132 x=poly_extent.x1;
5133 q=GetCacheViewAuthenticPixels(image_view,x,y,(size_t) (poly_extent.x2-
5134 x+1),1,exception);
5135 if (q == (Quantum *) NULL)
5136 {
5137 status=MagickFalse;
5138 continue;
5139 }
5140 GetPixelInfo(image,&pixel);
5141 for ( ; x <= poly_extent.x2; x++)
5142 {
5143 if ((x == CastDoubleToSsizeT(ceil(primitive_info->point.x-0.5))) &&
5144 (y == CastDoubleToSsizeT(ceil(primitive_info->point.y-0.5))))
5145 {
5146 GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,&pixel,
5147 exception);
5148 SetPixelViaPixelInfo(image,&pixel,q);
5149 }
5150 q+=(ptrdiff_t) GetPixelChannels(image);
5151 }
5152 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
5153 status=MagickFalse;
5154 }
5155 image_view=DestroyCacheView(image_view);
5156 polygon_info=DestroyPolygonTLS(polygon_info);
5157 if (draw_info->debug != MagickFalse)
5158 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5159 " end draw-polygon");
5160 return(status);
5161 }
5162 /*
5163 Draw polygon or line.
5164 */
5165#if defined(MAGICKCORE_OPENMP_SUPPORT)
5166 #pragma omp parallel for schedule(static) shared(status) \
5167 num_threads((int) number_threads)
5168#endif
5169 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5170 {
5171 const int
5172 id = GetOpenMPThreadId();
5173
5174 Quantum
5175 *magick_restrict q;
5176
5177 ssize_t
5178 x;
5179
5180 if (status == MagickFalse)
5181 continue;
5182 q=GetCacheViewAuthenticPixels(image_view,poly_extent.x1,y,(size_t)
5183 (poly_extent.x2-poly_extent.x1+1),1,exception);
5184 if (q == (Quantum *) NULL)
5185 {
5186 status=MagickFalse;
5187 continue;
5188 }
5189 for (x=poly_extent.x1; x <= poly_extent.x2; x++)
5190 {
5191 double
5192 fill_alpha,
5193 stroke_alpha;
5194
5195 PixelInfo
5196 fill_color,
5197 stroke_color;
5198
5199 /*
5200 Fill and/or stroke.
5201 */
5202 fill_alpha=GetFillAlpha(polygon_info[id],mid,fill,draw_info->fill_rule,
5203 x,y,&stroke_alpha);
5204 if (draw_info->stroke_antialias == MagickFalse)
5205 {
5206 fill_alpha=fill_alpha >= AntialiasThreshold ? 1.0 : 0.0;
5207 stroke_alpha=stroke_alpha >= AntialiasThreshold ? 1.0 : 0.0;
5208 }
5209 GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,&fill_color,
5210 exception);
5211 CompositePixelOver(image,&fill_color,fill_alpha*fill_color.alpha,q,
5212 (double) GetPixelAlpha(image,q),q);
5213 GetStrokeColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,&stroke_color,
5214 exception);
5215 CompositePixelOver(image,&stroke_color,stroke_alpha*stroke_color.alpha,q,
5216 (double) GetPixelAlpha(image,q),q);
5217 q+=(ptrdiff_t) GetPixelChannels(image);
5218 }
5219 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
5220 status=MagickFalse;
5221 }
5222 image_view=DestroyCacheView(image_view);
5223 polygon_info=DestroyPolygonTLS(polygon_info);
5224 if (draw_info->debug != MagickFalse)
5225 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-polygon");
5226 return(status);
5227}
5228␌
5229/*
5230%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5231% %
5232% %
5233% %
5234% D r a w P r i m i t i v e %
5235% %
5236% %
5237% %
5238%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5239%
5240% DrawPrimitive() draws a primitive (line, rectangle, ellipse) on the image.
5241%
5242% The format of the DrawPrimitive method is:
5243%
5244% MagickBooleanType DrawPrimitive(Image *image,const DrawInfo *draw_info,
5245% PrimitiveInfo *primitive_info,ExceptionInfo *exception)
5246%
5247% A description of each parameter follows:
5248%
5249% o image: the image.
5250%
5251% o draw_info: the draw info.
5252%
5253% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5254%
5255% o exception: return any errors or warnings in this structure.
5256%
5257*/
5258static void LogPrimitiveInfo(const PrimitiveInfo *primitive_info)
5259{
5260 const char
5261 *methods[] =
5262 {
5263 "point",
5264 "replace",
5265 "floodfill",
5266 "filltoborder",
5267 "reset",
5268 "?"
5269 };
5270
5271 PointInfo
5272 p,
5273 point,
5274 q;
5275
5276 ssize_t
5277 i,
5278 x;
5279
5280 ssize_t
5281 coordinates,
5282 y;
5283
5284 x=CastDoubleToSsizeT(ceil(primitive_info->point.x-0.5));
5285 y=CastDoubleToSsizeT(ceil(primitive_info->point.y-0.5));
5286 switch (primitive_info->primitive)
5287 {
5288 case AlphaPrimitive:
5289 {
5290 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5291 "AlphaPrimitive %.20g,%.20g %s",(double) x,(double) y,
5292 methods[primitive_info->method]);
5293 return;
5294 }
5295 case ColorPrimitive:
5296 {
5297 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5298 "ColorPrimitive %.20g,%.20g %s",(double) x,(double) y,
5299 methods[primitive_info->method]);
5300 return;
5301 }
5302 case ImagePrimitive:
5303 {
5304 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5305 "ImagePrimitive %.20g,%.20g",(double) x,(double) y);
5306 return;
5307 }
5308 case PointPrimitive:
5309 {
5310 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5311 "PointPrimitive %.20g,%.20g %s",(double) x,(double) y,
5312 methods[primitive_info->method]);
5313 return;
5314 }
5315 case TextPrimitive:
5316 {
5317 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5318 "TextPrimitive %.20g,%.20g",(double) x,(double) y);
5319 return;
5320 }
5321 default:
5322 break;
5323 }
5324 coordinates=0;
5325 p=primitive_info[0].point;
5326 q.x=(-1.0);
5327 q.y=(-1.0);
5328 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
5329 {
5330 point=primitive_info[i].point;
5331 if (coordinates <= 0)
5332 {
5333 coordinates=(ssize_t) primitive_info[i].coordinates;
5334 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5335 " begin open (%.20g)",(double) coordinates);
5336 p=point;
5337 }
5338 point=primitive_info[i].point;
5339 if ((fabs(q.x-point.x) >= MagickEpsilon) ||
5340 (fabs(q.y-point.y) >= MagickEpsilon))
5341 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5342 " %.20g: %.18g,%.18g",(double) coordinates,point.x,point.y);
5343 else
5344 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5345 " %.20g: %g %g (duplicate)",(double) coordinates,point.x,point.y);
5346 q=point;
5347 coordinates--;
5348 if (coordinates > 0)
5349 continue;
5350 if ((fabs(p.x-point.x) >= MagickEpsilon) ||
5351 (fabs(p.y-point.y) >= MagickEpsilon))
5352 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end last (%.20g)",
5353 (double) coordinates);
5354 else
5355 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end open (%.20g)",
5356 (double) coordinates);
5357 }
5358}
5359
5360MagickExport MagickBooleanType DrawPrimitive(Image *image,
5361 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info,
5362 ExceptionInfo *exception)
5363{
5364 CacheView
5365 *image_view;
5366
5367 MagickStatusType
5368 status;
5369
5370 ssize_t
5371 i,
5372 x;
5373
5374 ssize_t
5375 y;
5376
5377 if (draw_info->debug != MagickFalse)
5378 {
5379 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5380 " begin draw-primitive");
5381 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5382 " affine: %g,%g,%g,%g,%g,%g",draw_info->affine.sx,
5383 draw_info->affine.rx,draw_info->affine.ry,draw_info->affine.sy,
5384 draw_info->affine.tx,draw_info->affine.ty);
5385 }
5386 status=MagickTrue;
5387 if ((IsGrayColorspace(image->colorspace) != MagickFalse) &&
5388 ((IsPixelInfoGray(&draw_info->fill) == MagickFalse) ||
5389 (IsPixelInfoGray(&draw_info->stroke) == MagickFalse)))
5390 status&=(MagickStatusType) SetImageColorspace(image,sRGBColorspace,
5391 exception);
5392 if (draw_info->compliance == SVGCompliance)
5393 {
5394 status&=(MagickStatusType) SetImageMask(image,WritePixelMask,
5395 draw_info->clipping_mask,exception);
5396 status&=(MagickStatusType) SetImageMask(image,CompositePixelMask,
5397 draw_info->composite_mask,exception);
5398 }
5399 x=CastDoubleToSsizeT(ceil(primitive_info->point.x-0.5));
5400 y=CastDoubleToSsizeT(ceil(primitive_info->point.y-0.5));
5401 image_view=AcquireAuthenticCacheView(image,exception);
5402 switch (primitive_info->primitive)
5403 {
5404 case AlphaPrimitive:
5405 {
5406 if ((image->alpha_trait & BlendPixelTrait) == 0)
5407 status&=(MagickStatusType) SetImageAlphaChannel(image,
5408 OpaqueAlphaChannel,exception);
5409 switch (primitive_info->method)
5410 {
5411 case PointMethod:
5412 default:
5413 {
5414 PixelInfo
5415 pixel;
5416
5417 Quantum
5418 *q;
5419
5420 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5421 if (q == (Quantum *) NULL)
5422 break;
5423 GetFillColor(draw_info,x,y,&pixel,exception);
5424 SetPixelAlpha(image,ClampToQuantum(pixel.alpha),q);
5425 status&=(MagickStatusType) SyncCacheViewAuthenticPixels(image_view,
5426 exception);
5427 break;
5428 }
5429 case ReplaceMethod:
5430 {
5431 PixelInfo
5432 pixel,
5433 target;
5434
5435 status&=(MagickStatusType) GetOneCacheViewVirtualPixelInfo(image_view,
5436 x,y,&target,exception);
5437 GetPixelInfo(image,&pixel);
5438 for (y=0; y < (ssize_t) image->rows; y++)
5439 {
5440 Quantum
5441 *magick_restrict q;
5442
5443 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5444 exception);
5445 if (q == (Quantum *) NULL)
5446 break;
5447 for (x=0; x < (ssize_t) image->columns; x++)
5448 {
5449 GetPixelInfoPixel(image,q,&pixel);
5450 if (IsFuzzyEquivalencePixelInfo(&pixel,&target) == MagickFalse)
5451 {
5452 q+=(ptrdiff_t) GetPixelChannels(image);
5453 continue;
5454 }
5455 GetFillColor(draw_info,x,y,&pixel,exception);
5456 SetPixelAlpha(image,ClampToQuantum(pixel.alpha),q);
5457 q+=(ptrdiff_t) GetPixelChannels(image);
5458 }
5459 status&=(MagickStatusType) SyncCacheViewAuthenticPixels(image_view,
5460 exception);
5461 if (status == MagickFalse)
5462 break;
5463 }
5464 break;
5465 }
5466 case FloodfillMethod:
5467 case FillToBorderMethod:
5468 {
5469 ChannelType
5470 channel_mask;
5471
5472 PixelInfo
5473 target;
5474
5475 status&=(MagickStatusType) GetOneVirtualPixelInfo(image,
5476 TileVirtualPixelMethod,x,y,&target,exception);
5477 if (primitive_info->method == FillToBorderMethod)
5478 {
5479 target.red=(double) draw_info->border_color.red;
5480 target.green=(double) draw_info->border_color.green;
5481 target.blue=(double) draw_info->border_color.blue;
5482 }
5483 channel_mask=SetImageChannelMask(image,AlphaChannel);
5484 status&=(MagickStatusType) FloodfillPaintImage(image,draw_info,
5485 &target,x,y,primitive_info->method == FloodfillMethod ?
5486 MagickFalse : MagickTrue,exception);
5487 (void) SetImageChannelMask(image,channel_mask);
5488 break;
5489 }
5490 case ResetMethod:
5491 {
5492 PixelInfo
5493 pixel;
5494
5495 for (y=0; y < (ssize_t) image->rows; y++)
5496 {
5497 Quantum
5498 *magick_restrict q;
5499
5500 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5501 exception);
5502 if (q == (Quantum *) NULL)
5503 break;
5504 for (x=0; x < (ssize_t) image->columns; x++)
5505 {
5506 GetFillColor(draw_info,x,y,&pixel,exception);
5507 SetPixelAlpha(image,ClampToQuantum(pixel.alpha),q);
5508 q+=(ptrdiff_t) GetPixelChannels(image);
5509 }
5510 status&=(MagickStatusType) SyncCacheViewAuthenticPixels(image_view,
5511 exception);
5512 if (status == MagickFalse)
5513 break;
5514 }
5515 break;
5516 }
5517 }
5518 break;
5519 }
5520 case ColorPrimitive:
5521 {
5522 switch (primitive_info->method)
5523 {
5524 case PointMethod:
5525 default:
5526 {
5527 PixelInfo
5528 pixel;
5529
5530 Quantum
5531 *q;
5532
5533 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5534 if (q == (Quantum *) NULL)
5535 break;
5536 GetPixelInfo(image,&pixel);
5537 GetFillColor(draw_info,x,y,&pixel,exception);
5538 SetPixelViaPixelInfo(image,&pixel,q);
5539 status&=(MagickStatusType) SyncCacheViewAuthenticPixels(image_view,
5540 exception);
5541 break;
5542 }
5543 case ReplaceMethod:
5544 {
5545 PixelInfo
5546 pixel,
5547 target;
5548
5549 status&=(MagickStatusType) GetOneCacheViewVirtualPixelInfo(image_view,
5550 x,y,&target,exception);
5551 for (y=0; y < (ssize_t) image->rows; y++)
5552 {
5553 Quantum
5554 *magick_restrict q;
5555
5556 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5557 exception);
5558 if (q == (Quantum *) NULL)
5559 break;
5560 for (x=0; x < (ssize_t) image->columns; x++)
5561 {
5562 GetPixelInfoPixel(image,q,&pixel);
5563 if (IsFuzzyEquivalencePixelInfo(&pixel,&target) == MagickFalse)
5564 {
5565 q+=(ptrdiff_t) GetPixelChannels(image);
5566 continue;
5567 }
5568 GetFillColor(draw_info,x,y,&pixel,exception);
5569 SetPixelViaPixelInfo(image,&pixel,q);
5570 q+=(ptrdiff_t) GetPixelChannels(image);
5571 }
5572 status&=(MagickStatusType) SyncCacheViewAuthenticPixels(image_view,
5573 exception);
5574 if (status == MagickFalse)
5575 break;
5576 }
5577 break;
5578 }
5579 case FloodfillMethod:
5580 case FillToBorderMethod:
5581 {
5582 PixelInfo
5583 target;
5584
5585 status&=(MagickStatusType) GetOneVirtualPixelInfo(image,
5586 TileVirtualPixelMethod,x,y,&target,exception);
5587 if (primitive_info->method == FillToBorderMethod)
5588 {
5589 target.red=(double) draw_info->border_color.red;
5590 target.green=(double) draw_info->border_color.green;
5591 target.blue=(double) draw_info->border_color.blue;
5592 }
5593 status&=(MagickStatusType) FloodfillPaintImage(image,draw_info,
5594 &target,x,y,primitive_info->method == FloodfillMethod ?
5595 MagickFalse : MagickTrue,exception);
5596 break;
5597 }
5598 case ResetMethod:
5599 {
5600 PixelInfo
5601 pixel;
5602
5603 GetPixelInfo(image,&pixel);
5604 for (y=0; y < (ssize_t) image->rows; y++)
5605 {
5606 Quantum
5607 *magick_restrict q;
5608
5609 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5610 exception);
5611 if (q == (Quantum *) NULL)
5612 break;
5613 for (x=0; x < (ssize_t) image->columns; x++)
5614 {
5615 GetFillColor(draw_info,x,y,&pixel,exception);
5616 SetPixelViaPixelInfo(image,&pixel,q);
5617 q+=(ptrdiff_t) GetPixelChannels(image);
5618 }
5619 status&=(MagickStatusType) SyncCacheViewAuthenticPixels(image_view,
5620 exception);
5621 if (status == MagickFalse)
5622 break;
5623 }
5624 break;
5625 }
5626 }
5627 break;
5628 }
5629 case ImagePrimitive:
5630 {
5631 AffineMatrix
5632 affine;
5633
5634 char
5635 composite_geometry[MagickPathExtent];
5636
5637 Image
5638 *composite_image,
5639 *composite_images;
5640
5641 ImageInfo
5642 *clone_info;
5643
5644 RectangleInfo
5645 geometry;
5646
5647 ssize_t
5648 x1,
5649 y1;
5650
5651 if (primitive_info->text == (char *) NULL)
5652 break;
5653 clone_info=AcquireImageInfo();
5654 composite_images=(Image *) NULL;
5655 if (LocaleNCompare(primitive_info->text,"data:",5) == 0)
5656 composite_images=ReadInlineImage(clone_info,primitive_info->text,
5657 exception);
5658 else
5659 if (*primitive_info->text != '\0')
5660 {
5661 /*
5662 Read composite image.
5663 */
5664 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5665 MagickPathExtent);
5666 (void) SetImageInfo(clone_info,1,exception);
5667 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5668 MagickPathExtent);
5669 if (clone_info->size != (char *) NULL)
5670 clone_info->size=DestroyString(clone_info->size);
5671 if (clone_info->extract != (char *) NULL)
5672 clone_info->extract=DestroyString(clone_info->extract);
5673 if ((LocaleCompare(clone_info->magick,"ftp") != 0) &&
5674 (LocaleCompare(clone_info->magick,"http") != 0) &&
5675 (LocaleCompare(clone_info->magick,"https") != 0) &&
5676 (LocaleCompare(clone_info->magick,"mvg") != 0) &&
5677 (LocaleCompare(clone_info->magick,"vid") != 0))
5678 composite_images=ReadImage(clone_info,exception);
5679 else
5680 (void) ThrowMagickException(exception,GetMagickModule(),
5681 FileOpenError,"UnableToOpenFile","`%s'",clone_info->filename);
5682 }
5683 clone_info=DestroyImageInfo(clone_info);
5684 if (composite_images == (Image *) NULL)
5685 {
5686 status=MagickFalse;
5687 break;
5688 }
5689 composite_image=RemoveFirstImageFromList(&composite_images);
5690 composite_images=DestroyImageList(composite_images);
5691 (void) SetImageProgressMonitor(composite_image,(MagickProgressMonitor)
5692 NULL,(void *) NULL);
5693 x1=CastDoubleToSsizeT(ceil(primitive_info[1].point.x-0.5));
5694 y1=CastDoubleToSsizeT(ceil(primitive_info[1].point.y-0.5));
5695 if (((x1 != 0L) && (x1 != (ssize_t) composite_image->columns)) ||
5696 ((y1 != 0L) && (y1 != (ssize_t) composite_image->rows)))
5697 {
5698 /*
5699 Resize image.
5700 */
5701 (void) FormatLocaleString(composite_geometry,MagickPathExtent,
5702 "%gx%g!",primitive_info[1].point.x,primitive_info[1].point.y);
5703 composite_image->filter=image->filter;
5704 status&=(MagickStatusType) TransformImage(&composite_image,
5705 (char *) NULL,composite_geometry,exception);
5706 }
5707 if (composite_image->alpha_trait == UndefinedPixelTrait)
5708 status&=(MagickStatusType) SetImageAlphaChannel(composite_image,
5709 OpaqueAlphaChannel,exception);
5710 if (draw_info->alpha != OpaqueAlpha)
5711 status&=(MagickStatusType) SetImageAlpha(composite_image,
5712 draw_info->alpha,exception);
5713 SetGeometry(image,&geometry);
5714 image->gravity=draw_info->gravity;
5715 geometry.x=x;
5716 geometry.y=y;
5717 (void) FormatLocaleString(composite_geometry,MagickPathExtent,
5718 "%.20gx%.20g%+.20g%+.20g",(double) composite_image->columns,(double)
5719 composite_image->rows,(double) geometry.x,(double) geometry.y);
5720 (void) ParseGravityGeometry(image,composite_geometry,&geometry,exception);
5721 affine=draw_info->affine;
5722 affine.tx=(double) geometry.x;
5723 affine.ty=(double) geometry.y;
5724 composite_image->interpolate=image->interpolate;
5725 if ((draw_info->compose == OverCompositeOp) ||
5726 (draw_info->compose == SrcOverCompositeOp))
5727 status&=(MagickStatusType) DrawAffineImage(image,composite_image,
5728 &affine,exception);
5729 else
5730 status&=(MagickStatusType) CompositeImage(image,composite_image,
5731 draw_info->compose,MagickTrue,geometry.x,geometry.y,exception);
5732 composite_image=DestroyImage(composite_image);
5733 break;
5734 }
5735 case PointPrimitive:
5736 {
5737 PixelInfo
5738 fill_color;
5739
5740 Quantum
5741 *q;
5742
5743 if ((y < 0) || (y >= (ssize_t) image->rows))
5744 break;
5745 if ((x < 0) || (x >= (ssize_t) image->columns))
5746 break;
5747 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5748 if (q == (Quantum *) NULL)
5749 break;
5750 GetFillColor(draw_info,x,y,&fill_color,exception);
5751 CompositePixelOver(image,&fill_color,(double) fill_color.alpha,q,(double)
5752 GetPixelAlpha(image,q),q);
5753 status&=(MagickStatusType) SyncCacheViewAuthenticPixels(image_view,
5754 exception);
5755 break;
5756 }
5757 case TextPrimitive:
5758 {
5759 char
5760 geometry[MagickPathExtent];
5761
5762 DrawInfo
5763 *clone_info;
5764
5765 if (primitive_info->text == (char *) NULL)
5766 break;
5767 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5768 (void) CloneString(&clone_info->text,primitive_info->text);
5769 (void) FormatLocaleString(geometry,MagickPathExtent,"%+f%+f",
5770 primitive_info->point.x,primitive_info->point.y);
5771 (void) CloneString(&clone_info->geometry,geometry);
5772 status&=(MagickStatusType) AnnotateImage(image,clone_info,exception);
5773 clone_info=DestroyDrawInfo(clone_info);
5774 break;
5775 }
5776 default:
5777 {
5778 double
5779 mid,
5780 scale;
5781
5782 DrawInfo
5783 *clone_info;
5784
5785 if (IsEventLogging() != MagickFalse)
5786 LogPrimitiveInfo(primitive_info);
5787 scale=ExpandAffine(&draw_info->affine);
5788 if ((draw_info->dash_pattern != (double *) NULL) &&
5789 (fabs(draw_info->dash_pattern[0]) >= MagickEpsilon) &&
5790 (fabs(scale*draw_info->stroke_width) >= MagickEpsilon) &&
5791 (draw_info->stroke.alpha != (double) TransparentAlpha))
5792 {
5793 /*
5794 Draw dash polygon.
5795 */
5796 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5797 clone_info->stroke_width=0.0;
5798 clone_info->stroke.alpha=(MagickRealType) TransparentAlpha;
5799 status&=(MagickStatusType) DrawPolygonPrimitive(image,clone_info,
5800 primitive_info,exception);
5801 clone_info=DestroyDrawInfo(clone_info);
5802 if (status != MagickFalse)
5803 status&=(MagickStatusType) DrawDashPolygon(draw_info,primitive_info,
5804 image,exception);
5805 break;
5806 }
5807 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
5808 if ((mid > 1.0) &&
5809 ((draw_info->stroke.alpha != (double) TransparentAlpha) ||
5810 (draw_info->stroke_pattern != (Image *) NULL)))
5811 {
5812 double
5813 point_x,
5814 point_y;
5815
5816 MagickBooleanType
5817 closed_path;
5818
5819 /*
5820 Draw strokes while respecting line cap/join attributes.
5821 */
5822 closed_path=primitive_info[0].closed_subpath;
5823 i=(ssize_t) primitive_info[0].coordinates;
5824 point_x=fabs(primitive_info[i-1].point.x-primitive_info[0].point.x);
5825 point_y=fabs(primitive_info[i-1].point.y-primitive_info[0].point.y);
5826 if ((point_x < MagickEpsilon) && (point_y < MagickEpsilon))
5827 closed_path=MagickTrue;
5828 if ((((draw_info->linecap == RoundCap) ||
5829 (closed_path != MagickFalse)) &&
5830 (draw_info->linejoin == RoundJoin)) ||
5831 (primitive_info[i].primitive != UndefinedPrimitive))
5832 {
5833 status&=(MagickStatusType) DrawPolygonPrimitive(image,draw_info,
5834 primitive_info,exception);
5835 break;
5836 }
5837 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5838 clone_info->stroke_width=0.0;
5839 clone_info->stroke.alpha=(MagickRealType) TransparentAlpha;
5840 status&=(MagickStatusType) DrawPolygonPrimitive(image,clone_info,
5841 primitive_info,exception);
5842 clone_info=DestroyDrawInfo(clone_info);
5843 if (status != MagickFalse)
5844 status&=(MagickStatusType) DrawStrokePolygon(image,draw_info,
5845 primitive_info,exception);
5846 break;
5847 }
5848 status&=(MagickStatusType) DrawPolygonPrimitive(image,draw_info,
5849 primitive_info,exception);
5850 break;
5851 }
5852 }
5853 image_view=DestroyCacheView(image_view);
5854 if (draw_info->compliance == SVGCompliance)
5855 {
5856 status&=(MagickStatusType) SetImageMask(image,WritePixelMask,
5857 (Image *) NULL,exception);
5858 status&=(MagickStatusType) SetImageMask(image,CompositePixelMask,
5859 (Image *) NULL,exception);
5860 }
5861 if (draw_info->debug != MagickFalse)
5862 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-primitive");
5863 return(status != 0 ? MagickTrue : MagickFalse);
5864}
5865␌
5866/*
5867%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5868% %
5869% %
5870% %
5871+ D r a w S t r o k e P o l y g o n %
5872% %
5873% %
5874% %
5875%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5876%
5877% DrawStrokePolygon() draws a stroked polygon (line, rectangle, ellipse) on
5878% the image while respecting the line cap and join attributes.
5879%
5880% The format of the DrawStrokePolygon method is:
5881%
5882% MagickBooleanType DrawStrokePolygon(Image *image,
5883% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5884%
5885% A description of each parameter follows:
5886%
5887% o image: the image.
5888%
5889% o draw_info: the draw info.
5890%
5891% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5892%
5893%
5894*/
5895
5896static MagickBooleanType DrawRoundLinecap(Image *image,
5897 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info,
5898 ExceptionInfo *exception)
5899{
5900 PrimitiveInfo
5901 linecap[5];
5902
5903 ssize_t
5904 i;
5905
5906 for (i=0; i < 4; i++)
5907 linecap[i]=(*primitive_info);
5908 linecap[0].coordinates=4;
5909 linecap[1].point.x+=2.0*MagickEpsilon;
5910 linecap[2].point.x+=2.0*MagickEpsilon;
5911 linecap[2].point.y+=2.0*MagickEpsilon;
5912 linecap[3].point.y+=2.0*MagickEpsilon;
5913 linecap[4].primitive=UndefinedPrimitive;
5914 return(DrawPolygonPrimitive(image,draw_info,linecap,exception));
5915}
5916
5917static MagickBooleanType DrawStrokePolygon(Image *image,
5918 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info,
5919 ExceptionInfo *exception)
5920{
5921 DrawInfo
5922 *clone_info;
5923
5924 MagickBooleanType
5925 closed_path;
5926
5927 MagickStatusType
5928 status;
5929
5930 PrimitiveInfo
5931 *stroke_polygon;
5932
5933 const PrimitiveInfo
5934 *p,
5935 *q;
5936
5937 /*
5938 Draw stroked polygon.
5939 */
5940 if (draw_info->debug != MagickFalse)
5941 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5942 " begin draw-stroke-polygon");
5943 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5944 clone_info->fill=draw_info->stroke;
5945 if (clone_info->fill_pattern != (Image *) NULL)
5946 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
5947 if (clone_info->stroke_pattern != (Image *) NULL)
5948 clone_info->fill_pattern=CloneImage(clone_info->stroke_pattern,0,0,
5949 MagickTrue,exception);
5950 clone_info->stroke.alpha=(MagickRealType) TransparentAlpha;
5951 clone_info->stroke_width=0.0;
5952 clone_info->fill_rule=NonZeroRule;
5953 status=MagickTrue;
5954 for (p=primitive_info; p->primitive != UndefinedPrimitive; p+=(ptrdiff_t) p->coordinates)
5955 {
5956 if (p->coordinates == 1)
5957 continue;
5958 stroke_polygon=TraceStrokePolygon(draw_info,p,exception);
5959 if (stroke_polygon == (PrimitiveInfo *) NULL)
5960 {
5961 status=0;
5962 break;
5963 }
5964 status&=(MagickStatusType) DrawPolygonPrimitive(image,clone_info,
5965 stroke_polygon,exception);
5966 stroke_polygon=(PrimitiveInfo *) RelinquishMagickMemory(stroke_polygon);
5967 if (status == 0)
5968 break;
5969 q=p+p->coordinates-1;
5970 closed_path=p->closed_subpath;
5971 if ((draw_info->linecap == RoundCap) && (closed_path == MagickFalse))
5972 {
5973 status&=(MagickStatusType) DrawRoundLinecap(image,draw_info,p,
5974 exception);
5975 status&=(MagickStatusType) DrawRoundLinecap(image,draw_info,q,
5976 exception);
5977 }
5978 }
5979 clone_info=DestroyDrawInfo(clone_info);
5980 if (draw_info->debug != MagickFalse)
5981 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5982 " end draw-stroke-polygon");
5983 return(status != 0 ? MagickTrue : MagickFalse);
5984}
5985␌
5986/*
5987%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5988% %
5989% %
5990% %
5991% G e t A f f i n e M a t r i x %
5992% %
5993% %
5994% %
5995%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5996%
5997% GetAffineMatrix() returns an AffineMatrix initialized to the identity
5998% matrix.
5999%
6000% The format of the GetAffineMatrix method is:
6001%
6002% void GetAffineMatrix(AffineMatrix *affine_matrix)
6003%
6004% A description of each parameter follows:
6005%
6006% o affine_matrix: the affine matrix.
6007%
6008*/
6009MagickExport void GetAffineMatrix(AffineMatrix *affine_matrix)
6010{
6011 if (IsEventLogging() != MagickFalse)
6012 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
6013 assert(affine_matrix != (AffineMatrix *) NULL);
6014 (void) memset(affine_matrix,0,sizeof(*affine_matrix));
6015 affine_matrix->sx=1.0;
6016 affine_matrix->sy=1.0;
6017}
6018␌
6019/*
6020%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6021% %
6022% %
6023% %
6024+ G e t D r a w I n f o %
6025% %
6026% %
6027% %
6028%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6029%
6030% GetDrawInfo() initializes draw_info to default values from image_info.
6031%
6032% The format of the GetDrawInfo method is:
6033%
6034% void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
6035%
6036% A description of each parameter follows:
6037%
6038% o image_info: the image info..
6039%
6040% o draw_info: the draw info.
6041%
6042*/
6043MagickExport void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
6044{
6045 char
6046 *next_token;
6047
6048 const char
6049 *option;
6050
6051 ExceptionInfo
6052 *exception;
6053
6054 /*
6055 Initialize draw attributes.
6056 */
6057 assert(draw_info != (DrawInfo *) NULL);
6058 if (IsEventLogging() != MagickFalse)
6059 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
6060 (void) memset(draw_info,0,sizeof(*draw_info));
6061 draw_info->image_info=CloneImageInfo(image_info);
6062 GetAffineMatrix(&draw_info->affine);
6063 exception=AcquireExceptionInfo();
6064 (void) QueryColorCompliance("#000F",AllCompliance,&draw_info->fill,
6065 exception);
6066 (void) QueryColorCompliance("#FFF0",AllCompliance,&draw_info->stroke,
6067 exception);
6068 draw_info->stroke_antialias=draw_info->image_info->antialias;
6069 draw_info->stroke_width=1.0;
6070 draw_info->fill_rule=EvenOddRule;
6071 draw_info->alpha=OpaqueAlpha;
6072 draw_info->fill_alpha=OpaqueAlpha;
6073 draw_info->stroke_alpha=OpaqueAlpha;
6074 draw_info->linecap=ButtCap;
6075 draw_info->linejoin=MiterJoin;
6076 draw_info->miterlimit=10;
6077 draw_info->decorate=NoDecoration;
6078 draw_info->pointsize=12.0;
6079 draw_info->undercolor.alpha=(MagickRealType) TransparentAlpha;
6080 draw_info->compose=OverCompositeOp;
6081 draw_info->render=MagickTrue;
6082 draw_info->clip_path=MagickFalse;
6083 draw_info->debug=(GetLogEventMask() & (DrawEvent | AnnotateEvent)) != 0 ?
6084 MagickTrue : MagickFalse;
6085 if (draw_info->image_info->font != (char *) NULL)
6086 draw_info->font=AcquireString(draw_info->image_info->font);
6087 if (draw_info->image_info->density != (char *) NULL)
6088 draw_info->density=AcquireString(draw_info->image_info->density);
6089 draw_info->text_antialias=draw_info->image_info->antialias;
6090 if (fabs(draw_info->image_info->pointsize) >= MagickEpsilon)
6091 draw_info->pointsize=draw_info->image_info->pointsize;
6092 draw_info->border_color=draw_info->image_info->border_color;
6093 if (draw_info->image_info->server_name != (char *) NULL)
6094 draw_info->server_name=AcquireString(draw_info->image_info->server_name);
6095 option=GetImageOption(draw_info->image_info,"direction");
6096 if (option != (const char *) NULL)
6097 draw_info->direction=(DirectionType) ParseCommandOption(
6098 MagickDirectionOptions,MagickFalse,option);
6099 else
6100 draw_info->direction=UndefinedDirection;
6101 option=GetImageOption(draw_info->image_info,"encoding");
6102 if (option != (const char *) NULL)
6103 (void) CloneString(&draw_info->encoding,option);
6104 option=GetImageOption(draw_info->image_info,"family");
6105 if (option != (const char *) NULL)
6106 (void) CloneString(&draw_info->family,option);
6107 option=GetImageOption(draw_info->image_info,"fill");
6108 if (option != (const char *) NULL)
6109 (void) QueryColorCompliance(option,AllCompliance,&draw_info->fill,
6110 exception);
6111 option=GetImageOption(draw_info->image_info,"gravity");
6112 if (option != (const char *) NULL)
6113 draw_info->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
6114 MagickFalse,option);
6115 option=GetImageOption(draw_info->image_info,"interline-spacing");
6116 if (option != (const char *) NULL)
6117 draw_info->interline_spacing=GetDrawValue(option,&next_token);
6118 option=GetImageOption(draw_info->image_info,"interword-spacing");
6119 if (option != (const char *) NULL)
6120 draw_info->interword_spacing=GetDrawValue(option,&next_token);
6121 option=GetImageOption(draw_info->image_info,"kerning");
6122 if (option != (const char *) NULL)
6123 draw_info->kerning=GetDrawValue(option,&next_token);
6124 option=GetImageOption(draw_info->image_info,"stroke");
6125 if (option != (const char *) NULL)
6126 (void) QueryColorCompliance(option,AllCompliance,&draw_info->stroke,
6127 exception);
6128 option=GetImageOption(draw_info->image_info,"strokewidth");
6129 if (option != (const char *) NULL)
6130 draw_info->stroke_width=GetDrawValue(option,&next_token);
6131 option=GetImageOption(draw_info->image_info,"style");
6132 if (option != (const char *) NULL)
6133 draw_info->style=(StyleType) ParseCommandOption(MagickStyleOptions,
6134 MagickFalse,option);
6135 option=GetImageOption(draw_info->image_info,"undercolor");
6136 if (option != (const char *) NULL)
6137 (void) QueryColorCompliance(option,AllCompliance,&draw_info->undercolor,
6138 exception);
6139 option=GetImageOption(draw_info->image_info,"weight");
6140 if (option != (const char *) NULL)
6141 {
6142 ssize_t
6143 weight;
6144
6145 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,option);
6146 if (weight == -1)
6147 weight=(ssize_t) StringToUnsignedLong(option);
6148 draw_info->weight=(size_t) weight;
6149 }
6150 option=GetImageOption(draw_info->image_info,"word-break");
6151 if (option != (const char *) NULL)
6152 draw_info->word_break=(WordBreakType) ParseCommandOption(
6153 MagickWordBreakOptions,MagickFalse,option);
6154 exception=DestroyExceptionInfo(exception);
6155 draw_info->signature=MagickCoreSignature;
6156}
6157␌
6158/*
6159%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6160% %
6161% %
6162% %
6163+ P e r m u t a t e %
6164% %
6165% %
6166% %
6167%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6168%
6169% Permutate() returns the permutation of the (n,k).
6170%
6171% The format of the Permutate method is:
6172%
6173% void Permutate(ssize_t n,ssize_t k)
6174%
6175% A description of each parameter follows:
6176%
6177% o n:
6178%
6179% o k:
6180%
6181%
6182*/
6183static inline double Permutate(const ssize_t n,const ssize_t k)
6184{
6185 double
6186 r;
6187
6188 ssize_t
6189 i;
6190
6191 r=1.0;
6192 for (i=k+1; i <= n; i++)
6193 r*=i;
6194 for (i=1; i <= (n-k); i++)
6195 r/=i;
6196 return(r);
6197}
6198␌
6199/*
6200%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6201% %
6202% %
6203% %
6204+ T r a c e P r i m i t i v e %
6205% %
6206% %
6207% %
6208%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6209%
6210% TracePrimitive is a collection of methods for generating graphic
6211% primitives such as arcs, ellipses, paths, etc.
6212%
6213*/
6214
6215static MagickBooleanType TraceArc(MVGInfo *mvg_info,const PointInfo start,
6216 const PointInfo end,const PointInfo degrees)
6217{
6218 PointInfo
6219 center,
6220 radius;
6221
6222 center.x=0.5*(end.x+start.x);
6223 center.y=0.5*(end.y+start.y);
6224 radius.x=fabs(center.x-start.x);
6225 radius.y=fabs(center.y-start.y);
6226 return(TraceEllipse(mvg_info,center,radius,degrees));
6227}
6228
6229static MagickBooleanType TraceArcPath(MVGInfo *mvg_info,const PointInfo start,
6230 const PointInfo end,const PointInfo arc,const double angle,
6231 const MagickBooleanType large_arc,const MagickBooleanType sweep)
6232{
6233 double
6234 alpha,
6235 beta,
6236 delta,
6237 factor,
6238 gamma,
6239 theta;
6240
6241 MagickStatusType
6242 status;
6243
6244 PointInfo
6245 center,
6246 points[3],
6247 radii;
6248
6249 double
6250 cosine,
6251 sine;
6252
6253 PrimitiveInfo
6254 *primitive_info;
6255
6256 PrimitiveInfo
6257 *p;
6258
6259 ssize_t
6260 i;
6261
6262 size_t
6263 arc_segments;
6264
6265 ssize_t
6266 offset;
6267
6268 offset=mvg_info->offset;
6269 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6270 primitive_info->coordinates=0;
6271 if ((fabs(start.x-end.x) < MagickEpsilon) &&
6272 (fabs(start.y-end.y) < MagickEpsilon))
6273 return(TracePoint(primitive_info,end));
6274 radii.x=fabs(arc.x);
6275 radii.y=fabs(arc.y);
6276 if ((radii.x < MagickEpsilon) || (radii.y < MagickEpsilon))
6277 return(TraceLine(primitive_info,start,end));
6278 cosine=cos(DegreesToRadians(fmod((double) angle,360.0)));
6279 sine=sin(DegreesToRadians(fmod((double) angle,360.0)));
6280 center.x=(double) (cosine*(end.x-start.x)/2+sine*(end.y-start.y)/2);
6281 center.y=(double) (cosine*(end.y-start.y)/2-sine*(end.x-start.x)/2);
6282 delta=(center.x*center.x)/(radii.x*radii.x)+(center.y*center.y)/
6283 (radii.y*radii.y);
6284 if (delta < MagickEpsilon)
6285 return(TraceLine(primitive_info,start,end));
6286 if (delta > 1.0)
6287 {
6288 radii.x*=sqrt((double) delta);
6289 radii.y*=sqrt((double) delta);
6290 }
6291 points[0].x=(double) (cosine*start.x/radii.x+sine*start.y/radii.x);
6292 points[0].y=(double) (cosine*start.y/radii.y-sine*start.x/radii.y);
6293 points[1].x=(double) (cosine*end.x/radii.x+sine*end.y/radii.x);
6294 points[1].y=(double) (cosine*end.y/radii.y-sine*end.x/radii.y);
6295 alpha=points[1].x-points[0].x;
6296 beta=points[1].y-points[0].y;
6297 if (fabs(alpha*alpha+beta*beta) < MagickEpsilon)
6298 return(TraceLine(primitive_info,start,end));
6299 factor=MagickSafeReciprocal(alpha*alpha+beta*beta)-0.25;
6300 if (factor <= 0.0)
6301 factor=0.0;
6302 else
6303 {
6304 factor=sqrt((double) factor);
6305 if (sweep == large_arc)
6306 factor=(-factor);
6307 }
6308 center.x=(double) ((points[0].x+points[1].x)/2-factor*beta);
6309 center.y=(double) ((points[0].y+points[1].y)/2+factor*alpha);
6310 alpha=atan2(points[0].y-center.y,points[0].x-center.x);
6311 theta=atan2(points[1].y-center.y,points[1].x-center.x)-alpha;
6312 if ((theta < 0.0) && (sweep != MagickFalse))
6313 theta+=2.0*MagickPI;
6314 else
6315 if ((theta > 0.0) && (sweep == MagickFalse))
6316 theta-=2.0*MagickPI;
6317 arc_segments=(size_t) CastDoubleToSsizeT(ceil(fabs((double) (theta/(0.5*
6318 MagickPI+MagickEpsilon)))));
6319 status=MagickTrue;
6320 p=primitive_info;
6321 for (i=0; i < (ssize_t) arc_segments; i++)
6322 {
6323 beta=0.5*((alpha+(i+1)*theta/arc_segments)-(alpha+i*theta/arc_segments));
6324 gamma=(8.0/3.0)*sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))*
6325 sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))/
6326 sin(fmod((double) beta,DegreesToRadians(360.0)));
6327 points[0].x=(double) (center.x+cos(fmod((double) (alpha+(double) i*theta/
6328 arc_segments),DegreesToRadians(360.0)))-gamma*sin(fmod((double) (alpha+
6329 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6330 points[0].y=(double) (center.y+sin(fmod((double) (alpha+(double) i*theta/
6331 arc_segments),DegreesToRadians(360.0)))+gamma*cos(fmod((double) (alpha+
6332 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6333 points[2].x=(double) (center.x+cos(fmod((double) (alpha+(double) (i+1)*
6334 theta/arc_segments),DegreesToRadians(360.0))));
6335 points[2].y=(double) (center.y+sin(fmod((double) (alpha+(double) (i+1)*
6336 theta/arc_segments),DegreesToRadians(360.0))));
6337 points[1].x=(double) (points[2].x+gamma*sin(fmod((double) (alpha+(double)
6338 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6339 points[1].y=(double) (points[2].y-gamma*cos(fmod((double) (alpha+(double)
6340 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6341 p->point.x=(p == primitive_info) ? start.x : (p-1)->point.x;
6342 p->point.y=(p == primitive_info) ? start.y : (p-1)->point.y;
6343 (p+1)->point.x=(double) (cosine*radii.x*points[0].x-sine*radii.y*
6344 points[0].y);
6345 (p+1)->point.y=(double) (sine*radii.x*points[0].x+cosine*radii.y*
6346 points[0].y);
6347 (p+2)->point.x=(double) (cosine*radii.x*points[1].x-sine*radii.y*
6348 points[1].y);
6349 (p+2)->point.y=(double) (sine*radii.x*points[1].x+cosine*radii.y*
6350 points[1].y);
6351 (p+3)->point.x=(double) (cosine*radii.x*points[2].x-sine*radii.y*
6352 points[2].y);
6353 (p+3)->point.y=(double) (sine*radii.x*points[2].x+cosine*radii.y*
6354 points[2].y);
6355 if (i == (ssize_t) (arc_segments-1))
6356 (p+3)->point=end;
6357 status&=(MagickStatusType) TraceBezier(mvg_info,4);
6358 if (status == 0)
6359 break;
6360 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
6361 mvg_info->offset+=(ssize_t) p->coordinates;
6362 p+=(ptrdiff_t) p->coordinates;
6363 }
6364 if (status == 0)
6365 return(MagickFalse);
6366 mvg_info->offset=offset;
6367 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6368 primitive_info->coordinates=(size_t) (p-primitive_info);
6369 primitive_info->closed_subpath=MagickFalse;
6370 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6371 {
6372 p->primitive=primitive_info->primitive;
6373 p--;
6374 }
6375 return(MagickTrue);
6376}
6377
6378static MagickBooleanType TraceBezier(MVGInfo *mvg_info,
6379 const size_t number_coordinates)
6380{
6381 double
6382 alpha,
6383 *coefficients,
6384 weight;
6385
6386 PointInfo
6387 end,
6388 point,
6389 *points;
6390
6391 PrimitiveInfo
6392 *primitive_info;
6393
6394 PrimitiveInfo
6395 *p;
6396
6397 ssize_t
6398 i,
6399 j;
6400
6401 size_t
6402 control_points,
6403 quantum;
6404
6405 /*
6406 Allocate coefficients.
6407 */
6408 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6409 quantum=number_coordinates;
6410 for (i=0; i < (ssize_t) number_coordinates; i++)
6411 {
6412 for (j=i+1; j < (ssize_t) number_coordinates; j++)
6413 {
6414 alpha=fabs(primitive_info[j].point.x-primitive_info[i].point.x);
6415 if (alpha > (double) GetMaxMemoryRequest())
6416 {
6417 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6418 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6419 return(MagickFalse);
6420 }
6421 if (alpha > (double) quantum)
6422 quantum=(size_t) alpha;
6423 alpha=fabs(primitive_info[j].point.y-primitive_info[i].point.y);
6424 if (alpha > (double) quantum)
6425 quantum=(size_t) alpha;
6426 }
6427 }
6428 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6429 quantum=MagickMin(quantum/number_coordinates,BezierQuantum);
6430 if (quantum > (double) GetMaxMemoryRequest())
6431 {
6432 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6433 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6434 return(MagickFalse);
6435 }
6436 coefficients=(double *) AcquireQuantumMemory(number_coordinates,
6437 sizeof(*coefficients));
6438 points=(PointInfo *) AcquireQuantumMemory(quantum,number_coordinates*
6439 sizeof(*points));
6440 if ((coefficients == (double *) NULL) || (points == (PointInfo *) NULL))
6441 {
6442 if (points != (PointInfo *) NULL)
6443 points=(PointInfo *) RelinquishMagickMemory(points);
6444 if (coefficients != (double *) NULL)
6445 coefficients=(double *) RelinquishMagickMemory(coefficients);
6446 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6447 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6448 return(MagickFalse);
6449 }
6450 control_points=quantum*number_coordinates;
6451 if (CheckPrimitiveExtent(mvg_info,(double) control_points+1) == MagickFalse)
6452 {
6453 points=(PointInfo *) RelinquishMagickMemory(points);
6454 coefficients=(double *) RelinquishMagickMemory(coefficients);
6455 return(MagickFalse);
6456 }
6457 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6458 /*
6459 Compute bezier points.
6460 */
6461 end=primitive_info[number_coordinates-1].point;
6462 for (i=0; i < (ssize_t) number_coordinates; i++)
6463 coefficients[i]=Permutate((ssize_t) number_coordinates-1,i);
6464 weight=0.0;
6465 for (i=0; i < (ssize_t) control_points; i++)
6466 {
6467 p=primitive_info;
6468 point.x=0.0;
6469 point.y=0.0;
6470 alpha=pow((double) (1.0-weight),(double) number_coordinates-1.0);
6471 for (j=0; j < (ssize_t) number_coordinates; j++)
6472 {
6473 point.x+=alpha*coefficients[j]*p->point.x;
6474 point.y+=alpha*coefficients[j]*p->point.y;
6475 alpha*=weight/(1.0-weight);
6476 p++;
6477 }
6478 points[i]=point;
6479 weight+=1.0/control_points;
6480 }
6481 /*
6482 Bezier curves are just short segmented polys.
6483 */
6484 p=primitive_info;
6485 for (i=0; i < (ssize_t) control_points; i++)
6486 {
6487 if (TracePoint(p,points[i]) == MagickFalse)
6488 {
6489 points=(PointInfo *) RelinquishMagickMemory(points);
6490 coefficients=(double *) RelinquishMagickMemory(coefficients);
6491 return(MagickFalse);
6492 }
6493 p+=(ptrdiff_t) p->coordinates;
6494 }
6495 if (TracePoint(p,end) == MagickFalse)
6496 {
6497 points=(PointInfo *) RelinquishMagickMemory(points);
6498 coefficients=(double *) RelinquishMagickMemory(coefficients);
6499 return(MagickFalse);
6500 }
6501 p+=(ptrdiff_t) p->coordinates;
6502 primitive_info->coordinates=(size_t) (p-primitive_info);
6503 primitive_info->closed_subpath=MagickFalse;
6504 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6505 {
6506 p->primitive=primitive_info->primitive;
6507 p--;
6508 }
6509 points=(PointInfo *) RelinquishMagickMemory(points);
6510 coefficients=(double *) RelinquishMagickMemory(coefficients);
6511 return(MagickTrue);
6512}
6513
6514static MagickBooleanType TraceCircle(MVGInfo *mvg_info,const PointInfo start,
6515 const PointInfo end)
6516{
6517 double
6518 alpha,
6519 beta,
6520 radius;
6521
6522 PointInfo
6523 offset,
6524 degrees;
6525
6526 alpha=end.x-start.x;
6527 beta=end.y-start.y;
6528 radius=hypot((double) alpha,(double) beta);
6529 offset.x=(double) radius;
6530 offset.y=(double) radius;
6531 degrees.x=0.0;
6532 degrees.y=360.0;
6533 return(TraceEllipse(mvg_info,start,offset,degrees));
6534}
6535
6536static MagickBooleanType TraceEllipse(MVGInfo *mvg_info,const PointInfo center,
6537 const PointInfo radii,const PointInfo arc)
6538{
6539 double
6540 coordinates,
6541 delta,
6542 step,
6543 x,
6544 y;
6545
6546 PointInfo
6547 angle,
6548 point;
6549
6550 PrimitiveInfo
6551 *primitive_info;
6552
6553 PrimitiveInfo
6554 *p;
6555
6556 ssize_t
6557 i;
6558
6559 /*
6560 Ellipses are just short segmented polys.
6561 */
6562 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6563 primitive_info->coordinates=0;
6564 if ((fabs(radii.x) < MagickEpsilon) || (fabs(radii.y) < MagickEpsilon))
6565 return(MagickTrue);
6566 delta=MagickSafeReciprocal(MagickMax(radii.x,radii.y));
6567 step=MagickPI/(MagickPI*MagickSafeReciprocal(delta))/8.0;
6568 angle.x=DegreesToRadians(arc.x);
6569 y=arc.y;
6570 while (y < arc.x)
6571 y+=360.0;
6572 angle.y=DegreesToRadians(y);
6573 coordinates=ceil((angle.y-angle.x)/step+1.0);
6574 if (CheckPrimitiveExtent(mvg_info,coordinates+1) == MagickFalse)
6575 return(MagickFalse);
6576 i=0;
6577 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6578 for (p=primitive_info; angle.x < angle.y; angle.x+=step)
6579 {
6580 point.x=cos(fmod(angle.x,DegreesToRadians(360.0)))*radii.x+center.x;
6581 point.y=sin(fmod(angle.x,DegreesToRadians(360.0)))*radii.y+center.y;
6582 if (i++ >= (ssize_t) coordinates)
6583 break;
6584 if (TracePoint(p,point) == MagickFalse)
6585 return(MagickFalse);
6586 p+=(ptrdiff_t) p->coordinates;
6587 }
6588 point.x=cos(fmod(angle.y,DegreesToRadians(360.0)))*radii.x+center.x;
6589 point.y=sin(fmod(angle.y,DegreesToRadians(360.0)))*radii.y+center.y;
6590 if (TracePoint(p,point) == MagickFalse)
6591 return(MagickFalse);
6592 p+=(ptrdiff_t) p->coordinates;
6593 primitive_info->coordinates=(size_t) (p-primitive_info);
6594 primitive_info->closed_subpath=MagickFalse;
6595 x=fabs(primitive_info[0].point.x-
6596 primitive_info[primitive_info->coordinates-1].point.x);
6597 y=fabs(primitive_info[0].point.y-
6598 primitive_info[primitive_info->coordinates-1].point.y);
6599 if ((x < MagickEpsilon) && (y < MagickEpsilon))
6600 primitive_info->closed_subpath=MagickTrue;
6601 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6602 {
6603 p->primitive=primitive_info->primitive;
6604 p--;
6605 }
6606 return(MagickTrue);
6607}
6608
6609static MagickBooleanType TraceLine(PrimitiveInfo *primitive_info,
6610 const PointInfo start,const PointInfo end)
6611{
6612 if (TracePoint(primitive_info,start) == MagickFalse)
6613 return(MagickFalse);
6614 if (TracePoint(primitive_info+1,end) == MagickFalse)
6615 return(MagickFalse);
6616 (primitive_info+1)->primitive=primitive_info->primitive;
6617 primitive_info->coordinates=2;
6618 primitive_info->closed_subpath=MagickFalse;
6619 return(MagickTrue);
6620}
6621
6622static ssize_t TracePath(MVGInfo *mvg_info,const char *path,
6623 ExceptionInfo *exception)
6624{
6625 char
6626 *next_token,
6627 token[MagickPathExtent] = "";
6628
6629 const char
6630 *p;
6631
6632 double
6633 x,
6634 y;
6635
6636 int
6637 attribute,
6638 last_attribute;
6639
6640 MagickBooleanType
6641 status;
6642
6643 PointInfo
6644 end = {0.0, 0.0},
6645 points[4] = { {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0} },
6646 point = {0.0, 0.0},
6647 start = {0.0, 0.0};
6648
6649 PrimitiveInfo
6650 *primitive_info;
6651
6652 PrimitiveType
6653 primitive_type;
6654
6655 PrimitiveInfo
6656 *q;
6657
6658 ssize_t
6659 i;
6660
6661 size_t
6662 number_coordinates,
6663 z_count;
6664
6665 ssize_t
6666 subpath_offset;
6667
6668 subpath_offset=mvg_info->offset;
6669 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6670 status=MagickTrue;
6671 attribute=0;
6672 number_coordinates=0;
6673 z_count=0;
6674 primitive_type=primitive_info->primitive;
6675 q=primitive_info;
6676 for (p=path; *p != '\0'; )
6677 {
6678 if (status == MagickFalse)
6679 break;
6680 while (isspace((int) ((unsigned char) *p)) != 0)
6681 p++;
6682 if (*p == '\0')
6683 break;
6684 last_attribute=attribute;
6685 attribute=(int) (*p++);
6686 switch (attribute)
6687 {
6688 case 'a':
6689 case 'A':
6690 {
6691 double
6692 angle = 0.0;
6693
6694 MagickBooleanType
6695 large_arc = MagickFalse,
6696 sweep = MagickFalse;
6697
6698 PointInfo
6699 arc = {0.0, 0.0};
6700
6701 /*
6702 Elliptical arc.
6703 */
6704 do
6705 {
6706 (void) GetNextToken(p,&p,MagickPathExtent,token);
6707 if (*token == ',')
6708 (void) GetNextToken(p,&p,MagickPathExtent,token);
6709 arc.x=GetDrawValue(token,&next_token);
6710 if (token == next_token)
6711 ThrowPointExpectedException(token,exception);
6712 (void) GetNextToken(p,&p,MagickPathExtent,token);
6713 if (*token == ',')
6714 (void) GetNextToken(p,&p,MagickPathExtent,token);
6715 arc.y=GetDrawValue(token,&next_token);
6716 if (token == next_token)
6717 ThrowPointExpectedException(token,exception);
6718 (void) GetNextToken(p,&p,MagickPathExtent,token);
6719 if (*token == ',')
6720 (void) GetNextToken(p,&p,MagickPathExtent,token);
6721 angle=GetDrawValue(token,&next_token);
6722 if (token == next_token)
6723 ThrowPointExpectedException(token,exception);
6724 (void) GetNextToken(p,&p,MagickPathExtent,token);
6725 if (*token == ',')
6726 (void) GetNextToken(p,&p,MagickPathExtent,token);
6727 large_arc=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6728 (void) GetNextToken(p,&p,MagickPathExtent,token);
6729 if (*token == ',')
6730 (void) GetNextToken(p,&p,MagickPathExtent,token);
6731 sweep=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6732 if (*token == ',')
6733 (void) GetNextToken(p,&p,MagickPathExtent,token);
6734 (void) GetNextToken(p,&p,MagickPathExtent,token);
6735 if (*token == ',')
6736 (void) GetNextToken(p,&p,MagickPathExtent,token);
6737 x=GetDrawValue(token,&next_token);
6738 if (token == next_token)
6739 ThrowPointExpectedException(token,exception);
6740 (void) GetNextToken(p,&p,MagickPathExtent,token);
6741 if (*token == ',')
6742 (void) GetNextToken(p,&p,MagickPathExtent,token);
6743 y=GetDrawValue(token,&next_token);
6744 if (token == next_token)
6745 ThrowPointExpectedException(token,exception);
6746 end.x=(double) (attribute == (int) 'A' ? x : point.x+x);
6747 end.y=(double) (attribute == (int) 'A' ? y : point.y+y);
6748 if (TraceArcPath(mvg_info,point,end,arc,angle,large_arc,sweep) == MagickFalse)
6749 return(-1);
6750 q=(*mvg_info->primitive_info)+mvg_info->offset;
6751 mvg_info->offset+=(ssize_t) q->coordinates;
6752 q+=(ptrdiff_t) q->coordinates;
6753 point=end;
6754 while (isspace((int) ((unsigned char) *p)) != 0)
6755 p++;
6756 if (*p == ',')
6757 p++;
6758 } while (IsPoint(p) != MagickFalse);
6759 break;
6760 }
6761 case 'c':
6762 case 'C':
6763 {
6764 /*
6765 Cubic Bézier curve.
6766 */
6767 do
6768 {
6769 points[0]=point;
6770 for (i=1; i < 4; i++)
6771 {
6772 (void) GetNextToken(p,&p,MagickPathExtent,token);
6773 if (*token == ',')
6774 (void) GetNextToken(p,&p,MagickPathExtent,token);
6775 x=GetDrawValue(token,&next_token);
6776 if (token == next_token)
6777 ThrowPointExpectedException(token,exception);
6778 (void) GetNextToken(p,&p,MagickPathExtent,token);
6779 if (*token == ',')
6780 (void) GetNextToken(p,&p,MagickPathExtent,token);
6781 y=GetDrawValue(token,&next_token);
6782 if (token == next_token)
6783 ThrowPointExpectedException(token,exception);
6784 end.x=(double) (attribute == (int) 'C' ? x : point.x+x);
6785 end.y=(double) (attribute == (int) 'C' ? y : point.y+y);
6786 points[i]=end;
6787 }
6788 for (i=0; i < 4; i++)
6789 (q+i)->point=points[i];
6790 if (TraceBezier(mvg_info,4) == MagickFalse)
6791 return(-1);
6792 q=(*mvg_info->primitive_info)+mvg_info->offset;
6793 mvg_info->offset+=(ssize_t) q->coordinates;
6794 q+=(ptrdiff_t) q->coordinates;
6795 point=end;
6796 while (isspace((int) ((unsigned char) *p)) != 0)
6797 p++;
6798 if (*p == ',')
6799 p++;
6800 } while (IsPoint(p) != MagickFalse);
6801 break;
6802 }
6803 case 'H':
6804 case 'h':
6805 {
6806 do
6807 {
6808 (void) GetNextToken(p,&p,MagickPathExtent,token);
6809 if (*token == ',')
6810 (void) GetNextToken(p,&p,MagickPathExtent,token);
6811 x=GetDrawValue(token,&next_token);
6812 if (token == next_token)
6813 ThrowPointExpectedException(token,exception);
6814 point.x=(double) (attribute == (int) 'H' ? x: point.x+x);
6815 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6816 return(-1);
6817 q=(*mvg_info->primitive_info)+mvg_info->offset;
6818 if (TracePoint(q,point) == MagickFalse)
6819 return(-1);
6820 mvg_info->offset+=(ssize_t) q->coordinates;
6821 q+=(ptrdiff_t) q->coordinates;
6822 while (isspace((int) ((unsigned char) *p)) != 0)
6823 p++;
6824 if (*p == ',')
6825 p++;
6826 } while (IsPoint(p) != MagickFalse);
6827 break;
6828 }
6829 case 'l':
6830 case 'L':
6831 {
6832 /*
6833 Line to.
6834 */
6835 do
6836 {
6837 (void) GetNextToken(p,&p,MagickPathExtent,token);
6838 if (*token == ',')
6839 (void) GetNextToken(p,&p,MagickPathExtent,token);
6840 x=GetDrawValue(token,&next_token);
6841 if (token == next_token)
6842 ThrowPointExpectedException(token,exception);
6843 (void) GetNextToken(p,&p,MagickPathExtent,token);
6844 if (*token == ',')
6845 (void) GetNextToken(p,&p,MagickPathExtent,token);
6846 y=GetDrawValue(token,&next_token);
6847 if (token == next_token)
6848 ThrowPointExpectedException(token,exception);
6849 point.x=(double) (attribute == (int) 'L' ? x : point.x+x);
6850 point.y=(double) (attribute == (int) 'L' ? y : point.y+y);
6851 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6852 return(-1);
6853 q=(*mvg_info->primitive_info)+mvg_info->offset;
6854 if (TracePoint(q,point) == MagickFalse)
6855 return(-1);
6856 mvg_info->offset+=(ssize_t) q->coordinates;
6857 q+=(ptrdiff_t) q->coordinates;
6858 while (isspace((int) ((unsigned char) *p)) != 0)
6859 p++;
6860 if (*p == ',')
6861 p++;
6862 } while (IsPoint(p) != MagickFalse);
6863 break;
6864 }
6865 case 'M':
6866 case 'm':
6867 {
6868 /*
6869 Move to.
6870 */
6871 if (mvg_info->offset != subpath_offset)
6872 {
6873 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6874 primitive_info->coordinates=(size_t) (q-primitive_info);
6875 number_coordinates+=primitive_info->coordinates;
6876 primitive_info=q;
6877 subpath_offset=mvg_info->offset;
6878 }
6879 i=0;
6880 do
6881 {
6882 (void) GetNextToken(p,&p,MagickPathExtent,token);
6883 if (*token == ',')
6884 (void) GetNextToken(p,&p,MagickPathExtent,token);
6885 x=GetDrawValue(token,&next_token);
6886 if (token == next_token)
6887 ThrowPointExpectedException(token,exception);
6888 (void) GetNextToken(p,&p,MagickPathExtent,token);
6889 if (*token == ',')
6890 (void) GetNextToken(p,&p,MagickPathExtent,token);
6891 y=GetDrawValue(token,&next_token);
6892 if (token == next_token)
6893 ThrowPointExpectedException(token,exception);
6894 point.x=(double) (attribute == (int) 'M' ? x : point.x+x);
6895 point.y=(double) (attribute == (int) 'M' ? y : point.y+y);
6896 if (i == 0)
6897 start=point;
6898 i++;
6899 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6900 return(-1);
6901 q=(*mvg_info->primitive_info)+mvg_info->offset;
6902 if (TracePoint(q,point) == MagickFalse)
6903 return(-1);
6904 mvg_info->offset+=(ssize_t) q->coordinates;
6905 q+=(ptrdiff_t) q->coordinates;
6906 while (isspace((int) ((unsigned char) *p)) != 0)
6907 p++;
6908 if (*p == ',')
6909 p++;
6910 } while (IsPoint(p) != MagickFalse);
6911 break;
6912 }
6913 case 'q':
6914 case 'Q':
6915 {
6916 /*
6917 Quadratic Bézier curve.
6918 */
6919 do
6920 {
6921 points[0]=point;
6922 for (i=1; i < 3; i++)
6923 {
6924 (void) GetNextToken(p,&p,MagickPathExtent,token);
6925 if (*token == ',')
6926 (void) GetNextToken(p,&p,MagickPathExtent,token);
6927 x=GetDrawValue(token,&next_token);
6928 if (token == next_token)
6929 ThrowPointExpectedException(token,exception);
6930 (void) GetNextToken(p,&p,MagickPathExtent,token);
6931 if (*token == ',')
6932 (void) GetNextToken(p,&p,MagickPathExtent,token);
6933 y=GetDrawValue(token,&next_token);
6934 if (token == next_token)
6935 ThrowPointExpectedException(token,exception);
6936 if (*p == ',')
6937 p++;
6938 end.x=(double) (attribute == (int) 'Q' ? x : point.x+x);
6939 end.y=(double) (attribute == (int) 'Q' ? y : point.y+y);
6940 points[i]=end;
6941 }
6942 for (i=0; i < 3; i++)
6943 (q+i)->point=points[i];
6944 if (TraceBezier(mvg_info,3) == MagickFalse)
6945 return(-1);
6946 q=(*mvg_info->primitive_info)+mvg_info->offset;
6947 mvg_info->offset+=(ssize_t) q->coordinates;
6948 q+=(ptrdiff_t) q->coordinates;
6949 point=end;
6950 while (isspace((int) ((unsigned char) *p)) != 0)
6951 p++;
6952 if (*p == ',')
6953 p++;
6954 } while (IsPoint(p) != MagickFalse);
6955 break;
6956 }
6957 case 's':
6958 case 'S':
6959 {
6960 /*
6961 Cubic Bézier curve.
6962 */
6963 do
6964 {
6965 points[0]=points[3];
6966 points[1].x=2.0*points[3].x-points[2].x;
6967 points[1].y=2.0*points[3].y-points[2].y;
6968 for (i=2; i < 4; i++)
6969 {
6970 (void) GetNextToken(p,&p,MagickPathExtent,token);
6971 if (*token == ',')
6972 (void) GetNextToken(p,&p,MagickPathExtent,token);
6973 x=GetDrawValue(token,&next_token);
6974 if (token == next_token)
6975 ThrowPointExpectedException(token,exception);
6976 (void) GetNextToken(p,&p,MagickPathExtent,token);
6977 if (*token == ',')
6978 (void) GetNextToken(p,&p,MagickPathExtent,token);
6979 y=GetDrawValue(token,&next_token);
6980 if (token == next_token)
6981 ThrowPointExpectedException(token,exception);
6982 if (*p == ',')
6983 p++;
6984 end.x=(double) (attribute == (int) 'S' ? x : point.x+x);
6985 end.y=(double) (attribute == (int) 'S' ? y : point.y+y);
6986 points[i]=end;
6987 }
6988 if (strchr("CcSs",last_attribute) == (char *) NULL)
6989 {
6990 points[0]=point;
6991 points[1]=point;
6992 }
6993 for (i=0; i < 4; i++)
6994 (q+i)->point=points[i];
6995 if (TraceBezier(mvg_info,4) == MagickFalse)
6996 return(-1);
6997 q=(*mvg_info->primitive_info)+mvg_info->offset;
6998 mvg_info->offset+=(ssize_t) q->coordinates;
6999 q+=(ptrdiff_t) q->coordinates;
7000 point=end;
7001 last_attribute=attribute;
7002 while (isspace((int) ((unsigned char) *p)) != 0)
7003 p++;
7004 if (*p == ',')
7005 p++;
7006 } while (IsPoint(p) != MagickFalse);
7007 break;
7008 }
7009 case 't':
7010 case 'T':
7011 {
7012 /*
7013 Quadratic Bézier curve.
7014 */
7015 do
7016 {
7017 points[0]=points[2];
7018 points[1].x=2.0*points[2].x-points[1].x;
7019 points[1].y=2.0*points[2].y-points[1].y;
7020 for (i=2; i < 3; i++)
7021 {
7022 (void) GetNextToken(p,&p,MagickPathExtent,token);
7023 if (*token == ',')
7024 (void) GetNextToken(p,&p,MagickPathExtent,token);
7025 x=GetDrawValue(token,&next_token);
7026 if (token == next_token)
7027 ThrowPointExpectedException(token,exception);
7028 (void) GetNextToken(p,&p,MagickPathExtent,token);
7029 if (*token == ',')
7030 (void) GetNextToken(p,&p,MagickPathExtent,token);
7031 y=GetDrawValue(token,&next_token);
7032 if (token == next_token)
7033 ThrowPointExpectedException(token,exception);
7034 end.x=(double) (attribute == (int) 'T' ? x : point.x+x);
7035 end.y=(double) (attribute == (int) 'T' ? y : point.y+y);
7036 points[i]=end;
7037 }
7038 if (status == MagickFalse)
7039 break;
7040 if (strchr("QqTt",last_attribute) == (char *) NULL)
7041 {
7042 points[0]=point;
7043 points[1]=point;
7044 }
7045 for (i=0; i < 3; i++)
7046 (q+i)->point=points[i];
7047 if (TraceBezier(mvg_info,3) == MagickFalse)
7048 return(-1);
7049 q=(*mvg_info->primitive_info)+mvg_info->offset;
7050 mvg_info->offset+=(ssize_t) q->coordinates;
7051 q+=(ptrdiff_t) q->coordinates;
7052 point=end;
7053 last_attribute=attribute;
7054 while (isspace((int) ((unsigned char) *p)) != 0)
7055 p++;
7056 if (*p == ',')
7057 p++;
7058 } while (IsPoint(p) != MagickFalse);
7059 break;
7060 }
7061 case 'v':
7062 case 'V':
7063 {
7064 /*
7065 Line to.
7066 */
7067 do
7068 {
7069 (void) GetNextToken(p,&p,MagickPathExtent,token);
7070 if (*token == ',')
7071 (void) GetNextToken(p,&p,MagickPathExtent,token);
7072 y=GetDrawValue(token,&next_token);
7073 if (token == next_token)
7074 ThrowPointExpectedException(token,exception);
7075 point.y=(double) (attribute == (int) 'V' ? y : point.y+y);
7076 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7077 return(-1);
7078 q=(*mvg_info->primitive_info)+mvg_info->offset;
7079 if (TracePoint(q,point) == MagickFalse)
7080 return(-1);
7081 mvg_info->offset+=(ssize_t) q->coordinates;
7082 q+=(ptrdiff_t) q->coordinates;
7083 while (isspace((int) ((unsigned char) *p)) != 0)
7084 p++;
7085 if (*p == ',')
7086 p++;
7087 } while (IsPoint(p) != MagickFalse);
7088 break;
7089 }
7090 case 'z':
7091 case 'Z':
7092 {
7093 /*
7094 Close path.
7095 */
7096 point=start;
7097 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7098 return(-1);
7099 q=(*mvg_info->primitive_info)+mvg_info->offset;
7100 if (TracePoint(q,point) == MagickFalse)
7101 return(-1);
7102 mvg_info->offset+=(ssize_t) q->coordinates;
7103 q+=(ptrdiff_t) q->coordinates;
7104 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
7105 primitive_info->coordinates=(size_t) (q-primitive_info);
7106 primitive_info->closed_subpath=MagickTrue;
7107 number_coordinates+=primitive_info->coordinates;
7108 primitive_info=q;
7109 subpath_offset=mvg_info->offset;
7110 z_count++;
7111 break;
7112 }
7113 default:
7114 {
7115 ThrowPointExpectedException(token,exception);
7116 break;
7117 }
7118 }
7119 }
7120 if (status == MagickFalse)
7121 return(-1);
7122 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
7123 primitive_info->coordinates=(size_t) (q-primitive_info);
7124 number_coordinates+=primitive_info->coordinates;
7125 for (i=0; i < (ssize_t) number_coordinates; i++)
7126 {
7127 q--;
7128 q->primitive=primitive_type;
7129 if (z_count > 1)
7130 q->method=FillToBorderMethod;
7131 }
7132 q=primitive_info;
7133 return((ssize_t) number_coordinates);
7134}
7135
7136static MagickBooleanType TraceRectangle(PrimitiveInfo *primitive_info,
7137 const PointInfo start,const PointInfo end)
7138{
7139 PointInfo
7140 point;
7141
7142 PrimitiveInfo
7143 *p;
7144
7145 ssize_t
7146 i;
7147
7148 p=primitive_info;
7149 if (TracePoint(p,start) == MagickFalse)
7150 return(MagickFalse);
7151 p+=(ptrdiff_t) p->coordinates;
7152 point.x=start.x;
7153 point.y=end.y;
7154 if (TracePoint(p,point) == MagickFalse)
7155 return(MagickFalse);
7156 p+=(ptrdiff_t) p->coordinates;
7157 if (TracePoint(p,end) == MagickFalse)
7158 return(MagickFalse);
7159 p+=(ptrdiff_t) p->coordinates;
7160 point.x=end.x;
7161 point.y=start.y;
7162 if (TracePoint(p,point) == MagickFalse)
7163 return(MagickFalse);
7164 p+=(ptrdiff_t) p->coordinates;
7165 if (TracePoint(p,start) == MagickFalse)
7166 return(MagickFalse);
7167 p+=(ptrdiff_t) p->coordinates;
7168 primitive_info->coordinates=(size_t) (p-primitive_info);
7169 primitive_info->closed_subpath=MagickTrue;
7170 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7171 {
7172 p->primitive=primitive_info->primitive;
7173 p--;
7174 }
7175 return(MagickTrue);
7176}
7177
7178static MagickBooleanType TraceRoundRectangle(MVGInfo *mvg_info,
7179 const PointInfo start,const PointInfo end,PointInfo arc)
7180{
7181 PointInfo
7182 degrees,
7183 point,
7184 segment;
7185
7186 PrimitiveInfo
7187 *primitive_info;
7188
7189 PrimitiveInfo
7190 *p;
7191
7192 ssize_t
7193 i;
7194
7195 ssize_t
7196 offset;
7197
7198 offset=mvg_info->offset;
7199 segment.x=fabs(end.x-start.x);
7200 segment.y=fabs(end.y-start.y);
7201 if ((segment.x < MagickEpsilon) || (segment.y < MagickEpsilon))
7202 {
7203 (*mvg_info->primitive_info+mvg_info->offset)->coordinates=0;
7204 return(MagickTrue);
7205 }
7206 if (arc.x > (0.5*segment.x))
7207 arc.x=0.5*segment.x;
7208 if (arc.y > (0.5*segment.y))
7209 arc.y=0.5*segment.y;
7210 point.x=start.x+segment.x-arc.x;
7211 point.y=start.y+arc.y;
7212 degrees.x=270.0;
7213 degrees.y=360.0;
7214 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7215 return(MagickFalse);
7216 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7217 mvg_info->offset+=(ssize_t) p->coordinates;
7218 point.x=start.x+segment.x-arc.x;
7219 point.y=start.y+segment.y-arc.y;
7220 degrees.x=0.0;
7221 degrees.y=90.0;
7222 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7223 return(MagickFalse);
7224 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7225 mvg_info->offset+=(ssize_t) p->coordinates;
7226 point.x=start.x+arc.x;
7227 point.y=start.y+segment.y-arc.y;
7228 degrees.x=90.0;
7229 degrees.y=180.0;
7230 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7231 return(MagickFalse);
7232 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7233 mvg_info->offset+=(ssize_t) p->coordinates;
7234 point.x=start.x+arc.x;
7235 point.y=start.y+arc.y;
7236 degrees.x=180.0;
7237 degrees.y=270.0;
7238 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7239 return(MagickFalse);
7240 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7241 mvg_info->offset+=(ssize_t) p->coordinates;
7242 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7243 return(MagickFalse);
7244 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7245 if (TracePoint(p,(*mvg_info->primitive_info+offset)->point) == MagickFalse)
7246 return(MagickFalse);
7247 p+=(ptrdiff_t) p->coordinates;
7248 mvg_info->offset=offset;
7249 primitive_info=(*mvg_info->primitive_info)+offset;
7250 primitive_info->coordinates=(size_t) (p-primitive_info);
7251 primitive_info->closed_subpath=MagickTrue;
7252 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7253 {
7254 p->primitive=primitive_info->primitive;
7255 p--;
7256 }
7257 return(MagickTrue);
7258}
7259
7260static MagickBooleanType TraceSquareLinecap(PrimitiveInfo *primitive_info,
7261 const size_t number_vertices,const double offset)
7262{
7263 double
7264 distance;
7265
7266 double
7267 dx,
7268 dy;
7269
7270 ssize_t
7271 i;
7272
7273 ssize_t
7274 j;
7275
7276 dx=0.0;
7277 dy=0.0;
7278 for (i=1; i < (ssize_t) number_vertices; i++)
7279 {
7280 dx=primitive_info[0].point.x-primitive_info[i].point.x;
7281 dy=primitive_info[0].point.y-primitive_info[i].point.y;
7282 if ((fabs((double) dx) >= MagickEpsilon) ||
7283 (fabs((double) dy) >= MagickEpsilon))
7284 break;
7285 }
7286 if (i == (ssize_t) number_vertices)
7287 i=(ssize_t) number_vertices-1L;
7288 distance=hypot((double) dx,(double) dy);
7289 primitive_info[0].point.x=(double) (primitive_info[i].point.x+
7290 dx*(distance+offset)/distance);
7291 primitive_info[0].point.y=(double) (primitive_info[i].point.y+
7292 dy*(distance+offset)/distance);
7293 for (j=(ssize_t) number_vertices-2; j >= 0; j--)
7294 {
7295 dx=primitive_info[number_vertices-1].point.x-primitive_info[j].point.x;
7296 dy=primitive_info[number_vertices-1].point.y-primitive_info[j].point.y;
7297 if ((fabs((double) dx) >= MagickEpsilon) ||
7298 (fabs((double) dy) >= MagickEpsilon))
7299 break;
7300 }
7301 distance=hypot((double) dx,(double) dy);
7302 primitive_info[number_vertices-1].point.x=(double) (primitive_info[j].point.x+
7303 dx*(distance+offset)/distance);
7304 primitive_info[number_vertices-1].point.y=(double) (primitive_info[j].point.y+
7305 dy*(distance+offset)/distance);
7306 return(MagickTrue);
7307}
7308
7309static PrimitiveInfo *TraceStrokePolygon(const DrawInfo *draw_info,
7310 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
7311{
7312#define MaxStrokePad (6*BezierQuantum+360)
7313#define CheckPathExtent(pad_p,pad_q) \
7314{ \
7315 if ((pad_p) > MaxBezierCoordinates) \
7316 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7317 else \
7318 if ((p+(ptrdiff_t) (pad_p)) >= (ssize_t) extent_p) \
7319 { \
7320 if (~extent_p < (pad_p)) \
7321 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7322 else \
7323 { \
7324 extent_p+=(pad_p); \
7325 stroke_p=(PointInfo *) ResizeQuantumMemory(stroke_p,extent_p+ \
7326 MaxStrokePad,sizeof(*stroke_p)); \
7327 } \
7328 } \
7329 if ((pad_q) > MaxBezierCoordinates) \
7330 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7331 else \
7332 if ((q+(ptrdiff_t) (pad_q)) >= (ssize_t) extent_q) \
7333 { \
7334 if (~extent_q < (pad_q)) \
7335 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7336 else \
7337 { \
7338 extent_q+=(pad_q); \
7339 stroke_q=(PointInfo *) ResizeQuantumMemory(stroke_q,extent_q+ \
7340 MaxStrokePad,sizeof(*stroke_q)); \
7341 } \
7342 } \
7343 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL)) \
7344 { \
7345 if (stroke_p != (PointInfo *) NULL) \
7346 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7347 if (stroke_q != (PointInfo *) NULL) \
7348 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7349 polygon_primitive=(PrimitiveInfo *) \
7350 RelinquishMagickMemory(polygon_primitive); \
7351 (void) ThrowMagickException(exception,GetMagickModule(), \
7352 ResourceLimitError,"MemoryAllocationFailed","`%s'",""); \
7353 return((PrimitiveInfo *) NULL); \
7354 } \
7355}
7356
7357 typedef struct _StrokeSegment
7358 {
7359 double
7360 p,
7361 q;
7362 } StrokeSegment;
7363
7364 double
7365 delta_theta,
7366 dot_product,
7367 mid,
7368 miterlimit;
7369
7370 MagickBooleanType
7371 closed_path;
7372
7373 PointInfo
7374 box_p[5],
7375 box_q[5],
7376 center,
7377 offset,
7378 *stroke_p,
7379 *stroke_q;
7380
7381 PrimitiveInfo
7382 *polygon_primitive,
7383 *stroke_polygon;
7384
7385 ssize_t
7386 i;
7387
7388 size_t
7389 arc_segments,
7390 extent_p,
7391 extent_q,
7392 number_vertices;
7393
7394 ssize_t
7395 j,
7396 n,
7397 p,
7398 q;
7399
7400 StrokeSegment
7401 dx = {0.0, 0.0},
7402 dy = {0.0, 0.0},
7403 inverse_slope = {0.0, 0.0},
7404 slope = {0.0, 0.0},
7405 theta = {0.0, 0.0};
7406
7407 /*
7408 Allocate paths.
7409 */
7410 number_vertices=primitive_info->coordinates;
7411 polygon_primitive=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7412 number_vertices+2UL,sizeof(*polygon_primitive));
7413 if (polygon_primitive == (PrimitiveInfo *) NULL)
7414 {
7415 (void) ThrowMagickException(exception,GetMagickModule(),
7416 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7417 return((PrimitiveInfo *) NULL);
7418 }
7419 (void) memcpy(polygon_primitive,primitive_info,(size_t) number_vertices*
7420 sizeof(*polygon_primitive));
7421 offset.x=primitive_info[number_vertices-1].point.x-primitive_info[0].point.x;
7422 offset.y=primitive_info[number_vertices-1].point.y-primitive_info[0].point.y;
7423 closed_path=(fabs(offset.x) < MagickEpsilon) &&
7424 (fabs(offset.y) < MagickEpsilon) ? MagickTrue : MagickFalse;
7425 if ((draw_info->linejoin == RoundJoin) ||
7426 ((draw_info->linejoin == MiterJoin) && (closed_path != MagickFalse)))
7427 {
7428 polygon_primitive[number_vertices]=primitive_info[1];
7429 number_vertices++;
7430 }
7431 polygon_primitive[number_vertices].primitive=UndefinedPrimitive;
7432 /*
7433 Compute the slope for the first line segment, p.
7434 */
7435 closed_path=primitive_info[0].closed_subpath;
7436 dx.p=0.0;
7437 dy.p=0.0;
7438 for (n=1; n < (ssize_t) number_vertices; n++)
7439 {
7440 dx.p=polygon_primitive[n].point.x-polygon_primitive[0].point.x;
7441 dy.p=polygon_primitive[n].point.y-polygon_primitive[0].point.y;
7442 if ((fabs(dx.p) >= MagickEpsilon) || (fabs(dy.p) >= MagickEpsilon))
7443 break;
7444 }
7445 if (n == (ssize_t) number_vertices)
7446 {
7447 if ((draw_info->linecap != RoundCap) || (closed_path != MagickFalse))
7448 {
7449 /*
7450 Zero length subpath.
7451 */
7452 stroke_polygon=(PrimitiveInfo *) AcquireCriticalMemory(
7453 sizeof(*stroke_polygon));
7454 stroke_polygon[0]=polygon_primitive[0];
7455 stroke_polygon[0].coordinates=0;
7456 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7457 polygon_primitive);
7458 return(stroke_polygon);
7459 }
7460 n=(ssize_t) number_vertices-1L;
7461 }
7462 extent_p=2*number_vertices;
7463 extent_q=2*number_vertices;
7464 stroke_p=(PointInfo *) AcquireQuantumMemory((size_t) extent_p+MaxStrokePad,
7465 sizeof(*stroke_p));
7466 stroke_q=(PointInfo *) AcquireQuantumMemory((size_t) extent_q+MaxStrokePad,
7467 sizeof(*stroke_q));
7468 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL))
7469 {
7470 if (stroke_p != (PointInfo *) NULL)
7471 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7472 if (stroke_q != (PointInfo *) NULL)
7473 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7474 polygon_primitive=(PrimitiveInfo *)
7475 RelinquishMagickMemory(polygon_primitive);
7476 (void) ThrowMagickException(exception,GetMagickModule(),
7477 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7478 return((PrimitiveInfo *) NULL);
7479 }
7480 slope.p=0.0;
7481 inverse_slope.p=0.0;
7482 if (fabs(dx.p) < MagickEpsilon)
7483 {
7484 if (dx.p >= 0.0)
7485 slope.p=dy.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7486 else
7487 slope.p=dy.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7488 }
7489 else
7490 if (fabs(dy.p) < MagickEpsilon)
7491 {
7492 if (dy.p >= 0.0)
7493 inverse_slope.p=dx.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7494 else
7495 inverse_slope.p=dx.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7496 }
7497 else
7498 {
7499 slope.p=dy.p/dx.p;
7500 inverse_slope.p=(-1.0*MagickSafeReciprocal(slope.p));
7501 }
7502 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
7503 miterlimit=(double) (draw_info->miterlimit*draw_info->miterlimit*mid*mid);
7504 if ((draw_info->linecap == SquareCap) && (closed_path == MagickFalse))
7505 (void) TraceSquareLinecap(polygon_primitive,number_vertices,mid);
7506 offset.x=sqrt((double) (mid*mid/(inverse_slope.p*inverse_slope.p+1.0)));
7507 offset.y=(double) (offset.x*inverse_slope.p);
7508 if ((dy.p*offset.x-dx.p*offset.y) > 0.0)
7509 {
7510 box_p[0].x=polygon_primitive[0].point.x-offset.x;
7511 box_p[0].y=polygon_primitive[0].point.y-offset.x*inverse_slope.p;
7512 box_p[1].x=polygon_primitive[n].point.x-offset.x;
7513 box_p[1].y=polygon_primitive[n].point.y-offset.x*inverse_slope.p;
7514 box_q[0].x=polygon_primitive[0].point.x+offset.x;
7515 box_q[0].y=polygon_primitive[0].point.y+offset.x*inverse_slope.p;
7516 box_q[1].x=polygon_primitive[n].point.x+offset.x;
7517 box_q[1].y=polygon_primitive[n].point.y+offset.x*inverse_slope.p;
7518 }
7519 else
7520 {
7521 box_p[0].x=polygon_primitive[0].point.x+offset.x;
7522 box_p[0].y=polygon_primitive[0].point.y+offset.y;
7523 box_p[1].x=polygon_primitive[n].point.x+offset.x;
7524 box_p[1].y=polygon_primitive[n].point.y+offset.y;
7525 box_q[0].x=polygon_primitive[0].point.x-offset.x;
7526 box_q[0].y=polygon_primitive[0].point.y-offset.y;
7527 box_q[1].x=polygon_primitive[n].point.x-offset.x;
7528 box_q[1].y=polygon_primitive[n].point.y-offset.y;
7529 }
7530 /*
7531 Create strokes for the line join attribute: bevel, miter, round.
7532 */
7533 p=0;
7534 q=0;
7535 stroke_q[p++]=box_q[0];
7536 stroke_p[q++]=box_p[0];
7537 for (i=(ssize_t) n+1; i < (ssize_t) number_vertices; i++)
7538 {
7539 /*
7540 Compute the slope for this line segment, q.
7541 */
7542 dx.q=polygon_primitive[i].point.x-polygon_primitive[n].point.x;
7543 dy.q=polygon_primitive[i].point.y-polygon_primitive[n].point.y;
7544 dot_product=dx.q*dx.q+dy.q*dy.q;
7545 if (dot_product < 0.25)
7546 continue;
7547 slope.q=0.0;
7548 inverse_slope.q=0.0;
7549 if (fabs(dx.q) < MagickEpsilon)
7550 {
7551 if (dx.q >= 0.0)
7552 slope.q=dy.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7553 else
7554 slope.q=dy.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7555 }
7556 else
7557 if (fabs(dy.q) < MagickEpsilon)
7558 {
7559 if (dy.q >= 0.0)
7560 inverse_slope.q=dx.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7561 else
7562 inverse_slope.q=dx.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7563 }
7564 else
7565 {
7566 slope.q=dy.q/dx.q;
7567 inverse_slope.q=(-1.0*MagickSafeReciprocal(slope.q));
7568 }
7569 offset.x=sqrt((double) (mid*mid/(inverse_slope.q*inverse_slope.q+1.0)));
7570 offset.y=(double) (offset.x*inverse_slope.q);
7571 dot_product=dy.q*offset.x-dx.q*offset.y;
7572 if (dot_product > 0.0)
7573 {
7574 box_p[2].x=polygon_primitive[n].point.x-offset.x;
7575 box_p[2].y=polygon_primitive[n].point.y-offset.y;
7576 box_p[3].x=polygon_primitive[i].point.x-offset.x;
7577 box_p[3].y=polygon_primitive[i].point.y-offset.y;
7578 box_q[2].x=polygon_primitive[n].point.x+offset.x;
7579 box_q[2].y=polygon_primitive[n].point.y+offset.y;
7580 box_q[3].x=polygon_primitive[i].point.x+offset.x;
7581 box_q[3].y=polygon_primitive[i].point.y+offset.y;
7582 }
7583 else
7584 {
7585 box_p[2].x=polygon_primitive[n].point.x+offset.x;
7586 box_p[2].y=polygon_primitive[n].point.y+offset.y;
7587 box_p[3].x=polygon_primitive[i].point.x+offset.x;
7588 box_p[3].y=polygon_primitive[i].point.y+offset.y;
7589 box_q[2].x=polygon_primitive[n].point.x-offset.x;
7590 box_q[2].y=polygon_primitive[n].point.y-offset.y;
7591 box_q[3].x=polygon_primitive[i].point.x-offset.x;
7592 box_q[3].y=polygon_primitive[i].point.y-offset.y;
7593 }
7594 if (fabs((double) (slope.p-slope.q)) < MagickEpsilon)
7595 {
7596 box_p[4]=box_p[1];
7597 box_q[4]=box_q[1];
7598 }
7599 else
7600 {
7601 box_p[4].x=(double) ((slope.p*box_p[0].x-box_p[0].y-slope.q*box_p[3].x+
7602 box_p[3].y)/(slope.p-slope.q));
7603 box_p[4].y=(double) (slope.p*(box_p[4].x-box_p[0].x)+box_p[0].y);
7604 box_q[4].x=(double) ((slope.p*box_q[0].x-box_q[0].y-slope.q*box_q[3].x+
7605 box_q[3].y)/(slope.p-slope.q));
7606 box_q[4].y=(double) (slope.p*(box_q[4].x-box_q[0].x)+box_q[0].y);
7607 }
7608 DisableMSCWarning(4127)
7609 CheckPathExtent(MaxStrokePad,MaxStrokePad);
7610 RestoreMSCWarning
7611 dot_product=dx.q*dy.p-dx.p*dy.q;
7612 if (dot_product <= 0.0)
7613 switch (draw_info->linejoin)
7614 {
7615 case BevelJoin:
7616 {
7617 stroke_q[q++]=box_q[1];
7618 stroke_q[q++]=box_q[2];
7619 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7620 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7621 if (dot_product <= miterlimit)
7622 stroke_p[p++]=box_p[4];
7623 else
7624 {
7625 stroke_p[p++]=box_p[1];
7626 stroke_p[p++]=box_p[2];
7627 }
7628 break;
7629 }
7630 case MiterJoin:
7631 {
7632 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7633 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7634 if (dot_product <= miterlimit)
7635 {
7636 stroke_q[q++]=box_q[4];
7637 stroke_p[p++]=box_p[4];
7638 }
7639 else
7640 {
7641 stroke_q[q++]=box_q[1];
7642 stroke_q[q++]=box_q[2];
7643 stroke_p[p++]=box_p[1];
7644 stroke_p[p++]=box_p[2];
7645 }
7646 break;
7647 }
7648 case RoundJoin:
7649 {
7650 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7651 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7652 if (dot_product <= miterlimit)
7653 stroke_p[p++]=box_p[4];
7654 else
7655 {
7656 stroke_p[p++]=box_p[1];
7657 stroke_p[p++]=box_p[2];
7658 }
7659 center=polygon_primitive[n].point;
7660 theta.p=atan2(box_q[1].y-center.y,box_q[1].x-center.x);
7661 theta.q=atan2(box_q[2].y-center.y,box_q[2].x-center.x);
7662 if (theta.q < theta.p)
7663 theta.q+=2.0*MagickPI;
7664 arc_segments=(size_t) CastDoubleToSsizeT(ceil((double) ((theta.q-
7665 theta.p)/(2.0*sqrt(MagickSafeReciprocal(mid))))));
7666 DisableMSCWarning(4127)
7667 CheckPathExtent(MaxStrokePad,arc_segments+MaxStrokePad);
7668 RestoreMSCWarning
7669 stroke_q[q].x=box_q[1].x;
7670 stroke_q[q].y=box_q[1].y;
7671 q++;
7672 for (j=1; j < (ssize_t) arc_segments; j++)
7673 {
7674 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7675 stroke_q[q].x=(double) (center.x+mid*cos(fmod((double)
7676 (theta.p+delta_theta),DegreesToRadians(360.0))));
7677 stroke_q[q].y=(double) (center.y+mid*sin(fmod((double)
7678 (theta.p+delta_theta),DegreesToRadians(360.0))));
7679 q++;
7680 }
7681 stroke_q[q++]=box_q[2];
7682 break;
7683 }
7684 default:
7685 break;
7686 }
7687 else
7688 switch (draw_info->linejoin)
7689 {
7690 case BevelJoin:
7691 {
7692 stroke_p[p++]=box_p[1];
7693 stroke_p[p++]=box_p[2];
7694 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7695 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7696 if (dot_product <= miterlimit)
7697 stroke_q[q++]=box_q[4];
7698 else
7699 {
7700 stroke_q[q++]=box_q[1];
7701 stroke_q[q++]=box_q[2];
7702 }
7703 break;
7704 }
7705 case MiterJoin:
7706 {
7707 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7708 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7709 if (dot_product <= miterlimit)
7710 {
7711 stroke_q[q++]=box_q[4];
7712 stroke_p[p++]=box_p[4];
7713 }
7714 else
7715 {
7716 stroke_q[q++]=box_q[1];
7717 stroke_q[q++]=box_q[2];
7718 stroke_p[p++]=box_p[1];
7719 stroke_p[p++]=box_p[2];
7720 }
7721 break;
7722 }
7723 case RoundJoin:
7724 {
7725 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7726 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7727 if (dot_product <= miterlimit)
7728 stroke_q[q++]=box_q[4];
7729 else
7730 {
7731 stroke_q[q++]=box_q[1];
7732 stroke_q[q++]=box_q[2];
7733 }
7734 center=polygon_primitive[n].point;
7735 theta.p=atan2(box_p[1].y-center.y,box_p[1].x-center.x);
7736 theta.q=atan2(box_p[2].y-center.y,box_p[2].x-center.x);
7737 if (theta.p < theta.q)
7738 theta.p+=2.0*MagickPI;
7739 arc_segments=(size_t) CastDoubleToSsizeT(ceil((double) ((theta.p-
7740 theta.q)/(2.0*sqrt((double) (MagickSafeReciprocal(mid)))))));
7741 DisableMSCWarning(4127)
7742 CheckPathExtent(arc_segments+MaxStrokePad,MaxStrokePad);
7743 RestoreMSCWarning
7744 stroke_p[p++]=box_p[1];
7745 for (j=1; j < (ssize_t) arc_segments; j++)
7746 {
7747 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7748 stroke_p[p].x=(double) (center.x+mid*cos(fmod((double)
7749 (theta.p+delta_theta),DegreesToRadians(360.0))));
7750 stroke_p[p].y=(double) (center.y+mid*sin(fmod((double)
7751 (theta.p+delta_theta),DegreesToRadians(360.0))));
7752 p++;
7753 }
7754 stroke_p[p++]=box_p[2];
7755 break;
7756 }
7757 default:
7758 break;
7759 }
7760 slope.p=slope.q;
7761 inverse_slope.p=inverse_slope.q;
7762 box_p[0]=box_p[2];
7763 box_p[1]=box_p[3];
7764 box_q[0]=box_q[2];
7765 box_q[1]=box_q[3];
7766 dx.p=dx.q;
7767 dy.p=dy.q;
7768 n=i;
7769 }
7770 stroke_p[p++]=box_p[1];
7771 stroke_q[q++]=box_q[1];
7772 /*
7773 Trace stroked polygon.
7774 */
7775 stroke_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7776 (p+q+2L),(size_t) (closed_path+2L)*sizeof(*stroke_polygon));
7777 if (stroke_polygon == (PrimitiveInfo *) NULL)
7778 {
7779 (void) ThrowMagickException(exception,GetMagickModule(),
7780 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7781 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7782 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7783 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7784 polygon_primitive);
7785 return(stroke_polygon);
7786 }
7787 for (i=0; i < (ssize_t) p; i++)
7788 {
7789 stroke_polygon[i]=polygon_primitive[0];
7790 stroke_polygon[i].point=stroke_p[i];
7791 }
7792 if (closed_path != MagickFalse)
7793 {
7794 stroke_polygon[i]=polygon_primitive[0];
7795 stroke_polygon[i].point=stroke_polygon[0].point;
7796 i++;
7797 }
7798 for ( ; i < (ssize_t) (p+q+closed_path); i++)
7799 {
7800 stroke_polygon[i]=polygon_primitive[0];
7801 stroke_polygon[i].point=stroke_q[p+q+closed_path-(i+1)];
7802 }
7803 if (closed_path != MagickFalse)
7804 {
7805 stroke_polygon[i]=polygon_primitive[0];
7806 stroke_polygon[i].point=stroke_polygon[p+closed_path].point;
7807 i++;
7808 }
7809 stroke_polygon[i]=polygon_primitive[0];
7810 stroke_polygon[i].point=stroke_polygon[0].point;
7811 i++;
7812 stroke_polygon[i].primitive=UndefinedPrimitive;
7813 stroke_polygon[0].coordinates=(size_t) (p+q+2*closed_path+1);
7814 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7815 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7816 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(polygon_primitive);
7817 return(stroke_polygon);
7818}
_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