2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
13 % MagickCore Image Special Effects Methods %
20 % Copyright 1999-2011 ImageMagick Studio LLC, a non-profit organization %
21 % dedicated to making software imaging solutions freely available. %
23 % You may not use this file except in compliance with the License. You may %
24 % obtain a copy of the License at %
26 % http://www.imagemagick.org/script/license.php %
28 % Unless required by applicable law or agreed to in writing, software %
29 % distributed under the License is distributed on an "AS IS" BASIS, %
30 % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
31 % See the License for the specific language governing permissions and %
32 % limitations under the License. %
34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
43 #include "magick/studio.h"
44 #include "magick/annotate.h"
45 #include "magick/artifact.h"
46 #include "magick/attribute.h"
47 #include "magick/cache.h"
48 #include "magick/cache-view.h"
49 #include "magick/color.h"
50 #include "magick/color-private.h"
51 #include "magick/composite.h"
52 #include "magick/decorate.h"
53 #include "magick/draw.h"
54 #include "magick/effect.h"
55 #include "magick/enhance.h"
56 #include "magick/exception.h"
57 #include "magick/exception-private.h"
58 #include "magick/fx.h"
59 #include "magick/fx-private.h"
60 #include "magick/gem.h"
61 #include "magick/geometry.h"
62 #include "magick/layer.h"
63 #include "magick/list.h"
64 #include "magick/log.h"
65 #include "magick/image.h"
66 #include "magick/image-private.h"
67 #include "magick/magick.h"
68 #include "magick/memory_.h"
69 #include "magick/monitor.h"
70 #include "magick/monitor-private.h"
71 #include "magick/option.h"
72 #include "magick/pixel-private.h"
73 #include "magick/property.h"
74 #include "magick/quantum.h"
75 #include "magick/quantum-private.h"
76 #include "magick/random_.h"
77 #include "magick/random-private.h"
78 #include "magick/resample.h"
79 #include "magick/resample-private.h"
80 #include "magick/resize.h"
81 #include "magick/shear.h"
82 #include "magick/splay-tree.h"
83 #include "magick/statistic.h"
84 #include "magick/string_.h"
85 #include "magick/string-private.h"
86 #include "magick/thread-private.h"
87 #include "magick/transform.h"
88 #include "magick/utility.h"
93 #define LeftShiftOperator 0xf5
94 #define RightShiftOperator 0xf6
95 #define LessThanEqualOperator 0xf7
96 #define GreaterThanEqualOperator 0xf8
97 #define EqualOperator 0xf9
98 #define NotEqualOperator 0xfa
99 #define LogicalAndOperator 0xfb
100 #define LogicalOrOperator 0xfc
101 #define ExponentialNotation 0xfd
132 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
136 + A c q u i r e F x I n f o %
140 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
142 % AcquireFxInfo() allocates the FxInfo structure.
144 % The format of the AcquireFxInfo method is:
146 % FxInfo *AcquireFxInfo(Image *image,const char *expression)
148 % A description of each parameter follows:
150 % o image: the image.
152 % o expression: the expression.
155 MagickExport FxInfo *AcquireFxInfo(const Image *image,const char *expression)
166 fx_info=(FxInfo *) AcquireMagickMemory(sizeof(*fx_info));
167 if (fx_info == (FxInfo *) NULL)
168 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
169 (void) ResetMagickMemory(fx_info,0,sizeof(*fx_info));
170 fx_info->exception=AcquireExceptionInfo();
171 fx_info->images=image;
172 fx_info->matte=image->matte;
173 fx_info->colors=NewSplayTree(CompareSplayTreeString,RelinquishMagickMemory,
174 RelinquishMagickMemory);
175 fx_info->symbols=NewSplayTree(CompareSplayTreeString,RelinquishMagickMemory,
176 RelinquishMagickMemory);
177 fx_info->resample_filter=(ResampleFilter **) AcquireQuantumMemory(
178 GetImageListLength(fx_info->images),sizeof(*fx_info->resample_filter));
179 if (fx_info->resample_filter == (ResampleFilter **) NULL)
180 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
181 for (i=0; i < (ssize_t) GetImageListLength(fx_info->images); i++)
183 fx_info->resample_filter[i]=AcquireResampleFilter(GetImageFromList(
184 fx_info->images,i),fx_info->exception);
185 SetResampleFilter(fx_info->resample_filter[i],PointFilter,1.0);
187 fx_info->random_info=AcquireRandomInfo();
188 fx_info->expression=ConstantString(expression);
189 fx_info->file=stderr;
190 (void) SubstituteString(&fx_info->expression," ",""); /* compact string */
191 if ((strstr(fx_info->expression,"e+") != (char *) NULL) ||
192 (strstr(fx_info->expression,"e-") != (char *) NULL))
195 Convert scientific notation.
197 (void) SubstituteString(&fx_info->expression,"0e+","0**10^");
198 (void) SubstituteString(&fx_info->expression,"1e+","1**10^");
199 (void) SubstituteString(&fx_info->expression,"2e+","2**10^");
200 (void) SubstituteString(&fx_info->expression,"3e+","3**10^");
201 (void) SubstituteString(&fx_info->expression,"4e+","4**10^");
202 (void) SubstituteString(&fx_info->expression,"5e+","5**10^");
203 (void) SubstituteString(&fx_info->expression,"6e+","6**10^");
204 (void) SubstituteString(&fx_info->expression,"7e+","7**10^");
205 (void) SubstituteString(&fx_info->expression,"8e+","8**10^");
206 (void) SubstituteString(&fx_info->expression,"9e+","9**10^");
207 (void) SubstituteString(&fx_info->expression,"0e-","0**10^-");
208 (void) SubstituteString(&fx_info->expression,"1e-","1**10^-");
209 (void) SubstituteString(&fx_info->expression,"2e-","2**10^-");
210 (void) SubstituteString(&fx_info->expression,"3e-","3**10^-");
211 (void) SubstituteString(&fx_info->expression,"4e-","4**10^-");
212 (void) SubstituteString(&fx_info->expression,"5e-","5**10^-");
213 (void) SubstituteString(&fx_info->expression,"6e-","6**10^-");
214 (void) SubstituteString(&fx_info->expression,"7e-","7**10^-");
215 (void) SubstituteString(&fx_info->expression,"8e-","8**10^-");
216 (void) SubstituteString(&fx_info->expression,"9e-","9**10^-");
219 Force right-to-left associativity for unary negation.
221 (void) SubstituteString(&fx_info->expression,"-","-1.0*");
223 Convert complex to simple operators.
226 *fx_op=(char) LeftShiftOperator;
227 (void) SubstituteString(&fx_info->expression,"<<",fx_op);
228 *fx_op=(char) RightShiftOperator;
229 (void) SubstituteString(&fx_info->expression,">>",fx_op);
230 *fx_op=(char) LessThanEqualOperator;
231 (void) SubstituteString(&fx_info->expression,"<=",fx_op);
232 *fx_op=(char) GreaterThanEqualOperator;
233 (void) SubstituteString(&fx_info->expression,">=",fx_op);
234 *fx_op=(char) EqualOperator;
235 (void) SubstituteString(&fx_info->expression,"==",fx_op);
236 *fx_op=(char) NotEqualOperator;
237 (void) SubstituteString(&fx_info->expression,"!=",fx_op);
238 *fx_op=(char) LogicalAndOperator;
239 (void) SubstituteString(&fx_info->expression,"&&",fx_op);
240 *fx_op=(char) LogicalOrOperator;
241 (void) SubstituteString(&fx_info->expression,"||",fx_op);
242 *fx_op=(char) ExponentialNotation;
243 (void) SubstituteString(&fx_info->expression,"**",fx_op);
248 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
252 % A d d N o i s e I m a g e %
256 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
258 % AddNoiseImage() adds random noise to the image.
260 % The format of the AddNoiseImage method is:
262 % Image *AddNoiseImage(const Image *image,const NoiseType noise_type,
263 % ExceptionInfo *exception)
264 % Image *AddNoiseImageChannel(const Image *image,const ChannelType channel,
265 % const NoiseType noise_type,ExceptionInfo *exception)
267 % A description of each parameter follows:
269 % o image: the image.
271 % o channel: the channel type.
273 % o noise_type: The type of noise: Uniform, Gaussian, Multiplicative,
274 % Impulse, Laplacian, or Poisson.
276 % o exception: return any errors or warnings in this structure.
279 MagickExport Image *AddNoiseImage(const Image *image,const NoiseType noise_type,
280 ExceptionInfo *exception)
285 noise_image=AddNoiseImageChannel(image,DefaultChannels,noise_type,exception);
289 MagickExport Image *AddNoiseImageChannel(const Image *image,
290 const ChannelType channel,const NoiseType noise_type,ExceptionInfo *exception)
292 #define AddNoiseImageTag "AddNoise/Image"
314 **restrict random_info;
320 Initialize noise image attributes.
322 assert(image != (const Image *) NULL);
323 assert(image->signature == MagickSignature);
324 if (image->debug != MagickFalse)
325 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
326 assert(exception != (ExceptionInfo *) NULL);
327 assert(exception->signature == MagickSignature);
328 noise_image=CloneImage(image,0,0,MagickTrue,exception);
329 if (noise_image == (Image *) NULL)
330 return((Image *) NULL);
331 if (SetImageStorageClass(noise_image,DirectClass) == MagickFalse)
333 InheritException(exception,&noise_image->exception);
334 noise_image=DestroyImage(noise_image);
335 return((Image *) NULL);
338 Add noise in each row.
341 option=GetImageArtifact(image,"attenuate");
342 if (option != (char *) NULL)
343 attenuate=StringToDouble(option);
346 random_info=AcquireRandomInfoThreadSet();
347 image_view=AcquireCacheView(image);
348 noise_view=AcquireCacheView(noise_image);
349 #if defined(MAGICKCORE_OPENMP_SUPPORT)
350 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
352 for (y=0; y < (ssize_t) image->rows; y++)
355 id = GetOpenMPThreadId();
360 register const IndexPacket
363 register const PixelPacket
367 *restrict noise_indexes;
375 if (status == MagickFalse)
377 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
378 q=GetCacheViewAuthenticPixels(noise_view,0,y,noise_image->columns,1,
380 if ((p == (PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
385 indexes=GetCacheViewVirtualIndexQueue(image_view);
386 noise_indexes=GetCacheViewAuthenticIndexQueue(noise_view);
387 for (x=0; x < (ssize_t) image->columns; x++)
389 if ((channel & RedChannel) != 0)
390 q->red=ClampToQuantum(GenerateDifferentialNoise(random_info[id],
391 p->red,noise_type,attenuate));
392 if ((channel & GreenChannel) != 0)
393 q->green=ClampToQuantum(GenerateDifferentialNoise(random_info[id],
394 p->green,noise_type,attenuate));
395 if ((channel & BlueChannel) != 0)
396 q->blue=ClampToQuantum(GenerateDifferentialNoise(random_info[id],
397 p->blue,noise_type,attenuate));
398 if ((channel & OpacityChannel) != 0)
399 q->opacity=ClampToQuantum(GenerateDifferentialNoise(random_info[id],
400 p->opacity,noise_type,attenuate));
401 if (((channel & IndexChannel) != 0) &&
402 (image->colorspace == CMYKColorspace))
403 noise_indexes[x]=(IndexPacket) ClampToQuantum(GenerateDifferentialNoise(
404 random_info[id],indexes[x],noise_type,attenuate));
408 sync=SyncCacheViewAuthenticPixels(noise_view,exception);
409 if (sync == MagickFalse)
411 if (image->progress_monitor != (MagickProgressMonitor) NULL)
416 #if defined(MAGICKCORE_OPENMP_SUPPORT)
417 #pragma omp critical (MagickCore_AddNoiseImage)
419 proceed=SetImageProgress(image,AddNoiseImageTag,progress++,
421 if (proceed == MagickFalse)
425 noise_view=DestroyCacheView(noise_view);
426 image_view=DestroyCacheView(image_view);
427 random_info=DestroyRandomInfoThreadSet(random_info);
428 if (status == MagickFalse)
429 noise_image=DestroyImage(noise_image);
434 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
438 % B l u e S h i f t I m a g e %
442 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
444 % BlueShiftImage() mutes the colors of the image to simulate a scene at
445 % nighttime in the moonlight.
447 % The format of the BlueShiftImage method is:
449 % Image *BlueShiftImage(const Image *image,const double factor,
450 % ExceptionInfo *exception)
452 % A description of each parameter follows:
454 % o image: the image.
456 % o factor: the shift factor.
458 % o exception: return any errors or warnings in this structure.
461 MagickExport Image *BlueShiftImage(const Image *image,const double factor,
462 ExceptionInfo *exception)
464 #define BlueShiftImageTag "BlueShift/Image"
483 Allocate blue shift image.
485 assert(image != (const Image *) NULL);
486 assert(image->signature == MagickSignature);
487 if (image->debug != MagickFalse)
488 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
489 assert(exception != (ExceptionInfo *) NULL);
490 assert(exception->signature == MagickSignature);
491 shift_image=CloneImage(image,image->columns,image->rows,MagickTrue,
493 if (shift_image == (Image *) NULL)
494 return((Image *) NULL);
495 if (SetImageStorageClass(shift_image,DirectClass) == MagickFalse)
497 InheritException(exception,&shift_image->exception);
498 shift_image=DestroyImage(shift_image);
499 return((Image *) NULL);
502 Blue-shift DirectClass image.
506 image_view=AcquireCacheView(image);
507 shift_view=AcquireCacheView(shift_image);
508 #if defined(MAGICKCORE_OPENMP_SUPPORT)
509 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
511 for (y=0; y < (ssize_t) image->rows; y++)
522 register const PixelPacket
531 if (status == MagickFalse)
533 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
534 q=QueueCacheViewAuthenticPixels(shift_view,0,y,shift_image->columns,1,
536 if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
541 for (x=0; x < (ssize_t) image->columns; x++)
543 quantum=GetRedPixelComponent(p);
544 if (p->green < quantum)
545 quantum=GetGreenPixelComponent(p);
546 if (p->blue < quantum)
547 quantum=GetBluePixelComponent(p);
548 pixel.red=0.5*(p->red+factor*quantum);
549 pixel.green=0.5*(p->green+factor*quantum);
550 pixel.blue=0.5*(p->blue+factor*quantum);
551 quantum=GetRedPixelComponent(p);
552 if (p->green > quantum)
553 quantum=GetGreenPixelComponent(p);
554 if (p->blue > quantum)
555 quantum=GetBluePixelComponent(p);
556 pixel.red=0.5*(pixel.red+factor*quantum);
557 pixel.green=0.5*(pixel.green+factor*quantum);
558 pixel.blue=0.5*(pixel.blue+factor*quantum);
559 SetRedPixelComponent(q,ClampRedPixelComponent(&pixel));
560 SetGreenPixelComponent(q,ClampGreenPixelComponent(&pixel));
561 SetBluePixelComponent(q,ClampBluePixelComponent(&pixel));
565 sync=SyncCacheViewAuthenticPixels(shift_view,exception);
566 if (sync == MagickFalse)
568 if (image->progress_monitor != (MagickProgressMonitor) NULL)
573 #if defined(MAGICKCORE_OPENMP_SUPPORT)
574 #pragma omp critical (MagickCore_BlueShiftImage)
576 proceed=SetImageProgress(image,BlueShiftImageTag,progress++,
578 if (proceed == MagickFalse)
582 image_view=DestroyCacheView(image_view);
583 shift_view=DestroyCacheView(shift_view);
584 if (status == MagickFalse)
585 shift_image=DestroyImage(shift_image);
590 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
594 % C h a r c o a l I m a g e %
598 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
600 % CharcoalImage() creates a new image that is a copy of an existing one with
601 % the edge highlighted. It allocates the memory necessary for the new Image
602 % structure and returns a pointer to the new image.
604 % The format of the CharcoalImage method is:
606 % Image *CharcoalImage(const Image *image,const double radius,
607 % const double sigma,ExceptionInfo *exception)
609 % A description of each parameter follows:
611 % o image: the image.
613 % o radius: the radius of the pixel neighborhood.
615 % o sigma: the standard deviation of the Gaussian, in pixels.
617 % o exception: return any errors or warnings in this structure.
620 MagickExport Image *CharcoalImage(const Image *image,const double radius,
621 const double sigma,ExceptionInfo *exception)
628 assert(image != (Image *) NULL);
629 assert(image->signature == MagickSignature);
630 if (image->debug != MagickFalse)
631 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
632 assert(exception != (ExceptionInfo *) NULL);
633 assert(exception->signature == MagickSignature);
634 clone_image=CloneImage(image,0,0,MagickTrue,exception);
635 if (clone_image == (Image *) NULL)
636 return((Image *) NULL);
637 (void) SetImageType(clone_image,GrayscaleType);
638 edge_image=EdgeImage(clone_image,radius,exception);
639 clone_image=DestroyImage(clone_image);
640 if (edge_image == (Image *) NULL)
641 return((Image *) NULL);
642 charcoal_image=BlurImage(edge_image,radius,sigma,exception);
643 edge_image=DestroyImage(edge_image);
644 if (charcoal_image == (Image *) NULL)
645 return((Image *) NULL);
646 (void) NormalizeImage(charcoal_image);
647 (void) NegateImage(charcoal_image,MagickFalse);
648 (void) SetImageType(charcoal_image,GrayscaleType);
649 return(charcoal_image);
653 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
657 % C o l o r i z e I m a g e %
661 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
663 % ColorizeImage() blends the fill color with each pixel in the image.
664 % A percentage blend is specified with opacity. Control the application
665 % of different color components by specifying a different percentage for
666 % each component (e.g. 90/100/10 is 90% red, 100% green, and 10% blue).
668 % The format of the ColorizeImage method is:
670 % Image *ColorizeImage(const Image *image,const char *opacity,
671 % const PixelPacket colorize,ExceptionInfo *exception)
673 % A description of each parameter follows:
675 % o image: the image.
677 % o opacity: A character string indicating the level of opacity as a
680 % o colorize: A color value.
682 % o exception: return any errors or warnings in this structure.
685 MagickExport Image *ColorizeImage(const Image *image,const char *opacity,
686 const PixelPacket colorize,ExceptionInfo *exception)
688 #define ColorizeImageTag "Colorize/Image"
716 Allocate colorized image.
718 assert(image != (const Image *) NULL);
719 assert(image->signature == MagickSignature);
720 if (image->debug != MagickFalse)
721 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
722 assert(exception != (ExceptionInfo *) NULL);
723 assert(exception->signature == MagickSignature);
724 colorize_image=CloneImage(image,image->columns,image->rows,MagickTrue,
726 if (colorize_image == (Image *) NULL)
727 return((Image *) NULL);
728 if (SetImageStorageClass(colorize_image,DirectClass) == MagickFalse)
730 InheritException(exception,&colorize_image->exception);
731 colorize_image=DestroyImage(colorize_image);
732 return((Image *) NULL);
734 if (opacity == (const char *) NULL)
735 return(colorize_image);
737 Determine RGB values of the pen color.
739 flags=ParseGeometry(opacity,&geometry_info);
740 pixel.red=geometry_info.rho;
741 pixel.green=geometry_info.rho;
742 pixel.blue=geometry_info.rho;
743 pixel.opacity=(MagickRealType) OpaqueOpacity;
744 if ((flags & SigmaValue) != 0)
745 pixel.green=geometry_info.sigma;
746 if ((flags & XiValue) != 0)
747 pixel.blue=geometry_info.xi;
748 if ((flags & PsiValue) != 0)
749 pixel.opacity=geometry_info.psi;
751 Colorize DirectClass image.
755 image_view=AcquireCacheView(image);
756 colorize_view=AcquireCacheView(colorize_image);
757 #if defined(MAGICKCORE_OPENMP_SUPPORT)
758 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
760 for (y=0; y < (ssize_t) image->rows; y++)
765 register const PixelPacket
774 if (status == MagickFalse)
776 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
777 q=QueueCacheViewAuthenticPixels(colorize_view,0,y,colorize_image->columns,1,
779 if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
784 for (x=0; x < (ssize_t) image->columns; x++)
786 q->red=(Quantum) ((p->red*(100.0-pixel.red)+
787 colorize.red*pixel.red)/100.0);
788 q->green=(Quantum) ((p->green*(100.0-pixel.green)+
789 colorize.green*pixel.green)/100.0);
790 q->blue=(Quantum) ((p->blue*(100.0-pixel.blue)+
791 colorize.blue*pixel.blue)/100.0);
792 q->opacity=(Quantum) ((p->opacity*(100.0-pixel.opacity)+
793 colorize.opacity*pixel.opacity)/100.0);
797 sync=SyncCacheViewAuthenticPixels(colorize_view,exception);
798 if (sync == MagickFalse)
800 if (image->progress_monitor != (MagickProgressMonitor) NULL)
805 #if defined(MAGICKCORE_OPENMP_SUPPORT)
806 #pragma omp critical (MagickCore_ColorizeImage)
808 proceed=SetImageProgress(image,ColorizeImageTag,progress++,image->rows);
809 if (proceed == MagickFalse)
813 image_view=DestroyCacheView(image_view);
814 colorize_view=DestroyCacheView(colorize_view);
815 if (status == MagickFalse)
816 colorize_image=DestroyImage(colorize_image);
817 return(colorize_image);
821 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
825 % C o l o r M a t r i x I m a g e %
829 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
831 % ColorMatrixImage() applies color transformation to an image. This method
832 % permits saturation changes, hue rotation, luminance to alpha, and various
833 % other effects. Although variable-sized transformation matrices can be used,
834 % typically one uses a 5x5 matrix for an RGBA image and a 6x6 for CMYKA
835 % (or RGBA with offsets). The matrix is similar to those used by Adobe Flash
836 % except offsets are in column 6 rather than 5 (in support of CMYKA images)
837 % and offsets are normalized (divide Flash offset by 255).
839 % The format of the ColorMatrixImage method is:
841 % Image *ColorMatrixImage(const Image *image,
842 % const KernelInfo *color_matrix,ExceptionInfo *exception)
844 % A description of each parameter follows:
846 % o image: the image.
848 % o color_matrix: the color matrix.
850 % o exception: return any errors or warnings in this structure.
853 MagickExport Image *ColorMatrixImage(const Image *image,
854 const KernelInfo *color_matrix,ExceptionInfo *exception)
856 #define ColorMatrixImageTag "ColorMatrix/Image"
865 { 1.0, 0.0, 0.0, 0.0, 0.0, 0.0 },
866 { 0.0, 1.0, 0.0, 0.0, 0.0, 0.0 },
867 { 0.0, 0.0, 1.0, 0.0, 0.0, 0.0 },
868 { 0.0, 0.0, 0.0, 1.0, 0.0, 0.0 },
869 { 0.0, 0.0, 0.0, 0.0, 1.0, 0.0 },
870 { 0.0, 0.0, 0.0, 0.0, 0.0, 1.0 }
893 assert(image != (Image *) NULL);
894 assert(image->signature == MagickSignature);
895 if (image->debug != MagickFalse)
896 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
897 assert(exception != (ExceptionInfo *) NULL);
898 assert(exception->signature == MagickSignature);
900 for (v=0; v < (ssize_t) color_matrix->height; v++)
901 for (u=0; u < (ssize_t) color_matrix->width; u++)
903 if ((v < 6) && (u < 6))
904 ColorMatrix[v][u]=color_matrix->values[i];
908 Initialize color image.
910 color_image=CloneImage(image,0,0,MagickTrue,exception);
911 if (color_image == (Image *) NULL)
912 return((Image *) NULL);
913 if (SetImageStorageClass(color_image,DirectClass) == MagickFalse)
915 InheritException(exception,&color_image->exception);
916 color_image=DestroyImage(color_image);
917 return((Image *) NULL);
919 if (image->debug != MagickFalse)
922 format[MaxTextExtent],
925 (void) LogMagickEvent(TransformEvent,GetMagickModule(),
926 " ColorMatrix image with color matrix:");
927 message=AcquireString("");
928 for (v=0; v < 6; v++)
931 (void) FormatMagickString(format,MaxTextExtent,"%.20g: ",(double) v);
932 (void) ConcatenateString(&message,format);
933 for (u=0; u < 6; u++)
935 (void) FormatMagickString(format,MaxTextExtent,"%+f ",
937 (void) ConcatenateString(&message,format);
939 (void) LogMagickEvent(TransformEvent,GetMagickModule(),"%s",message);
941 message=DestroyString(message);
948 image_view=AcquireCacheView(image);
949 color_view=AcquireCacheView(color_image);
950 #if defined(MAGICKCORE_OPENMP_SUPPORT)
951 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
953 for (y=0; y < (ssize_t) image->rows; y++)
958 register const IndexPacket
961 register const PixelPacket
968 *restrict color_indexes;
973 if (status == MagickFalse)
975 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
976 q=GetCacheViewAuthenticPixels(color_view,0,y,color_image->columns,1,
978 if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
983 indexes=GetCacheViewVirtualIndexQueue(image_view);
984 color_indexes=GetCacheViewAuthenticIndexQueue(color_view);
985 for (x=0; x < (ssize_t) image->columns; x++)
993 height=color_matrix->height > 6 ? 6UL : color_matrix->height;
994 for (v=0; v < (ssize_t) height; v++)
996 pixel=ColorMatrix[v][0]*p->red+ColorMatrix[v][1]*p->green+
997 ColorMatrix[v][2]*p->blue;
998 if (image->matte != MagickFalse)
999 pixel+=ColorMatrix[v][3]*(QuantumRange-p->opacity);
1000 if (image->colorspace == CMYKColorspace)
1001 pixel+=ColorMatrix[v][4]*indexes[x];
1002 pixel+=QuantumRange*ColorMatrix[v][5];
1005 case 0: q->red=ClampToQuantum(pixel); break;
1006 case 1: q->green=ClampToQuantum(pixel); break;
1007 case 2: q->blue=ClampToQuantum(pixel); break;
1010 if (image->matte != MagickFalse)
1011 q->opacity=ClampToQuantum(QuantumRange-pixel);
1016 if (image->colorspace == CMYKColorspace)
1017 color_indexes[x]=ClampToQuantum(pixel);
1025 if (SyncCacheViewAuthenticPixels(color_view,exception) == MagickFalse)
1027 if (image->progress_monitor != (MagickProgressMonitor) NULL)
1032 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1033 #pragma omp critical (MagickCore_ColorMatrixImage)
1035 proceed=SetImageProgress(image,ColorMatrixImageTag,progress++,
1037 if (proceed == MagickFalse)
1041 color_view=DestroyCacheView(color_view);
1042 image_view=DestroyCacheView(image_view);
1043 if (status == MagickFalse)
1044 color_image=DestroyImage(color_image);
1045 return(color_image);
1049 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1053 + D e s t r o y F x I n f o %
1057 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1059 % DestroyFxInfo() deallocates memory associated with an FxInfo structure.
1061 % The format of the DestroyFxInfo method is:
1063 % ImageInfo *DestroyFxInfo(ImageInfo *fx_info)
1065 % A description of each parameter follows:
1067 % o fx_info: the fx info.
1070 MagickExport FxInfo *DestroyFxInfo(FxInfo *fx_info)
1075 fx_info->exception=DestroyExceptionInfo(fx_info->exception);
1076 fx_info->expression=DestroyString(fx_info->expression);
1077 fx_info->symbols=DestroySplayTree(fx_info->symbols);
1078 fx_info->colors=DestroySplayTree(fx_info->colors);
1079 for (i=0; i < (ssize_t) GetImageListLength(fx_info->images); i++)
1080 fx_info->resample_filter[i]=DestroyResampleFilter(
1081 fx_info->resample_filter[i]);
1082 fx_info->resample_filter=(ResampleFilter **) RelinquishMagickMemory(
1083 fx_info->resample_filter);
1084 fx_info->random_info=DestroyRandomInfo(fx_info->random_info);
1085 fx_info=(FxInfo *) RelinquishMagickMemory(fx_info);
1090 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1094 + F x E v a l u a t e C h a n n e l E x p r e s s i o n %
1098 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1100 % FxEvaluateChannelExpression() evaluates an expression and returns the
1103 % The format of the FxEvaluateExpression method is:
1105 % MagickRealType FxEvaluateChannelExpression(FxInfo *fx_info,
1106 % const ChannelType channel,const ssize_t x,const ssize_t y,
1107 % MagickRealType *alpha,Exceptioninfo *exception)
1108 % MagickRealType FxEvaluateExpression(FxInfo *fx_info,
1109 % MagickRealType *alpha,Exceptioninfo *exception)
1111 % A description of each parameter follows:
1113 % o fx_info: the fx info.
1115 % o channel: the channel.
1117 % o x,y: the pixel position.
1119 % o alpha: the result.
1121 % o exception: return any errors or warnings in this structure.
1125 static inline double MagickMax(const double x,const double y)
1132 static inline double MagickMin(const double x,const double y)
1139 static MagickRealType FxChannelStatistics(FxInfo *fx_info,const Image *image,
1140 ChannelType channel,const char *symbol,ExceptionInfo *exception)
1144 statistic[MaxTextExtent];
1152 for (p=symbol; (*p != '.') && (*p != '\0'); p++) ;
1154 switch (*++p) /* e.g. depth.r */
1156 case 'r': channel=RedChannel; break;
1157 case 'g': channel=GreenChannel; break;
1158 case 'b': channel=BlueChannel; break;
1159 case 'c': channel=CyanChannel; break;
1160 case 'm': channel=MagentaChannel; break;
1161 case 'y': channel=YellowChannel; break;
1162 case 'k': channel=BlackChannel; break;
1165 (void) FormatMagickString(key,MaxTextExtent,"%p.%.20g.%s",(void *) image,
1166 (double) channel,symbol);
1167 value=(const char *) GetValueFromSplayTree(fx_info->symbols,key);
1168 if (value != (const char *) NULL)
1169 return(QuantumScale*StringToDouble(value));
1170 (void) DeleteNodeFromSplayTree(fx_info->symbols,key);
1171 if (LocaleNCompare(symbol,"depth",5) == 0)
1176 depth=GetImageChannelDepth(image,channel,exception);
1177 (void) FormatMagickString(statistic,MaxTextExtent,"%.20g",(double)
1180 if (LocaleNCompare(symbol,"kurtosis",8) == 0)
1186 (void) GetImageChannelKurtosis(image,channel,&kurtosis,&skewness,
1188 (void) FormatMagickString(statistic,MaxTextExtent,"%g",kurtosis);
1190 if (LocaleNCompare(symbol,"maxima",6) == 0)
1196 (void) GetImageChannelRange(image,channel,&minima,&maxima,exception);
1197 (void) FormatMagickString(statistic,MaxTextExtent,"%g",maxima);
1199 if (LocaleNCompare(symbol,"mean",4) == 0)
1205 (void) GetImageChannelMean(image,channel,&mean,&standard_deviation,
1207 (void) FormatMagickString(statistic,MaxTextExtent,"%g",mean);
1209 if (LocaleNCompare(symbol,"minima",6) == 0)
1215 (void) GetImageChannelRange(image,channel,&minima,&maxima,exception);
1216 (void) FormatMagickString(statistic,MaxTextExtent,"%g",minima);
1218 if (LocaleNCompare(symbol,"skewness",8) == 0)
1224 (void) GetImageChannelKurtosis(image,channel,&kurtosis,&skewness,
1226 (void) FormatMagickString(statistic,MaxTextExtent,"%g",skewness);
1228 if (LocaleNCompare(symbol,"standard_deviation",18) == 0)
1234 (void) GetImageChannelMean(image,channel,&mean,&standard_deviation,
1236 (void) FormatMagickString(statistic,MaxTextExtent,"%g",
1237 standard_deviation);
1239 (void) AddValueToSplayTree(fx_info->symbols,ConstantString(key),
1240 ConstantString(statistic));
1241 return(QuantumScale*StringToDouble(statistic));
1244 static MagickRealType
1245 FxEvaluateSubexpression(FxInfo *,const ChannelType,const ssize_t,
1246 const ssize_t,const char *,MagickRealType *,ExceptionInfo *);
1248 static inline MagickRealType FxMax(FxInfo *fx_info,const ChannelType channel,
1249 const ssize_t x,const ssize_t y,const char *expression,
1250 ExceptionInfo *exception)
1256 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression,&beta,exception);
1257 return((MagickRealType) MagickMax((double) alpha,(double) beta));
1260 static inline MagickRealType FxMin(FxInfo *fx_info,ChannelType channel,
1261 const ssize_t x,const ssize_t y,const char *expression,
1262 ExceptionInfo *exception)
1268 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression,&beta,exception);
1269 return((MagickRealType) MagickMin((double) alpha,(double) beta));
1272 static inline const char *FxSubexpression(const char *expression,
1273 ExceptionInfo *exception)
1282 subexpression=expression;
1283 while ((*subexpression != '\0') &&
1284 ((level != 1) || (strchr(")",(int) *subexpression) == (char *) NULL)))
1286 if (strchr("(",(int) *subexpression) != (char *) NULL)
1289 if (strchr(")",(int) *subexpression) != (char *) NULL)
1293 if (*subexpression == '\0')
1294 (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
1295 "UnbalancedParenthesis","`%s'",expression);
1296 return(subexpression);
1299 static MagickRealType FxGetSymbol(FxInfo *fx_info,const ChannelType channel,
1300 const ssize_t x,const ssize_t y,const char *expression,
1301 ExceptionInfo *exception)
1305 subexpression[MaxTextExtent],
1306 symbol[MaxTextExtent];
1335 i=GetImageIndexInList(fx_info->images);
1339 if (isalpha((int) *(p+1)) == 0)
1341 if (strchr("suv",(int) *p) != (char *) NULL)
1348 i=GetImageIndexInList(fx_info->images);
1351 case 'u': i=0; break;
1352 case 'v': i=1; break;
1359 for (p++; *p != '\0'; )
1373 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,subexpression,
1375 i=(ssize_t) (alpha+0.5);
1381 if ((isalpha((int) *(p+1)) == 0) && (*p == 'p'))
1388 for (p++; *p != '\0'; )
1402 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,subexpression,
1413 for (p++; *p != '\0'; )
1427 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,subexpression,
1437 length=GetImageListLength(fx_info->images);
1439 i+=(ssize_t) length;
1441 image=GetImageFromList(fx_info->images,i);
1442 if (image == (Image *) NULL)
1444 (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
1445 "NoSuchImage","`%s'",expression);
1448 (void) ResamplePixelColor(fx_info->resample_filter[i],point.x,point.y,&pixel);
1449 if ((strlen(p) > 2) &&
1450 (LocaleCompare(p,"intensity") != 0) &&
1451 (LocaleCompare(p,"luminance") != 0) &&
1452 (LocaleCompare(p,"hue") != 0) &&
1453 (LocaleCompare(p,"saturation") != 0) &&
1454 (LocaleCompare(p,"lightness") != 0))
1457 name[MaxTextExtent];
1459 (void) CopyMagickString(name,p,MaxTextExtent);
1460 for (q=name+(strlen(name)-1); q > name; q--)
1470 if ((strlen(name) > 2) &&
1471 (GetValueFromSplayTree(fx_info->symbols,name) == (const char *) NULL))
1476 color=(MagickPixelPacket *) GetValueFromSplayTree(fx_info->colors,
1478 if (color != (MagickPixelPacket *) NULL)
1484 if (QueryMagickColor(name,&pixel,fx_info->exception) != MagickFalse)
1486 (void) AddValueToSplayTree(fx_info->colors,ConstantString(name),
1487 CloneMagickPixelPacket(&pixel));
1492 (void) CopyMagickString(symbol,p,MaxTextExtent);
1493 StripString(symbol);
1494 if (*symbol == '\0')
1498 case RedChannel: return(QuantumScale*pixel.red);
1499 case GreenChannel: return(QuantumScale*pixel.green);
1500 case BlueChannel: return(QuantumScale*pixel.blue);
1501 case OpacityChannel:
1503 if (pixel.matte == MagickFalse)
1505 fx_info->matte=MagickFalse;
1508 return((MagickRealType) (QuantumScale*GetAlphaPixelComponent(&pixel)));
1512 if (image->colorspace != CMYKColorspace)
1514 (void) ThrowMagickException(exception,GetMagickModule(),
1515 OptionError,"ColorSeparatedImageRequired","`%s'",
1519 return(QuantumScale*pixel.index);
1524 (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
1525 "UnableToParseExpression","`%s'",p);
1533 if (LocaleCompare(symbol,"a") == 0)
1534 return((MagickRealType) (QuantumScale*GetAlphaPixelComponent(&pixel)));
1540 if (LocaleCompare(symbol,"b") == 0)
1541 return(QuantumScale*pixel.blue);
1547 if (LocaleNCompare(symbol,"channel",7) == 0)
1555 flags=ParseGeometry(symbol+7,&channel_info);
1556 if (image->colorspace == CMYKColorspace)
1561 if ((flags & RhoValue) == 0)
1563 return(channel_info.rho);
1565 case MagentaChannel:
1567 if ((flags & SigmaValue) == 0)
1569 return(channel_info.sigma);
1573 if ((flags & XiValue) == 0)
1575 return(channel_info.xi);
1579 if ((flags & PsiValue) == 0)
1581 return(channel_info.psi);
1583 case OpacityChannel:
1585 if ((flags & ChiValue) == 0)
1587 return(channel_info.chi);
1596 if ((flags & RhoValue) == 0)
1598 return(channel_info.rho);
1602 if ((flags & SigmaValue) == 0)
1604 return(channel_info.sigma);
1608 if ((flags & XiValue) == 0)
1610 return(channel_info.xi);
1612 case OpacityChannel:
1614 if ((flags & PsiValue) == 0)
1616 return(channel_info.psi);
1620 if ((flags & ChiValue) == 0)
1622 return(channel_info.chi);
1629 if (LocaleCompare(symbol,"c") == 0)
1630 return(QuantumScale*pixel.red);
1636 if (LocaleNCompare(symbol,"depth",5) == 0)
1637 return(FxChannelStatistics(fx_info,image,channel,symbol,exception));
1643 if (LocaleCompare(symbol,"g") == 0)
1644 return(QuantumScale*pixel.green);
1650 if (LocaleNCompare(symbol,"kurtosis",8) == 0)
1651 return(FxChannelStatistics(fx_info,image,channel,symbol,exception));
1652 if (LocaleCompare(symbol,"k") == 0)
1654 if (image->colorspace != CMYKColorspace)
1656 (void) ThrowMagickException(exception,GetMagickModule(),
1657 OptionError,"ColorSeparatedImageRequired","`%s'",
1661 return(QuantumScale*pixel.index);
1668 if (LocaleCompare(symbol,"h") == 0)
1669 return((MagickRealType) image->rows);
1670 if (LocaleCompare(symbol,"hue") == 0)
1677 ConvertRGBToHSL(ClampToQuantum(pixel.red),ClampToQuantum(pixel.green),
1678 ClampToQuantum(pixel.blue),&hue,&saturation,&lightness);
1686 if ((LocaleCompare(symbol,"image.depth") == 0) ||
1687 (LocaleCompare(symbol,"image.minima") == 0) ||
1688 (LocaleCompare(symbol,"image.maxima") == 0) ||
1689 (LocaleCompare(symbol,"image.mean") == 0) ||
1690 (LocaleCompare(symbol,"image.kurtosis") == 0) ||
1691 (LocaleCompare(symbol,"image.skewness") == 0) ||
1692 (LocaleCompare(symbol,"image.standard_deviation") == 0))
1693 return(FxChannelStatistics(fx_info,image,channel,symbol+6,exception));
1694 if (LocaleCompare(symbol,"image.resolution.x") == 0)
1695 return(image->x_resolution);
1696 if (LocaleCompare(symbol,"image.resolution.y") == 0)
1697 return(image->y_resolution);
1698 if (LocaleCompare(symbol,"intensity") == 0)
1699 return(QuantumScale*MagickPixelIntensityToQuantum(&pixel));
1700 if (LocaleCompare(symbol,"i") == 0)
1701 return((MagickRealType) x);
1707 if (LocaleCompare(symbol,"j") == 0)
1708 return((MagickRealType) y);
1714 if (LocaleCompare(symbol,"lightness") == 0)
1721 ConvertRGBToHSL(ClampToQuantum(pixel.red),ClampToQuantum(pixel.green),
1722 ClampToQuantum(pixel.blue),&hue,&saturation,&lightness);
1725 if (LocaleCompare(symbol,"luminance") == 0)
1730 luminence=0.2126*pixel.red+0.7152*pixel.green+0.0722*pixel.blue;
1731 return(QuantumScale*luminence);
1738 if (LocaleNCompare(symbol,"maxima",6) == 0)
1739 return(FxChannelStatistics(fx_info,image,channel,symbol,exception));
1740 if (LocaleNCompare(symbol,"mean",4) == 0)
1741 return(FxChannelStatistics(fx_info,image,channel,symbol,exception));
1742 if (LocaleNCompare(symbol,"minima",6) == 0)
1743 return(FxChannelStatistics(fx_info,image,channel,symbol,exception));
1744 if (LocaleCompare(symbol,"m") == 0)
1745 return(QuantumScale*pixel.blue);
1751 if (LocaleCompare(symbol,"n") == 0)
1752 return((MagickRealType) GetImageListLength(fx_info->images));
1758 if (LocaleCompare(symbol,"o") == 0)
1759 return(QuantumScale*pixel.opacity);
1765 if (LocaleCompare(symbol,"page.height") == 0)
1766 return((MagickRealType) image->page.height);
1767 if (LocaleCompare(symbol,"page.width") == 0)
1768 return((MagickRealType) image->page.width);
1769 if (LocaleCompare(symbol,"page.x") == 0)
1770 return((MagickRealType) image->page.x);
1771 if (LocaleCompare(symbol,"page.y") == 0)
1772 return((MagickRealType) image->page.y);
1778 if (LocaleCompare(symbol,"resolution.x") == 0)
1779 return(image->x_resolution);
1780 if (LocaleCompare(symbol,"resolution.y") == 0)
1781 return(image->y_resolution);
1782 if (LocaleCompare(symbol,"r") == 0)
1783 return(QuantumScale*pixel.red);
1789 if (LocaleCompare(symbol,"saturation") == 0)
1796 ConvertRGBToHSL(ClampToQuantum(pixel.red),ClampToQuantum(pixel.green),
1797 ClampToQuantum(pixel.blue),&hue,&saturation,&lightness);
1800 if (LocaleNCompare(symbol,"skewness",8) == 0)
1801 return(FxChannelStatistics(fx_info,image,channel,symbol,exception));
1802 if (LocaleNCompare(symbol,"standard_deviation",18) == 0)
1803 return(FxChannelStatistics(fx_info,image,channel,symbol,exception));
1809 if (LocaleCompare(symbol,"t") == 0)
1810 return((MagickRealType) fx_info->images->scene);
1816 if (LocaleCompare(symbol,"w") == 0)
1817 return((MagickRealType) image->columns);
1823 if (LocaleCompare(symbol,"y") == 0)
1824 return(QuantumScale*pixel.green);
1830 if (LocaleCompare(symbol,"z") == 0)
1835 depth=(MagickRealType) GetImageChannelDepth(image,channel,
1836 fx_info->exception);
1844 value=(const char *) GetValueFromSplayTree(fx_info->symbols,symbol);
1845 if (value != (const char *) NULL)
1846 return((MagickRealType) StringToDouble(value));
1847 (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
1848 "UnableToParseExpression","`%s'",symbol);
1852 static const char *FxOperatorPrecedence(const char *expression,
1853 ExceptionInfo *exception)
1857 UndefinedPrecedence,
1859 BitwiseComplementPrecedence,
1861 ExponentialNotationPrecedence,
1865 RelationalPrecedence,
1866 EquivalencyPrecedence,
1867 BitwiseAndPrecedence,
1868 BitwiseOrPrecedence,
1869 LogicalAndPrecedence,
1870 LogicalOrPrecedence,
1872 AssignmentPrecedence,
1892 subexpression=(const char *) NULL;
1893 target=NullPrecedence;
1894 while (*expression != '\0')
1896 precedence=UndefinedPrecedence;
1897 if ((isspace((int) ((char) *expression)) != 0) || (c == (int) '@'))
1902 switch (*expression)
1907 if (LocaleNCompare(expression,"atan2",5) == 0)
1917 if ((LocaleNCompare(expression,"j0",2) == 0) ||
1918 (LocaleNCompare(expression,"j1",2) == 0))
1927 while (isxdigit((int) ((unsigned char) *(expression+1))) != 0)
1934 if ((c == (int) '{') || (c == (int) '['))
1937 if ((c == (int) '}') || (c == (int) ']'))
1940 switch ((unsigned char) *expression)
1945 precedence=BitwiseComplementPrecedence;
1951 precedence=ExponentPrecedence;
1956 if (((c != 0) && ((isdigit((int) ((char) c)) != 0) ||
1957 (strchr(")",c) != (char *) NULL))) &&
1958 (((islower((int) ((char) *expression)) != 0) ||
1959 (strchr("(",(int) *expression) != (char *) NULL)) ||
1960 ((isdigit((int) ((char) c)) == 0) &&
1961 (isdigit((int) ((char) *expression)) != 0))) &&
1962 (strchr("xy",(int) *expression) == (char *) NULL))
1963 precedence=MultiplyPrecedence;
1970 precedence=MultiplyPrecedence;
1976 if ((strchr("(+-/*%:&^|<>~,",c) == (char *) NULL) ||
1978 precedence=AdditionPrecedence;
1981 case LeftShiftOperator:
1982 case RightShiftOperator:
1984 precedence=ShiftPrecedence;
1988 case LessThanEqualOperator:
1989 case GreaterThanEqualOperator:
1992 precedence=RelationalPrecedence;
1996 case NotEqualOperator:
1998 precedence=EquivalencyPrecedence;
2003 precedence=BitwiseAndPrecedence;
2008 precedence=BitwiseOrPrecedence;
2011 case LogicalAndOperator:
2013 precedence=LogicalAndPrecedence;
2016 case LogicalOrOperator:
2018 precedence=LogicalOrPrecedence;
2021 case ExponentialNotation:
2023 precedence=ExponentialNotationPrecedence;
2029 precedence=TernaryPrecedence;
2034 precedence=AssignmentPrecedence;
2039 precedence=CommaPrecedence;
2044 precedence=SeparatorPrecedence;
2048 if ((precedence == BitwiseComplementPrecedence) ||
2049 (precedence == TernaryPrecedence) ||
2050 (precedence == AssignmentPrecedence))
2052 if (precedence > target)
2055 Right-to-left associativity.
2058 subexpression=expression;
2062 if (precedence >= target)
2065 Left-to-right associativity.
2068 subexpression=expression;
2070 if (strchr("(",(int) *expression) != (char *) NULL)
2071 expression=FxSubexpression(expression,exception);
2072 c=(int) (*expression++);
2074 return(subexpression);
2077 static MagickRealType FxEvaluateSubexpression(FxInfo *fx_info,
2078 const ChannelType channel,const ssize_t x,const ssize_t y,
2079 const char *expression,MagickRealType *beta,ExceptionInfo *exception)
2083 subexpression[MaxTextExtent];
2093 if (exception->severity != UndefinedException)
2095 while (isspace((int) *expression) != 0)
2097 if (*expression == '\0')
2099 (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
2100 "MissingExpression","`%s'",expression);
2103 *subexpression='\0';
2104 p=FxOperatorPrecedence(expression,exception);
2105 if (p != (const char *) NULL)
2107 (void) CopyMagickString(subexpression,expression,(size_t)
2109 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,subexpression,beta,
2111 switch ((unsigned char) *p)
2115 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2116 *beta=(MagickRealType) (~(size_t) *beta);
2121 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2122 return(*beta == 0.0 ? 1.0 : 0.0);
2126 *beta=pow((double) alpha,(double) FxEvaluateSubexpression(fx_info,
2127 channel,x,y,++p,beta,exception));
2131 case ExponentialNotation:
2133 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2134 return(alpha*(*beta));
2138 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2141 if (exception->severity == UndefinedException)
2142 (void) ThrowMagickException(exception,GetMagickModule(),
2143 OptionError,"DivideByZero","`%s'",expression);
2146 return(alpha/(*beta));
2150 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2151 *beta=fabs(floor(((double) *beta)+0.5));
2154 (void) ThrowMagickException(exception,GetMagickModule(),
2155 OptionError,"DivideByZero","`%s'",expression);
2158 return(fmod((double) alpha,(double) *beta));
2162 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2163 return(alpha+(*beta));
2167 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2168 return(alpha-(*beta));
2170 case LeftShiftOperator:
2172 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2173 *beta=(MagickRealType) ((size_t) (alpha+0.5) << (size_t)
2177 case RightShiftOperator:
2179 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2180 *beta=(MagickRealType) ((size_t) (alpha+0.5) >> (size_t)
2186 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2187 return(alpha < *beta ? 1.0 : 0.0);
2189 case LessThanEqualOperator:
2191 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2192 return(alpha <= *beta ? 1.0 : 0.0);
2196 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2197 return(alpha > *beta ? 1.0 : 0.0);
2199 case GreaterThanEqualOperator:
2201 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2202 return(alpha >= *beta ? 1.0 : 0.0);
2206 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2207 return(fabs(alpha-(*beta)) <= MagickEpsilon ? 1.0 : 0.0);
2209 case NotEqualOperator:
2211 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2212 return(fabs(alpha-(*beta)) > MagickEpsilon ? 1.0 : 0.0);
2216 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2217 *beta=(MagickRealType) ((size_t) (alpha+0.5) & (size_t)
2223 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2224 *beta=(MagickRealType) ((size_t) (alpha+0.5) | (size_t)
2228 case LogicalAndOperator:
2230 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2231 *beta=(alpha > 0.0) && (gamma > 0.0) ? 1.0 : 0.0;
2234 case LogicalOrOperator:
2236 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2237 *beta=(alpha > 0.0) || (gamma > 0.0) ? 1.0 : 0.0;
2245 (void) CopyMagickString(subexpression,++p,MaxTextExtent);
2247 p=StringToken(":",&q);
2248 if (q == (char *) NULL)
2250 (void) ThrowMagickException(exception,GetMagickModule(),
2251 OptionError,"UnableToParseExpression","`%s'",subexpression);
2254 if (fabs((double) alpha) > MagickEpsilon)
2255 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,p,beta,exception);
2257 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,q,beta,exception);
2263 numeric[MaxTextExtent];
2266 while (isalpha((int) ((unsigned char) *q)) != 0)
2270 (void) ThrowMagickException(exception,GetMagickModule(),
2271 OptionError,"UnableToParseExpression","`%s'",subexpression);
2274 ClearMagickException(exception);
2275 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2276 (void) FormatMagickString(numeric,MaxTextExtent,"%g",(double)
2278 (void) DeleteNodeFromSplayTree(fx_info->symbols,subexpression);
2279 (void) AddValueToSplayTree(fx_info->symbols,ConstantString(
2280 subexpression),ConstantString(numeric));
2285 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2290 *beta=FxEvaluateSubexpression(fx_info,channel,x,y,++p,beta,exception);
2295 gamma=alpha*FxEvaluateSubexpression(fx_info,channel,x,y,p,beta,
2301 if (strchr("(",(int) *expression) != (char *) NULL)
2303 (void) CopyMagickString(subexpression,expression+1,MaxTextExtent);
2304 subexpression[strlen(subexpression)-1]='\0';
2305 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,subexpression,beta,
2309 switch (*expression)
2313 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,expression+1,beta,
2319 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,expression+1,beta,
2325 gamma=FxEvaluateSubexpression(fx_info,channel,x,y,expression+1,beta,
2327 return((MagickRealType) (~(size_t) (gamma+0.5)));
2332 if (LocaleNCompare(expression,"abs",3) == 0)
2334 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,beta,
2336 return((MagickRealType) fabs((double) alpha));
2338 if (LocaleNCompare(expression,"acos",4) == 0)
2340 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2342 return((MagickRealType) acos((double) alpha));
2344 #if defined(MAGICKCORE_HAVE_J1)
2345 if (LocaleNCompare(expression,"airy",4) == 0)
2347 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2351 gamma=2.0*j1((double) (MagickPI*alpha))/(MagickPI*alpha);
2352 return(gamma*gamma);
2355 if (LocaleNCompare(expression,"asin",4) == 0)
2357 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2359 return((MagickRealType) asin((double) alpha));
2361 if (LocaleNCompare(expression,"alt",3) == 0)
2363 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,beta,
2365 return(((ssize_t) alpha) & 0x01 ? -1.0 : 1.0);
2367 if (LocaleNCompare(expression,"atan2",5) == 0)
2369 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,beta,
2371 return((MagickRealType) atan2((double) alpha,(double) *beta));
2373 if (LocaleNCompare(expression,"atan",4) == 0)
2375 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2377 return((MagickRealType) atan((double) alpha));
2379 if (LocaleCompare(expression,"a") == 0)
2380 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2386 if (LocaleCompare(expression,"b") == 0)
2387 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2393 if (LocaleNCompare(expression,"ceil",4) == 0)
2395 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2397 return((MagickRealType) ceil((double) alpha));
2399 if (LocaleNCompare(expression,"cosh",4) == 0)
2401 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2403 return((MagickRealType) cosh((double) alpha));
2405 if (LocaleNCompare(expression,"cos",3) == 0)
2407 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,beta,
2409 return((MagickRealType) cos((double) alpha));
2411 if (LocaleCompare(expression,"c") == 0)
2412 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2418 if (LocaleNCompare(expression,"debug",5) == 0)
2423 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,beta,
2425 if (fx_info->images->colorspace == CMYKColorspace)
2428 case CyanChannel: type="cyan"; break;
2429 case MagentaChannel: type="magenta"; break;
2430 case YellowChannel: type="yellow"; break;
2431 case OpacityChannel: type="opacity"; break;
2432 case BlackChannel: type="black"; break;
2433 default: type="unknown"; break;
2438 case RedChannel: type="red"; break;
2439 case GreenChannel: type="green"; break;
2440 case BlueChannel: type="blue"; break;
2441 case OpacityChannel: type="opacity"; break;
2442 default: type="unknown"; break;
2444 (void) CopyMagickString(subexpression,expression+6,MaxTextExtent);
2445 if (strlen(subexpression) > 1)
2446 subexpression[strlen(subexpression)-1]='\0';
2447 if (fx_info->file != (FILE *) NULL)
2448 (void) fprintf(fx_info->file,"%s[%.20g,%.20g].%s: %s=%.*g\n",
2449 fx_info->images->filename,(double) x,(double) y,type,
2450 subexpression,GetMagickPrecision(),(double) alpha);
2458 if (LocaleCompare(expression,"epsilon") == 0)
2459 return((MagickRealType) MagickEpsilon);
2460 if (LocaleNCompare(expression,"exp",3) == 0)
2462 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,beta,
2464 return((MagickRealType) exp((double) alpha));
2466 if (LocaleCompare(expression,"e") == 0)
2467 return((MagickRealType) 2.7182818284590452354);
2473 if (LocaleNCompare(expression,"floor",5) == 0)
2475 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,beta,
2477 return((MagickRealType) floor((double) alpha));
2484 if (LocaleCompare(expression,"g") == 0)
2485 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2491 if (LocaleCompare(expression,"h") == 0)
2492 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2493 if (LocaleCompare(expression,"hue") == 0)
2494 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2495 if (LocaleNCompare(expression,"hypot",5) == 0)
2497 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,beta,
2499 return((MagickRealType) hypot((double) alpha,(double) *beta));
2506 if (LocaleCompare(expression,"k") == 0)
2507 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2513 if (LocaleCompare(expression,"intensity") == 0)
2514 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2515 if (LocaleNCompare(expression,"int",3) == 0)
2517 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,beta,
2519 return((MagickRealType) floor(alpha));
2521 if (LocaleCompare(expression,"i") == 0)
2522 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2528 if (LocaleCompare(expression,"j") == 0)
2529 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2530 #if defined(MAGICKCORE_HAVE_J0)
2531 if (LocaleNCompare(expression,"j0",2) == 0)
2533 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+2,beta,
2535 return((MagickRealType) j0((double) alpha));
2538 #if defined(MAGICKCORE_HAVE_J1)
2539 if (LocaleNCompare(expression,"j1",2) == 0)
2541 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+2,beta,
2543 return((MagickRealType) j1((double) alpha));
2546 #if defined(MAGICKCORE_HAVE_J1)
2547 if (LocaleNCompare(expression,"jinc",4) == 0)
2549 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2553 gamma=(MagickRealType) (2.0*j1((double) (MagickPI*alpha))/
2563 if (LocaleNCompare(expression,"ln",2) == 0)
2565 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+2,beta,
2567 return((MagickRealType) log((double) alpha));
2569 if (LocaleNCompare(expression,"logtwo",6) == 0)
2571 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+6,beta,
2573 return((MagickRealType) log10((double) alpha))/log10(2.0);
2575 if (LocaleNCompare(expression,"log",3) == 0)
2577 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,beta,
2579 return((MagickRealType) log10((double) alpha));
2581 if (LocaleCompare(expression,"lightness") == 0)
2582 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2588 if (LocaleCompare(expression,"MaxRGB") == 0)
2589 return((MagickRealType) QuantumRange);
2590 if (LocaleNCompare(expression,"maxima",6) == 0)
2592 if (LocaleNCompare(expression,"max",3) == 0)
2593 return(FxMax(fx_info,channel,x,y,expression+3,exception));
2594 if (LocaleNCompare(expression,"minima",6) == 0)
2596 if (LocaleNCompare(expression,"min",3) == 0)
2597 return(FxMin(fx_info,channel,x,y,expression+3,exception));
2598 if (LocaleNCompare(expression,"mod",3) == 0)
2600 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,beta,
2602 return((MagickRealType) fmod((double) alpha,(double) *beta));
2604 if (LocaleCompare(expression,"m") == 0)
2605 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2611 if (LocaleCompare(expression,"n") == 0)
2612 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2618 if (LocaleCompare(expression,"Opaque") == 0)
2620 if (LocaleCompare(expression,"o") == 0)
2621 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2627 if (LocaleCompare(expression,"pi") == 0)
2628 return((MagickRealType) MagickPI);
2629 if (LocaleNCompare(expression,"pow",3) == 0)
2631 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,beta,
2633 return((MagickRealType) pow((double) alpha,(double) *beta));
2635 if (LocaleCompare(expression,"p") == 0)
2636 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2642 if (LocaleCompare(expression,"QuantumRange") == 0)
2643 return((MagickRealType) QuantumRange);
2644 if (LocaleCompare(expression,"QuantumScale") == 0)
2645 return((MagickRealType) QuantumScale);
2651 if (LocaleNCompare(expression,"rand",4) == 0)
2652 return((MagickRealType) GetPseudoRandomValue(fx_info->random_info));
2653 if (LocaleNCompare(expression,"round",5) == 0)
2655 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,beta,
2657 return((MagickRealType) floor((double) alpha+0.5));
2659 if (LocaleCompare(expression,"r") == 0)
2660 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2666 if (LocaleCompare(expression,"saturation") == 0)
2667 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2668 if (LocaleNCompare(expression,"sign",4) == 0)
2670 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2672 return(alpha < 0.0 ? -1.0 : 1.0);
2674 if (LocaleNCompare(expression,"sinc",4) == 0)
2676 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2680 gamma=(MagickRealType) (sin((double) (MagickPI*alpha))/
2684 if (LocaleNCompare(expression,"sinh",4) == 0)
2686 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2688 return((MagickRealType) sinh((double) alpha));
2690 if (LocaleNCompare(expression,"sin",3) == 0)
2692 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,beta,
2694 return((MagickRealType) sin((double) alpha));
2696 if (LocaleNCompare(expression,"sqrt",4) == 0)
2698 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2700 return((MagickRealType) sqrt((double) alpha));
2702 if (LocaleCompare(expression,"s") == 0)
2703 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2709 if (LocaleNCompare(expression,"tanh",4) == 0)
2711 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+4,beta,
2713 return((MagickRealType) tanh((double) alpha));
2715 if (LocaleNCompare(expression,"tan",3) == 0)
2717 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+3,beta,
2719 return((MagickRealType) tan((double) alpha));
2721 if (LocaleCompare(expression,"Transparent") == 0)
2723 if (LocaleNCompare(expression,"trunc",5) == 0)
2725 alpha=FxEvaluateSubexpression(fx_info,channel,x,y,expression+5,beta,
2728 return((MagickRealType) floor((double) alpha));
2729 return((MagickRealType) ceil((double) alpha));
2731 if (LocaleCompare(expression,"t") == 0)
2732 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2738 if (LocaleCompare(expression,"u") == 0)
2739 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2745 if (LocaleCompare(expression,"v") == 0)
2746 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2752 if (LocaleCompare(expression,"w") == 0)
2753 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2759 if (LocaleCompare(expression,"y") == 0)
2760 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2766 if (LocaleCompare(expression,"z") == 0)
2767 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2773 q=(char *) expression;
2774 alpha=strtod(expression,&q);
2775 if (q == expression)
2776 return(FxGetSymbol(fx_info,channel,x,y,expression,exception));
2780 MagickExport MagickBooleanType FxEvaluateExpression(FxInfo *fx_info,
2781 MagickRealType *alpha,ExceptionInfo *exception)
2786 status=FxEvaluateChannelExpression(fx_info,GrayChannel,0,0,alpha,exception);
2790 MagickExport MagickBooleanType FxPreprocessExpression(FxInfo *fx_info,
2791 MagickRealType *alpha,ExceptionInfo *exception)
2800 fx_info->file=(FILE *) NULL;
2801 status=FxEvaluateChannelExpression(fx_info,GrayChannel,0,0,alpha,exception);
2806 MagickExport MagickBooleanType FxEvaluateChannelExpression(FxInfo *fx_info,
2807 const ChannelType channel,const ssize_t x,const ssize_t y,
2808 MagickRealType *alpha,ExceptionInfo *exception)
2814 *alpha=FxEvaluateSubexpression(fx_info,channel,x,y,fx_info->expression,&beta,
2816 return(exception->severity == OptionError ? MagickFalse : MagickTrue);
2820 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2828 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2830 % FxImage() applies a mathematical expression to the specified image.
2832 % The format of the FxImage method is:
2834 % Image *FxImage(const Image *image,const char *expression,
2835 % ExceptionInfo *exception)
2836 % Image *FxImageChannel(const Image *image,const ChannelType channel,
2837 % const char *expression,ExceptionInfo *exception)
2839 % A description of each parameter follows:
2841 % o image: the image.
2843 % o channel: the channel.
2845 % o expression: A mathematical expression.
2847 % o exception: return any errors or warnings in this structure.
2851 static FxInfo **DestroyFxThreadSet(FxInfo **fx_info)
2856 assert(fx_info != (FxInfo **) NULL);
2857 for (i=0; i < (ssize_t) GetOpenMPMaximumThreads(); i++)
2858 if (fx_info[i] != (FxInfo *) NULL)
2859 fx_info[i]=DestroyFxInfo(fx_info[i]);
2860 fx_info=(FxInfo **) RelinquishMagickMemory(fx_info);
2864 static FxInfo **AcquireFxThreadSet(const Image *image,const char *expression,
2865 ExceptionInfo *exception)
2882 number_threads=GetOpenMPMaximumThreads();
2883 fx_info=(FxInfo **) AcquireQuantumMemory(number_threads,sizeof(*fx_info));
2884 if (fx_info == (FxInfo **) NULL)
2885 return((FxInfo **) NULL);
2886 (void) ResetMagickMemory(fx_info,0,number_threads*sizeof(*fx_info));
2887 if (*expression != '@')
2888 fx_expression=ConstantString(expression);
2890 fx_expression=FileToString(expression+1,~0,exception);
2891 for (i=0; i < (ssize_t) number_threads; i++)
2893 fx_info[i]=AcquireFxInfo(image,fx_expression);
2894 if (fx_info[i] == (FxInfo *) NULL)
2895 return(DestroyFxThreadSet(fx_info));
2896 (void) FxPreprocessExpression(fx_info[i],&alpha,fx_info[i]->exception);
2898 fx_expression=DestroyString(fx_expression);
2902 MagickExport Image *FxImage(const Image *image,const char *expression,
2903 ExceptionInfo *exception)
2908 fx_image=FxImageChannel(image,GrayChannel,expression,exception);
2912 MagickExport Image *FxImageChannel(const Image *image,const ChannelType channel,
2913 const char *expression,ExceptionInfo *exception)
2915 #define FxImageTag "Fx/Image"
2938 assert(image != (Image *) NULL);
2939 assert(image->signature == MagickSignature);
2940 if (image->debug != MagickFalse)
2941 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2942 fx_image=CloneImage(image,0,0,MagickTrue,exception);
2943 if (fx_image == (Image *) NULL)
2944 return((Image *) NULL);
2945 if (SetImageStorageClass(fx_image,DirectClass) == MagickFalse)
2947 InheritException(exception,&fx_image->exception);
2948 fx_image=DestroyImage(fx_image);
2949 return((Image *) NULL);
2951 fx_info=AcquireFxThreadSet(image,expression,exception);
2952 if (fx_info == (FxInfo **) NULL)
2954 fx_image=DestroyImage(fx_image);
2955 ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
2957 status=FxPreprocessExpression(fx_info[0],&alpha,exception);
2958 if (status == MagickFalse)
2960 fx_image=DestroyImage(fx_image);
2961 fx_info=DestroyFxThreadSet(fx_info);
2962 return((Image *) NULL);
2969 fx_view=AcquireCacheView(fx_image);
2970 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2971 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
2973 for (y=0; y < (ssize_t) fx_image->rows; y++)
2976 id = GetOpenMPThreadId();
2981 register IndexPacket
2982 *restrict fx_indexes;
2987 register PixelPacket
2990 if (status == MagickFalse)
2992 q=GetCacheViewAuthenticPixels(fx_view,0,y,fx_image->columns,1,exception);
2993 if (q == (PixelPacket *) NULL)
2998 fx_indexes=GetCacheViewAuthenticIndexQueue(fx_view);
3000 for (x=0; x < (ssize_t) fx_image->columns; x++)
3002 if ((channel & RedChannel) != 0)
3004 (void) FxEvaluateChannelExpression(fx_info[id],RedChannel,x,y,
3006 q->red=ClampToQuantum((MagickRealType) QuantumRange*alpha);
3008 if ((channel & GreenChannel) != 0)
3010 (void) FxEvaluateChannelExpression(fx_info[id],GreenChannel,x,y,
3012 q->green=ClampToQuantum((MagickRealType) QuantumRange*alpha);
3014 if ((channel & BlueChannel) != 0)
3016 (void) FxEvaluateChannelExpression(fx_info[id],BlueChannel,x,y,
3018 q->blue=ClampToQuantum((MagickRealType) QuantumRange*alpha);
3020 if ((channel & OpacityChannel) != 0)
3022 (void) FxEvaluateChannelExpression(fx_info[id],OpacityChannel,x,y,
3024 if (image->matte == MagickFalse)
3025 q->opacity=ClampToQuantum((MagickRealType) QuantumRange*alpha);
3027 q->opacity=ClampToQuantum((MagickRealType) (QuantumRange-
3028 QuantumRange*alpha));
3030 if (((channel & IndexChannel) != 0) &&
3031 (fx_image->colorspace == CMYKColorspace))
3033 (void) FxEvaluateChannelExpression(fx_info[id],IndexChannel,x,y,
3035 fx_indexes[x]=(IndexPacket) ClampToQuantum((MagickRealType)
3036 QuantumRange*alpha);
3040 if (SyncCacheViewAuthenticPixels(fx_view,exception) == MagickFalse)
3042 if (image->progress_monitor != (MagickProgressMonitor) NULL)
3047 #if defined(MAGICKCORE_OPENMP_SUPPORT)
3048 #pragma omp critical (MagickCore_FxImageChannel)
3050 proceed=SetImageProgress(image,FxImageTag,progress++,image->rows);
3051 if (proceed == MagickFalse)
3055 fx_image->matte=fx_info[0]->matte;
3056 fx_view=DestroyCacheView(fx_view);
3057 fx_info=DestroyFxThreadSet(fx_info);
3058 if (status == MagickFalse)
3059 fx_image=DestroyImage(fx_image);
3064 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3068 % I m p l o d e I m a g e %
3072 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3074 % ImplodeImage() creates a new image that is a copy of an existing
3075 % one with the image pixels "implode" by the specified percentage. It
3076 % allocates the memory necessary for the new Image structure and returns a
3077 % pointer to the new image.
3079 % The format of the ImplodeImage method is:
3081 % Image *ImplodeImage(const Image *image,const double amount,
3082 % ExceptionInfo *exception)
3084 % A description of each parameter follows:
3086 % o implode_image: Method ImplodeImage returns a pointer to the image
3087 % after it is implode. A null image is returned if there is a memory
3090 % o image: the image.
3092 % o amount: Define the extent of the implosion.
3094 % o exception: return any errors or warnings in this structure.
3097 MagickExport Image *ImplodeImage(const Image *image,const double amount,
3098 ExceptionInfo *exception)
3100 #define ImplodeImageTag "Implode/Image"
3126 **restrict resample_filter;
3132 Initialize implode image attributes.
3134 assert(image != (Image *) NULL);
3135 assert(image->signature == MagickSignature);
3136 if (image->debug != MagickFalse)
3137 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
3138 assert(exception != (ExceptionInfo *) NULL);
3139 assert(exception->signature == MagickSignature);
3140 implode_image=CloneImage(image,0,0,MagickTrue,exception);
3141 if (implode_image == (Image *) NULL)
3142 return((Image *) NULL);
3143 if (SetImageStorageClass(implode_image,DirectClass) == MagickFalse)
3145 InheritException(exception,&implode_image->exception);
3146 implode_image=DestroyImage(implode_image);
3147 return((Image *) NULL);
3149 if (implode_image->background_color.opacity != OpaqueOpacity)
3150 implode_image->matte=MagickTrue;
3152 Compute scaling factor.
3156 center.x=0.5*image->columns;
3157 center.y=0.5*image->rows;
3159 if (image->columns > image->rows)
3160 scale.y=(double) image->columns/(double) image->rows;
3162 if (image->columns < image->rows)
3164 scale.x=(double) image->rows/(double) image->columns;
3172 GetMagickPixelPacket(implode_image,&zero);
3173 resample_filter=AcquireResampleFilterThreadSet(image,
3174 UndefinedVirtualPixelMethod,MagickTrue,exception);
3175 image_view=AcquireCacheView(image);
3176 implode_view=AcquireCacheView(implode_image);
3177 #if defined(MAGICKCORE_OPENMP_SUPPORT)
3178 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
3180 for (y=0; y < (ssize_t) image->rows; y++)
3183 id = GetOpenMPThreadId();
3194 register IndexPacket
3195 *restrict implode_indexes;
3200 register PixelPacket
3203 if (status == MagickFalse)
3205 q=GetCacheViewAuthenticPixels(implode_view,0,y,implode_image->columns,1,
3207 if (q == (PixelPacket *) NULL)
3212 implode_indexes=GetCacheViewAuthenticIndexQueue(implode_view);
3213 delta.y=scale.y*(double) (y-center.y);
3215 for (x=0; x < (ssize_t) image->columns; x++)
3218 Determine if the pixel is within an ellipse.
3220 delta.x=scale.x*(double) (x-center.x);
3221 distance=delta.x*delta.x+delta.y*delta.y;
3222 if (distance < (radius*radius))
3232 factor=pow(sin((double) (MagickPI*sqrt((double) distance)/
3233 radius/2)),-amount);
3234 (void) ResamplePixelColor(resample_filter[id],(double)
3235 (factor*delta.x/scale.x+center.x),(double) (factor*delta.y/
3236 scale.y+center.y),&pixel);
3237 SetPixelPacket(implode_image,&pixel,q,implode_indexes+x);
3241 if (SyncCacheViewAuthenticPixels(implode_view,exception) == MagickFalse)
3243 if (image->progress_monitor != (MagickProgressMonitor) NULL)
3248 #if defined(MAGICKCORE_OPENMP_SUPPORT)
3249 #pragma omp critical (MagickCore_ImplodeImage)
3251 proceed=SetImageProgress(image,ImplodeImageTag,progress++,image->rows);
3252 if (proceed == MagickFalse)
3256 implode_view=DestroyCacheView(implode_view);
3257 image_view=DestroyCacheView(image_view);
3258 resample_filter=DestroyResampleFilterThreadSet(resample_filter);
3259 if (status == MagickFalse)
3260 implode_image=DestroyImage(implode_image);
3261 return(implode_image);
3265 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3269 % M o r p h I m a g e s %
3273 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3275 % The MorphImages() method requires a minimum of two images. The first
3276 % image is transformed into the second by a number of intervening images
3277 % as specified by frames.
3279 % The format of the MorphImage method is:
3281 % Image *MorphImages(const Image *image,const size_t number_frames,
3282 % ExceptionInfo *exception)
3284 % A description of each parameter follows:
3286 % o image: the image.
3288 % o number_frames: Define the number of in-between image to generate.
3289 % The more in-between frames, the smoother the morph.
3291 % o exception: return any errors or warnings in this structure.
3294 MagickExport Image *MorphImages(const Image *image,
3295 const size_t number_frames,ExceptionInfo *exception)
3297 #define MorphImageTag "Morph/Image"
3313 register const Image
3323 Clone first frame in sequence.
3325 assert(image != (Image *) NULL);
3326 assert(image->signature == MagickSignature);
3327 if (image->debug != MagickFalse)
3328 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
3329 assert(exception != (ExceptionInfo *) NULL);
3330 assert(exception->signature == MagickSignature);
3331 morph_images=CloneImage(image,0,0,MagickTrue,exception);
3332 if (morph_images == (Image *) NULL)
3333 return((Image *) NULL);
3334 if (GetNextImageInList(image) == (Image *) NULL)
3339 for (i=1; i < (ssize_t) number_frames; i++)
3341 morph_image=CloneImage(image,0,0,MagickTrue,exception);
3342 if (morph_image == (Image *) NULL)
3344 morph_images=DestroyImageList(morph_images);
3345 return((Image *) NULL);
3347 AppendImageToList(&morph_images,morph_image);
3348 if (image->progress_monitor != (MagickProgressMonitor) NULL)
3353 proceed=SetImageProgress(image,MorphImageTag,(MagickOffsetType) i,
3355 if (proceed == MagickFalse)
3359 return(GetFirstImageInList(morph_images));
3362 Morph image sequence.
3367 for ( ; GetNextImageInList(next) != (Image *) NULL; next=GetNextImageInList(next))
3369 for (i=0; i < (ssize_t) number_frames; i++)
3375 beta=(MagickRealType) (i+1.0)/(MagickRealType) (number_frames+1.0);
3377 morph_image=ResizeImage(next,(size_t) (alpha*next->columns+beta*
3378 GetNextImageInList(next)->columns+0.5),(size_t) (alpha*
3379 next->rows+beta*GetNextImageInList(next)->rows+0.5),
3380 next->filter,next->blur,exception);
3381 if (morph_image == (Image *) NULL)
3383 morph_images=DestroyImageList(morph_images);
3384 return((Image *) NULL);
3386 if (SetImageStorageClass(morph_image,DirectClass) == MagickFalse)
3388 InheritException(exception,&morph_image->exception);
3389 morph_image=DestroyImage(morph_image);
3390 return((Image *) NULL);
3392 AppendImageToList(&morph_images,morph_image);
3393 morph_images=GetLastImageInList(morph_images);
3394 morph_image=ResizeImage(GetNextImageInList(next),morph_images->columns,
3395 morph_images->rows,GetNextImageInList(next)->filter,
3396 GetNextImageInList(next)->blur,exception);
3397 if (morph_image == (Image *) NULL)
3399 morph_images=DestroyImageList(morph_images);
3400 return((Image *) NULL);
3402 image_view=AcquireCacheView(morph_image);
3403 morph_view=AcquireCacheView(morph_images);
3404 #if defined(MAGICKCORE_OPENMP_SUPPORT)
3405 #pragma omp parallel for schedule(dynamic,4) shared(status)
3407 for (y=0; y < (ssize_t) morph_images->rows; y++)
3412 register const PixelPacket
3418 register PixelPacket
3421 if (status == MagickFalse)
3423 p=GetCacheViewVirtualPixels(image_view,0,y,morph_image->columns,1,
3425 q=GetCacheViewAuthenticPixels(morph_view,0,y,morph_images->columns,1,
3427 if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
3432 for (x=0; x < (ssize_t) morph_images->columns; x++)
3434 q->red=ClampToQuantum(alpha*q->red+beta*GetRedPixelComponent(p));
3435 q->green=ClampToQuantum(alpha*q->green+beta*
3436 GetGreenPixelComponent(p));
3437 q->blue=ClampToQuantum(alpha*q->blue+beta*GetBluePixelComponent(p));
3438 q->opacity=ClampToQuantum(alpha*q->opacity+beta*
3439 GetOpacityPixelComponent(p));
3443 sync=SyncCacheViewAuthenticPixels(morph_view,exception);
3444 if (sync == MagickFalse)
3447 morph_view=DestroyCacheView(morph_view);
3448 image_view=DestroyCacheView(image_view);
3449 morph_image=DestroyImage(morph_image);
3451 if (i < (ssize_t) number_frames)
3454 Clone last frame in sequence.
3456 morph_image=CloneImage(GetNextImageInList(next),0,0,MagickTrue,exception);
3457 if (morph_image == (Image *) NULL)
3459 morph_images=DestroyImageList(morph_images);
3460 return((Image *) NULL);
3462 AppendImageToList(&morph_images,morph_image);
3463 morph_images=GetLastImageInList(morph_images);
3464 if (image->progress_monitor != (MagickProgressMonitor) NULL)
3469 #if defined(MAGICKCORE_OPENMP_SUPPORT)
3470 #pragma omp critical (MagickCore_MorphImages)
3472 proceed=SetImageProgress(image,MorphImageTag,scene,
3473 GetImageListLength(image));
3474 if (proceed == MagickFalse)
3479 if (GetNextImageInList(next) != (Image *) NULL)
3481 morph_images=DestroyImageList(morph_images);
3482 return((Image *) NULL);
3484 return(GetFirstImageInList(morph_images));
3488 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3492 % P l a s m a I m a g e %
3496 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3498 % PlasmaImage() initializes an image with plasma fractal values. The image
3499 % must be initialized with a base color and the random number generator
3500 % seeded before this method is called.
3502 % The format of the PlasmaImage method is:
3504 % MagickBooleanType PlasmaImage(Image *image,const SegmentInfo *segment,
3505 % size_t attenuate,size_t depth)
3507 % A description of each parameter follows:
3509 % o image: the image.
3511 % o segment: Define the region to apply plasma fractals values.
3513 % o attenuate: Define the plasma attenuation factor.
3515 % o depth: Limit the plasma recursion depth.
3519 static inline Quantum PlasmaPixel(RandomInfo *random_info,
3520 const MagickRealType pixel,const MagickRealType noise)
3525 plasma=ClampToQuantum(pixel+noise*GetPseudoRandomValue(random_info)-
3530 MagickExport MagickBooleanType PlasmaImageProxy(Image *image,
3531 CacheView *image_view,RandomInfo *random_info,const SegmentInfo *segment,
3532 size_t attenuate,size_t depth)
3550 if (((segment->x2-segment->x1) == 0.0) && ((segment->y2-segment->y1) == 0.0))
3558 Divide the area into quadrants and recurse.
3562 x_mid=(ssize_t) ceil((segment->x1+segment->x2)/2-0.5);
3563 y_mid=(ssize_t) ceil((segment->y1+segment->y2)/2-0.5);
3564 local_info=(*segment);
3565 local_info.x2=(double) x_mid;
3566 local_info.y2=(double) y_mid;
3567 (void) PlasmaImageProxy(image,image_view,random_info,&local_info,
3569 local_info=(*segment);
3570 local_info.y1=(double) y_mid;
3571 local_info.x2=(double) x_mid;
3572 (void) PlasmaImageProxy(image,image_view,random_info,&local_info,
3574 local_info=(*segment);
3575 local_info.x1=(double) x_mid;
3576 local_info.y2=(double) y_mid;
3577 (void) PlasmaImageProxy(image,image_view,random_info,&local_info,
3579 local_info=(*segment);
3580 local_info.x1=(double) x_mid;
3581 local_info.y1=(double) y_mid;
3582 return(PlasmaImageProxy(image,image_view,random_info,&local_info,
3585 x_mid=(ssize_t) ceil((segment->x1+segment->x2)/2-0.5);
3586 y_mid=(ssize_t) ceil((segment->y1+segment->y2)/2-0.5);
3587 if ((segment->x1 == (double) x_mid) && (segment->x2 == (double) x_mid) &&
3588 (segment->y1 == (double) y_mid) && (segment->y2 == (double) y_mid))
3589 return(MagickFalse);
3591 Average pixels and apply plasma.
3593 exception=(&image->exception);
3594 plasma=(MagickRealType) QuantumRange/(2.0*attenuate);
3595 if ((segment->x1 != (double) x_mid) || (segment->x2 != (double) x_mid))
3597 register PixelPacket
3603 x=(ssize_t) ceil(segment->x1-0.5);
3604 (void) GetOneCacheViewVirtualPixel(image_view,x,(ssize_t)
3605 ceil(segment->y1-0.5),&u,exception);
3606 (void) GetOneCacheViewVirtualPixel(image_view,x,(ssize_t)
3607 ceil(segment->y2-0.5),&v,exception);
3608 q=QueueCacheViewAuthenticPixels(image_view,x,y_mid,1,1,exception);
3609 if (q == (PixelPacket *) NULL)
3611 q->red=PlasmaPixel(random_info,(MagickRealType) (u.red+v.red)/2.0,
3613 q->green=PlasmaPixel(random_info,(MagickRealType) (u.green+v.green)/2.0,
3615 q->blue=PlasmaPixel(random_info,(MagickRealType) (u.blue+v.blue)/2.0,
3617 (void) SyncCacheViewAuthenticPixels(image_view,exception);
3618 if (segment->x1 != segment->x2)
3623 x=(ssize_t) ceil(segment->x2-0.5);
3624 (void) GetOneCacheViewVirtualPixel(image_view,x,(ssize_t)
3625 ceil(segment->y1-0.5),&u,exception);
3626 (void) GetOneCacheViewVirtualPixel(image_view,x,(ssize_t)
3627 ceil(segment->y2-0.5),&v,exception);
3628 q=QueueCacheViewAuthenticPixels(image_view,x,y_mid,1,1,exception);
3629 if (q == (PixelPacket *) NULL)
3631 q->red=PlasmaPixel(random_info,(MagickRealType) (u.red+v.red)/2.0,
3633 q->green=PlasmaPixel(random_info,(MagickRealType) (u.green+v.green)/
3635 q->blue=PlasmaPixel(random_info,(MagickRealType) (u.blue+v.blue)/2.0,
3637 (void) SyncCacheViewAuthenticPixels(image_view,exception);
3640 if ((segment->y1 != (double) y_mid) || (segment->y2 != (double) y_mid))
3642 if ((segment->x1 != (double) x_mid) || (segment->y2 != (double) y_mid))
3644 register PixelPacket
3650 y=(ssize_t) ceil(segment->y2-0.5);
3651 (void) GetOneCacheViewVirtualPixel(image_view,(ssize_t)
3652 ceil(segment->x1-0.5),y,&u,exception);
3653 (void) GetOneCacheViewVirtualPixel(image_view,(ssize_t)
3654 ceil(segment->x2-0.5),y,&v,exception);
3655 q=QueueCacheViewAuthenticPixels(image_view,x_mid,y,1,1,exception);
3656 if (q == (PixelPacket *) NULL)
3658 q->red=PlasmaPixel(random_info,(MagickRealType) (u.red+v.red)/2.0,
3660 q->green=PlasmaPixel(random_info,(MagickRealType) (u.green+v.green)/
3662 q->blue=PlasmaPixel(random_info,(MagickRealType) (u.blue+v.blue)/2.0,
3664 (void) SyncCacheViewAuthenticPixels(image_view,exception);
3666 if (segment->y1 != segment->y2)
3668 register PixelPacket
3674 y=(ssize_t) ceil(segment->y1-0.5);
3675 (void) GetOneCacheViewVirtualPixel(image_view,(ssize_t)
3676 ceil(segment->x1-0.5),y,&u,exception);
3677 (void) GetOneCacheViewVirtualPixel(image_view,(ssize_t)
3678 ceil(segment->x2-0.5),y,&v,exception);
3679 q=QueueCacheViewAuthenticPixels(image_view,x_mid,y,1,1,exception);
3680 if (q == (PixelPacket *) NULL)
3682 q->red=PlasmaPixel(random_info,(MagickRealType) (u.red+v.red)/2.0,
3684 q->green=PlasmaPixel(random_info,(MagickRealType) (u.green+v.green)/
3686 q->blue=PlasmaPixel(random_info,(MagickRealType) (u.blue+v.blue)/2.0,
3688 (void) SyncCacheViewAuthenticPixels(image_view,exception);
3691 if ((segment->x1 != segment->x2) || (segment->y1 != segment->y2))
3693 register PixelPacket
3699 x=(ssize_t) ceil(segment->x1-0.5);
3700 y=(ssize_t) ceil(segment->y1-0.5);
3701 (void) GetOneVirtualPixel(image,x,y,&u,exception);
3702 x=(ssize_t) ceil(segment->x2-0.5);
3703 y=(ssize_t) ceil(segment->y2-0.5);
3704 (void) GetOneCacheViewVirtualPixel(image_view,x,y,&v,exception);
3705 q=QueueCacheViewAuthenticPixels(image_view,x_mid,y_mid,1,1,exception);
3706 if (q == (PixelPacket *) NULL)
3708 q->red=PlasmaPixel(random_info,(MagickRealType) (u.red+v.red)/2.0,
3710 q->green=PlasmaPixel(random_info,(MagickRealType) (u.green+v.green)/2.0,
3712 q->blue=PlasmaPixel(random_info,(MagickRealType) (u.blue+v.blue)/2.0,
3714 (void) SyncCacheViewAuthenticPixels(image_view,exception);
3716 if (((segment->x2-segment->x1) < 3.0) && ((segment->y2-segment->y1) < 3.0))
3718 return(MagickFalse);
3721 MagickExport MagickBooleanType PlasmaImage(Image *image,
3722 const SegmentInfo *segment,size_t attenuate,size_t depth)
3733 if (image->debug != MagickFalse)
3734 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
3735 assert(image != (Image *) NULL);
3736 assert(image->signature == MagickSignature);
3737 if (image->debug != MagickFalse)
3738 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
3739 if (SetImageStorageClass(image,DirectClass) == MagickFalse)
3740 return(MagickFalse);
3741 image_view=AcquireCacheView(image);
3742 random_info=AcquireRandomInfo();
3743 status=PlasmaImageProxy(image,image_view,random_info,segment,attenuate,depth);
3744 random_info=DestroyRandomInfo(random_info);
3745 image_view=DestroyCacheView(image_view);
3750 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3754 % P o l a r o i d I m a g e %
3758 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3760 % PolaroidImage() simulates a Polaroid picture.
3762 % The format of the AnnotateImage method is:
3764 % Image *PolaroidImage(const Image *image,const DrawInfo *draw_info,
3765 % const double angle,ExceptionInfo exception)
3767 % A description of each parameter follows:
3769 % o image: the image.
3771 % o draw_info: the draw info.
3773 % o angle: Apply the effect along this angle.
3775 % o exception: return any errors or warnings in this structure.
3778 MagickExport Image *PolaroidImage(const Image *image,const DrawInfo *draw_info,
3779 const double angle,ExceptionInfo *exception)
3800 Simulate a Polaroid picture.
3802 assert(image != (Image *) NULL);
3803 assert(image->signature == MagickSignature);
3804 if (image->debug != MagickFalse)
3805 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
3806 assert(exception != (ExceptionInfo *) NULL);
3807 assert(exception->signature == MagickSignature);
3808 quantum=(ssize_t) MagickMax(MagickMax((double) image->columns,(double)
3809 image->rows)/25.0,10.0);
3810 height=image->rows+2*quantum;
3811 caption_image=(Image *) NULL;
3812 value=GetImageProperty(image,"Caption");
3813 if (value != (const char *) NULL)
3817 geometry[MaxTextExtent];
3832 Generate caption image.
3834 caption_image=CloneImage(image,image->columns,1,MagickTrue,exception);
3835 if (caption_image == (Image *) NULL)
3836 return((Image *) NULL);
3837 annotate_info=CloneDrawInfo((const ImageInfo *) NULL,draw_info);
3838 caption=InterpretImageProperties((ImageInfo *) NULL,(Image *) image,
3840 (void) CloneString(&annotate_info->text,caption);
3841 count=FormatMagickCaption(caption_image,annotate_info,MagickTrue,&metrics,
3843 status=SetImageExtent(caption_image,image->columns,(size_t)
3844 ((count+1)*(metrics.ascent-metrics.descent)+0.5));
3845 if (status == MagickFalse)
3846 caption_image=DestroyImage(caption_image);
3849 caption_image->background_color=image->border_color;
3850 (void) SetImageBackgroundColor(caption_image);
3851 (void) CloneString(&annotate_info->text,caption);
3852 (void) FormatMagickString(geometry,MaxTextExtent,"+0+%g",
3854 if (annotate_info->gravity == UndefinedGravity)
3855 (void) CloneString(&annotate_info->geometry,AcquireString(
3857 (void) AnnotateImage(caption_image,annotate_info);
3858 height+=caption_image->rows;
3860 annotate_info=DestroyDrawInfo(annotate_info);
3861 caption=DestroyString(caption);
3863 picture_image=CloneImage(image,image->columns+2*quantum,height,MagickTrue,
3865 if (picture_image == (Image *) NULL)
3867 if (caption_image != (Image *) NULL)
3868 caption_image=DestroyImage(caption_image);
3869 return((Image *) NULL);
3871 picture_image->background_color=image->border_color;
3872 (void) SetImageBackgroundColor(picture_image);
3873 (void) CompositeImage(picture_image,OverCompositeOp,image,quantum,quantum);
3874 if (caption_image != (Image *) NULL)
3876 (void) CompositeImage(picture_image,OverCompositeOp,caption_image,
3877 quantum,(ssize_t) (image->rows+3*quantum/2));
3878 caption_image=DestroyImage(caption_image);
3880 (void) QueryColorDatabase("none",&picture_image->background_color,exception);
3881 (void) SetImageAlphaChannel(picture_image,OpaqueAlphaChannel);
3882 rotate_image=RotateImage(picture_image,90.0,exception);
3883 picture_image=DestroyImage(picture_image);
3884 if (rotate_image == (Image *) NULL)
3885 return((Image *) NULL);
3886 picture_image=rotate_image;
3887 bend_image=WaveImage(picture_image,0.01*picture_image->rows,2.0*
3888 picture_image->columns,exception);
3889 picture_image=DestroyImage(picture_image);
3890 if (bend_image == (Image *) NULL)
3891 return((Image *) NULL);
3892 InheritException(&bend_image->exception,exception);
3893 picture_image=bend_image;
3894 rotate_image=RotateImage(picture_image,-90.0,exception);
3895 picture_image=DestroyImage(picture_image);
3896 if (rotate_image == (Image *) NULL)
3897 return((Image *) NULL);
3898 picture_image=rotate_image;
3899 picture_image->background_color=image->background_color;
3900 polaroid_image=ShadowImage(picture_image,80.0,2.0,quantum/3,quantum/3,
3902 if (polaroid_image == (Image *) NULL)
3904 picture_image=DestroyImage(picture_image);
3905 return(picture_image);
3907 flop_image=FlopImage(polaroid_image,exception);
3908 polaroid_image=DestroyImage(polaroid_image);
3909 if (flop_image == (Image *) NULL)
3911 picture_image=DestroyImage(picture_image);
3912 return(picture_image);
3914 polaroid_image=flop_image;
3915 (void) CompositeImage(polaroid_image,OverCompositeOp,picture_image,
3916 (ssize_t) (-0.01*picture_image->columns/2.0),0L);
3917 picture_image=DestroyImage(picture_image);
3918 (void) QueryColorDatabase("none",&polaroid_image->background_color,exception);
3919 rotate_image=RotateImage(polaroid_image,angle,exception);
3920 polaroid_image=DestroyImage(polaroid_image);
3921 if (rotate_image == (Image *) NULL)
3922 return((Image *) NULL);
3923 polaroid_image=rotate_image;
3924 trim_image=TrimImage(polaroid_image,exception);
3925 polaroid_image=DestroyImage(polaroid_image);
3926 if (trim_image == (Image *) NULL)
3927 return((Image *) NULL);
3928 polaroid_image=trim_image;
3929 return(polaroid_image);
3933 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3937 % S e p i a T o n e I m a g e %
3941 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3943 % MagickSepiaToneImage() applies a special effect to the image, similar to the
3944 % effect achieved in a photo darkroom by sepia toning. Threshold ranges from
3945 % 0 to QuantumRange and is a measure of the extent of the sepia toning. A
3946 % threshold of 80% is a good starting point for a reasonable tone.
3948 % The format of the SepiaToneImage method is:
3950 % Image *SepiaToneImage(const Image *image,const double threshold,
3951 % ExceptionInfo *exception)
3953 % A description of each parameter follows:
3955 % o image: the image.
3957 % o threshold: the tone threshold.
3959 % o exception: return any errors or warnings in this structure.
3962 MagickExport Image *SepiaToneImage(const Image *image,const double threshold,
3963 ExceptionInfo *exception)
3965 #define SepiaToneImageTag "SepiaTone/Image"
3984 Initialize sepia-toned image attributes.
3986 assert(image != (const Image *) NULL);
3987 assert(image->signature == MagickSignature);
3988 if (image->debug != MagickFalse)
3989 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
3990 assert(exception != (ExceptionInfo *) NULL);
3991 assert(exception->signature == MagickSignature);
3992 sepia_image=CloneImage(image,image->columns,image->rows,MagickTrue,exception);
3993 if (sepia_image == (Image *) NULL)
3994 return((Image *) NULL);
3995 if (SetImageStorageClass(sepia_image,DirectClass) == MagickFalse)
3997 InheritException(exception,&sepia_image->exception);
3998 sepia_image=DestroyImage(sepia_image);
3999 return((Image *) NULL);
4002 Tone each row of the image.
4006 image_view=AcquireCacheView(image);
4007 sepia_view=AcquireCacheView(sepia_image);
4008 #if defined(MAGICKCORE_OPENMP_SUPPORT)
4009 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
4011 for (y=0; y < (ssize_t) image->rows; y++)
4013 register const PixelPacket
4019 register PixelPacket
4022 if (status == MagickFalse)
4024 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
4025 q=QueueCacheViewAuthenticPixels(sepia_view,0,y,sepia_image->columns,1,
4027 if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
4032 for (x=0; x < (ssize_t) image->columns; x++)
4038 intensity=(MagickRealType) PixelIntensityToQuantum(p);
4039 tone=intensity > threshold ? (MagickRealType) QuantumRange : intensity+
4040 (MagickRealType) QuantumRange-threshold;
4041 q->red=ClampToQuantum(tone);
4042 tone=intensity > (7.0*threshold/6.0) ? (MagickRealType) QuantumRange :
4043 intensity+(MagickRealType) QuantumRange-7.0*threshold/6.0;
4044 q->green=ClampToQuantum(tone);
4045 tone=intensity < (threshold/6.0) ? 0 : intensity-threshold/6.0;
4046 q->blue=ClampToQuantum(tone);
4048 if ((MagickRealType) q->green < tone)
4049 q->green=ClampToQuantum(tone);
4050 if ((MagickRealType) q->blue < tone)
4051 q->blue=ClampToQuantum(tone);
4055 if (SyncCacheViewAuthenticPixels(sepia_view,exception) == MagickFalse)
4057 if (image->progress_monitor != (MagickProgressMonitor) NULL)
4062 #if defined(MAGICKCORE_OPENMP_SUPPORT)
4063 #pragma omp critical (MagickCore_SepiaToneImage)
4065 proceed=SetImageProgress(image,SepiaToneImageTag,progress++,
4067 if (proceed == MagickFalse)
4071 sepia_view=DestroyCacheView(sepia_view);
4072 image_view=DestroyCacheView(image_view);
4073 (void) NormalizeImage(sepia_image);
4074 (void) ContrastImage(sepia_image,MagickTrue);
4075 if (status == MagickFalse)
4076 sepia_image=DestroyImage(sepia_image);
4077 return(sepia_image);
4081 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4085 % S h a d o w I m a g e %
4089 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4091 % ShadowImage() simulates a shadow from the specified image and returns it.
4093 % The format of the ShadowImage method is:
4095 % Image *ShadowImage(const Image *image,const double opacity,
4096 % const double sigma,const ssize_t x_offset,const ssize_t y_offset,
4097 % ExceptionInfo *exception)
4099 % A description of each parameter follows:
4101 % o image: the image.
4103 % o opacity: percentage transparency.
4105 % o sigma: the standard deviation of the Gaussian, in pixels.
4107 % o x_offset: the shadow x-offset.
4109 % o y_offset: the shadow y-offset.
4111 % o exception: return any errors or warnings in this structure.
4114 MagickExport Image *ShadowImage(const Image *image,const double opacity,
4115 const double sigma,const ssize_t x_offset,const ssize_t y_offset,
4116 ExceptionInfo *exception)
4118 #define ShadowImageTag "Shadow/Image"
4140 assert(image != (Image *) NULL);
4141 assert(image->signature == MagickSignature);
4142 if (image->debug != MagickFalse)
4143 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4144 assert(exception != (ExceptionInfo *) NULL);
4145 assert(exception->signature == MagickSignature);
4146 clone_image=CloneImage(image,0,0,MagickTrue,exception);
4147 if (clone_image == (Image *) NULL)
4148 return((Image *) NULL);
4149 (void) SetImageVirtualPixelMethod(clone_image,EdgeVirtualPixelMethod);
4150 clone_image->compose=OverCompositeOp;
4151 border_info.width=(size_t) floor(2.0*sigma+0.5);
4152 border_info.height=(size_t) floor(2.0*sigma+0.5);
4155 (void) QueryColorDatabase("none",&clone_image->border_color,exception);
4156 border_image=BorderImage(clone_image,&border_info,exception);
4157 clone_image=DestroyImage(clone_image);
4158 if (border_image == (Image *) NULL)
4159 return((Image *) NULL);
4160 if (border_image->matte == MagickFalse)
4161 (void) SetImageAlphaChannel(border_image,OpaqueAlphaChannel);
4167 image_view=AcquireCacheView(border_image);
4168 #if defined(MAGICKCORE_OPENMP_SUPPORT)
4169 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
4171 for (y=0; y < (ssize_t) border_image->rows; y++)
4176 register PixelPacket
4179 if (status == MagickFalse)
4181 q=GetCacheViewAuthenticPixels(image_view,0,y,border_image->columns,1,
4183 if (q == (PixelPacket *) NULL)
4188 for (x=0; x < (ssize_t) border_image->columns; x++)
4190 q->red=border_image->background_color.red;
4191 q->green=border_image->background_color.green;
4192 q->blue=border_image->background_color.blue;
4193 if (border_image->matte == MagickFalse)
4194 q->opacity=border_image->background_color.opacity;
4196 q->opacity=ClampToQuantum((MagickRealType) (QuantumRange-
4197 GetAlphaPixelComponent(q)*opacity/100.0));
4200 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
4202 if (image->progress_monitor != (MagickProgressMonitor) NULL)
4207 #if defined(MAGICKCORE_OPENMP_SUPPORT)
4208 #pragma omp critical (MagickCore_ShadowImage)
4210 proceed=SetImageProgress(image,ShadowImageTag,progress++,
4211 border_image->rows);
4212 if (proceed == MagickFalse)
4216 image_view=DestroyCacheView(image_view);
4217 shadow_image=BlurImageChannel(border_image,AlphaChannel,0.0,sigma,exception);
4218 border_image=DestroyImage(border_image);
4219 if (shadow_image == (Image *) NULL)
4220 return((Image *) NULL);
4221 if (shadow_image->page.width == 0)
4222 shadow_image->page.width=shadow_image->columns;
4223 if (shadow_image->page.height == 0)
4224 shadow_image->page.height=shadow_image->rows;
4225 shadow_image->page.width+=x_offset-(ssize_t) border_info.width;
4226 shadow_image->page.height+=y_offset-(ssize_t) border_info.height;
4227 shadow_image->page.x+=x_offset-(ssize_t) border_info.width;
4228 shadow_image->page.y+=y_offset-(ssize_t) border_info.height;
4229 return(shadow_image);
4233 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4237 % S k e t c h I m a g e %
4241 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4243 % SketchImage() simulates a pencil sketch. We convolve the image with a
4244 % Gaussian operator of the given radius and standard deviation (sigma). For
4245 % reasonable results, radius should be larger than sigma. Use a radius of 0
4246 % and SketchImage() selects a suitable radius for you. Angle gives the angle
4249 % The format of the SketchImage method is:
4251 % Image *SketchImage(const Image *image,const double radius,
4252 % const double sigma,const double angle,ExceptionInfo *exception)
4254 % A description of each parameter follows:
4256 % o image: the image.
4258 % o radius: the radius of the Gaussian, in pixels, not counting
4261 % o sigma: the standard deviation of the Gaussian, in pixels.
4263 % o angle: Apply the effect along this angle.
4265 % o exception: return any errors or warnings in this structure.
4268 MagickExport Image *SketchImage(const Image *image,const double radius,
4269 const double sigma,const double angle,ExceptionInfo *exception)
4291 **restrict random_info;
4296 random_image=CloneImage(image,image->columns << 1,image->rows << 1,
4297 MagickTrue,exception);
4298 if (random_image == (Image *) NULL)
4299 return((Image *) NULL);
4301 GetMagickPixelPacket(random_image,&zero);
4302 random_info=AcquireRandomInfoThreadSet();
4303 random_view=AcquireCacheView(random_image);
4304 #if defined(MAGICKCORE_OPENMP_SUPPORT)
4305 #pragma omp parallel for schedule(dynamic,4) shared(status)
4307 for (y=0; y < (ssize_t) random_image->rows; y++)
4310 id = GetOpenMPThreadId();
4315 register IndexPacket
4321 register PixelPacket
4324 if (status == MagickFalse)
4326 q=QueueCacheViewAuthenticPixels(random_view,0,y,random_image->columns,1,
4328 if (q == (PixelPacket *) NULL)
4333 indexes=GetCacheViewAuthenticIndexQueue(random_view);
4335 for (x=0; x < (ssize_t) random_image->columns; x++)
4337 pixel.red=(MagickRealType) (QuantumRange*
4338 GetPseudoRandomValue(random_info[id]));
4339 pixel.green=pixel.red;
4340 pixel.blue=pixel.red;
4341 if (image->colorspace == CMYKColorspace)
4342 pixel.index=pixel.red;
4343 SetPixelPacket(random_image,&pixel,q,indexes+x);
4346 if (SyncCacheViewAuthenticPixels(random_view,exception) == MagickFalse)
4349 random_view=DestroyCacheView(random_view);
4350 random_info=DestroyRandomInfoThreadSet(random_info);
4351 if (status == MagickFalse)
4353 random_image=DestroyImage(random_image);
4354 return(random_image);
4356 blur_image=MotionBlurImage(random_image,radius,sigma,angle,exception);
4357 random_image=DestroyImage(random_image);
4358 if (blur_image == (Image *) NULL)
4359 return((Image *) NULL);
4360 dodge_image=EdgeImage(blur_image,radius,exception);
4361 blur_image=DestroyImage(blur_image);
4362 if (dodge_image == (Image *) NULL)
4363 return((Image *) NULL);
4364 (void) NormalizeImage(dodge_image);
4365 (void) NegateImage(dodge_image,MagickFalse);
4366 (void) TransformImage(&dodge_image,(char *) NULL,"50%");
4367 sketch_image=CloneImage(image,0,0,MagickTrue,exception);
4368 if (sketch_image == (Image *) NULL)
4370 dodge_image=DestroyImage(dodge_image);
4371 return((Image *) NULL);
4373 (void) CompositeImage(sketch_image,ColorDodgeCompositeOp,dodge_image,0,0);
4374 dodge_image=DestroyImage(dodge_image);
4375 blend_image=CloneImage(image,0,0,MagickTrue,exception);
4376 if (blend_image == (Image *) NULL)
4378 sketch_image=DestroyImage(sketch_image);
4379 return((Image *) NULL);
4381 (void) SetImageArtifact(blend_image,"compose:args","20x80");
4382 (void) CompositeImage(sketch_image,BlendCompositeOp,blend_image,0,0);
4383 blend_image=DestroyImage(blend_image);
4384 return(sketch_image);
4388 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4392 % S o l a r i z e I m a g e %
4396 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4398 % SolarizeImage() applies a special effect to the image, similar to the effect
4399 % achieved in a photo darkroom by selectively exposing areas of photo
4400 % sensitive paper to light. Threshold ranges from 0 to QuantumRange and is a
4401 % measure of the extent of the solarization.
4403 % The format of the SolarizeImage method is:
4405 % MagickBooleanType SolarizeImage(Image *image,const double threshold)
4407 % A description of each parameter follows:
4409 % o image: the image.
4411 % o threshold: Define the extent of the solarization.
4414 MagickExport MagickBooleanType SolarizeImage(Image *image,
4415 const double threshold)
4417 #define SolarizeImageTag "Solarize/Image"
4434 assert(image != (Image *) NULL);
4435 assert(image->signature == MagickSignature);
4436 if (image->debug != MagickFalse)
4437 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4438 if (image->storage_class == PseudoClass)
4446 for (i=0; i < (ssize_t) image->colors; i++)
4448 if ((MagickRealType) image->colormap[i].red > threshold)
4449 image->colormap[i].red=(Quantum) QuantumRange-image->colormap[i].red;
4450 if ((MagickRealType) image->colormap[i].green > threshold)
4451 image->colormap[i].green=(Quantum) QuantumRange-
4452 image->colormap[i].green;
4453 if ((MagickRealType) image->colormap[i].blue > threshold)
4454 image->colormap[i].blue=(Quantum) QuantumRange-
4455 image->colormap[i].blue;
4463 exception=(&image->exception);
4464 image_view=AcquireCacheView(image);
4465 #if defined(MAGICKCORE_OPENMP_SUPPORT)
4466 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
4468 for (y=0; y < (ssize_t) image->rows; y++)
4473 register PixelPacket
4476 if (status == MagickFalse)
4478 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
4480 if (q == (PixelPacket *) NULL)
4485 for (x=0; x < (ssize_t) image->columns; x++)
4487 if ((MagickRealType) q->red > threshold)
4488 q->red=(Quantum) QuantumRange-q->red;
4489 if ((MagickRealType) q->green > threshold)
4490 q->green=(Quantum) QuantumRange-q->green;
4491 if ((MagickRealType) q->blue > threshold)
4492 q->blue=(Quantum) QuantumRange-q->blue;
4495 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
4497 if (image->progress_monitor != (MagickProgressMonitor) NULL)
4502 #if defined(MAGICKCORE_OPENMP_SUPPORT)
4503 #pragma omp critical (MagickCore_SolarizeImage)
4505 proceed=SetImageProgress(image,SolarizeImageTag,progress++,image->rows);
4506 if (proceed == MagickFalse)
4510 image_view=DestroyCacheView(image_view);
4515 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4519 % S t e g a n o I m a g e %
4523 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4525 % SteganoImage() hides a digital watermark within the image. Recover
4526 % the hidden watermark later to prove that the authenticity of an image.
4527 % Offset defines the start position within the image to hide the watermark.
4529 % The format of the SteganoImage method is:
4531 % Image *SteganoImage(const Image *image,Image *watermark,
4532 % ExceptionInfo *exception)
4534 % A description of each parameter follows:
4536 % o image: the image.
4538 % o watermark: the watermark image.
4540 % o exception: return any errors or warnings in this structure.
4543 MagickExport Image *SteganoImage(const Image *image,const Image *watermark,
4544 ExceptionInfo *exception)
4546 #define GetBit(alpha,i) ((((size_t) (alpha) >> (size_t) (i)) & 0x01) != 0)
4547 #define SetBit(alpha,i,set) (alpha)=(Quantum) ((set) != 0 ? (size_t) (alpha) \
4548 | (one << (size_t) (i)) : (size_t) (alpha) & ~(one << (size_t) (i)))
4549 #define SteganoImageTag "Stegano/Image"
4567 register PixelPacket
4584 Initialize steganographic image attributes.
4586 assert(image != (const Image *) NULL);
4587 assert(image->signature == MagickSignature);
4588 if (image->debug != MagickFalse)
4589 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4590 assert(watermark != (const Image *) NULL);
4591 assert(watermark->signature == MagickSignature);
4592 assert(exception != (ExceptionInfo *) NULL);
4593 assert(exception->signature == MagickSignature);
4595 stegano_image=CloneImage(image,0,0,MagickTrue,exception);
4596 if (stegano_image == (Image *) NULL)
4597 return((Image *) NULL);
4598 if (SetImageStorageClass(stegano_image,DirectClass) == MagickFalse)
4600 InheritException(exception,&stegano_image->exception);
4601 stegano_image=DestroyImage(stegano_image);
4602 return((Image *) NULL);
4604 stegano_image->depth=MAGICKCORE_QUANTUM_DEPTH;
4606 Hide watermark in low-order bits of image.
4611 depth=stegano_image->depth;
4613 watermark_view=AcquireCacheView(watermark);
4614 stegano_view=AcquireCacheView(stegano_image);
4615 for (i=(ssize_t) depth-1; (i >= 0) && (j < (ssize_t) depth); i--)
4617 for (y=0; (y < (ssize_t) watermark->rows) && (j < (ssize_t) depth); y++)
4619 for (x=0; (x < (ssize_t) watermark->columns) && (j < (ssize_t) depth); x++)
4621 (void) GetOneCacheViewVirtualPixel(watermark_view,x,y,&pixel,exception);
4622 if ((k/(ssize_t) stegano_image->columns) >= (ssize_t) stegano_image->rows)
4624 q=GetCacheViewAuthenticPixels(stegano_view,k % (ssize_t)
4625 stegano_image->columns,k/(ssize_t) stegano_image->columns,1,1,
4627 if (q == (PixelPacket *) NULL)
4633 SetBit(q->red,j,GetBit(PixelIntensityToQuantum(&pixel),i));
4638 SetBit(q->green,j,GetBit(PixelIntensityToQuantum(&pixel),i));
4643 SetBit(q->blue,j,GetBit(PixelIntensityToQuantum(&pixel),i));
4647 if (SyncCacheViewAuthenticPixels(stegano_view,exception) == MagickFalse)
4653 if (k == (ssize_t) (stegano_image->columns*stegano_image->columns))
4655 if (k == image->offset)
4659 if (image->progress_monitor != (MagickProgressMonitor) NULL)
4664 proceed=SetImageProgress(image,SteganoImageTag,(MagickOffsetType)
4666 if (proceed == MagickFalse)
4670 stegano_view=DestroyCacheView(stegano_view);
4671 watermark_view=DestroyCacheView(watermark_view);
4672 if (stegano_image->storage_class == PseudoClass)
4673 (void) SyncImage(stegano_image);
4674 return(stegano_image);
4678 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4682 % S t e r e o A n a g l y p h I m a g e %
4686 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4688 % StereoAnaglyphImage() combines two images and produces a single image that
4689 % is the composite of a left and right image of a stereo pair. Special
4690 % red-green stereo glasses are required to view this effect.
4692 % The format of the StereoAnaglyphImage method is:
4694 % Image *StereoImage(const Image *left_image,const Image *right_image,
4695 % ExceptionInfo *exception)
4696 % Image *StereoAnaglyphImage(const Image *left_image,
4697 % const Image *right_image,const ssize_t x_offset,const ssize_t y_offset,
4698 % ExceptionInfo *exception)
4700 % A description of each parameter follows:
4702 % o left_image: the left image.
4704 % o right_image: the right image.
4706 % o exception: return any errors or warnings in this structure.
4708 % o x_offset: amount, in pixels, by which the left image is offset to the
4709 % right of the right image.
4711 % o y_offset: amount, in pixels, by which the left image is offset to the
4712 % bottom of the right image.
4716 MagickExport Image *StereoImage(const Image *left_image,
4717 const Image *right_image,ExceptionInfo *exception)
4719 return(StereoAnaglyphImage(left_image,right_image,0,0,exception));
4722 MagickExport Image *StereoAnaglyphImage(const Image *left_image,
4723 const Image *right_image,const ssize_t x_offset,const ssize_t y_offset,
4724 ExceptionInfo *exception)
4726 #define StereoImageTag "Stereo/Image"
4740 assert(left_image != (const Image *) NULL);
4741 assert(left_image->signature == MagickSignature);
4742 if (left_image->debug != MagickFalse)
4743 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
4744 left_image->filename);
4745 assert(right_image != (const Image *) NULL);
4746 assert(right_image->signature == MagickSignature);
4747 assert(exception != (ExceptionInfo *) NULL);
4748 assert(exception->signature == MagickSignature);
4749 assert(right_image != (const Image *) NULL);
4751 if ((left_image->columns != right_image->columns) ||
4752 (left_image->rows != right_image->rows))
4753 ThrowImageException(ImageError,"LeftAndRightImageSizesDiffer");
4755 Initialize stereo image attributes.
4757 stereo_image=CloneImage(left_image,left_image->columns,left_image->rows,
4758 MagickTrue,exception);
4759 if (stereo_image == (Image *) NULL)
4760 return((Image *) NULL);
4761 if (SetImageStorageClass(stereo_image,DirectClass) == MagickFalse)
4763 InheritException(exception,&stereo_image->exception);
4764 stereo_image=DestroyImage(stereo_image);
4765 return((Image *) NULL);
4768 Copy left image to red channel and right image to blue channel.
4770 for (y=0; y < (ssize_t) stereo_image->rows; y++)
4772 register const PixelPacket
4779 register PixelPacket
4782 p=GetVirtualPixels(left_image,-x_offset,y-y_offset,image->columns,1,
4784 q=GetVirtualPixels(right_image,0,y,right_image->columns,1,exception);
4785 r=QueueAuthenticPixels(stereo_image,0,y,stereo_image->columns,1,exception);
4786 if ((p == (PixelPacket *) NULL) || (q == (PixelPacket *) NULL) ||
4787 (r == (PixelPacket *) NULL))
4789 for (x=0; x < (ssize_t) stereo_image->columns; x++)
4791 r->red=GetRedPixelComponent(p);
4794 r->opacity=(Quantum) ((p->opacity+q->opacity)/2);
4799 if (SyncAuthenticPixels(stereo_image,exception) == MagickFalse)
4801 if (image->progress_monitor != (MagickProgressMonitor) NULL)
4806 proceed=SetImageProgress(image,StereoImageTag,(MagickOffsetType) y,
4807 stereo_image->rows);
4808 if (proceed == MagickFalse)
4812 return(stereo_image);
4816 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4820 % S w i r l I m a g e %
4824 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4826 % SwirlImage() swirls the pixels about the center of the image, where
4827 % degrees indicates the sweep of the arc through which each pixel is moved.
4828 % You get a more dramatic effect as the degrees move from 1 to 360.
4830 % The format of the SwirlImage method is:
4832 % Image *SwirlImage(const Image *image,double degrees,
4833 % ExceptionInfo *exception)
4835 % A description of each parameter follows:
4837 % o image: the image.
4839 % o degrees: Define the tightness of the swirling effect.
4841 % o exception: return any errors or warnings in this structure.
4844 MagickExport Image *SwirlImage(const Image *image,double degrees,
4845 ExceptionInfo *exception)
4847 #define SwirlImageTag "Swirl/Image"
4873 **restrict resample_filter;
4879 Initialize swirl image attributes.
4881 assert(image != (const Image *) NULL);
4882 assert(image->signature == MagickSignature);
4883 if (image->debug != MagickFalse)
4884 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4885 assert(exception != (ExceptionInfo *) NULL);
4886 assert(exception->signature == MagickSignature);
4887 swirl_image=CloneImage(image,0,0,MagickTrue,exception);
4888 if (swirl_image == (Image *) NULL)
4889 return((Image *) NULL);
4890 if (SetImageStorageClass(swirl_image,DirectClass) == MagickFalse)
4892 InheritException(exception,&swirl_image->exception);
4893 swirl_image=DestroyImage(swirl_image);
4894 return((Image *) NULL);
4896 if (swirl_image->background_color.opacity != OpaqueOpacity)
4897 swirl_image->matte=MagickTrue;
4899 Compute scaling factor.
4901 center.x=(double) image->columns/2.0;
4902 center.y=(double) image->rows/2.0;
4903 radius=MagickMax(center.x,center.y);
4906 if (image->columns > image->rows)
4907 scale.y=(double) image->columns/(double) image->rows;
4909 if (image->columns < image->rows)
4910 scale.x=(double) image->rows/(double) image->columns;
4911 degrees=(double) DegreesToRadians(degrees);
4917 GetMagickPixelPacket(swirl_image,&zero);
4918 resample_filter=AcquireResampleFilterThreadSet(image,
4919 UndefinedVirtualPixelMethod,MagickTrue,exception);
4920 image_view=AcquireCacheView(image);
4921 swirl_view=AcquireCacheView(swirl_image);
4922 #if defined(MAGICKCORE_OPENMP_SUPPORT)
4923 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
4925 for (y=0; y < (ssize_t) image->rows; y++)
4928 id = GetOpenMPThreadId();
4939 register IndexPacket
4940 *restrict swirl_indexes;
4945 register PixelPacket
4948 if (status == MagickFalse)
4950 q=GetCacheViewAuthenticPixels(swirl_view,0,y,swirl_image->columns,1,
4952 if (q == (PixelPacket *) NULL)
4957 swirl_indexes=GetCacheViewAuthenticIndexQueue(swirl_view);
4958 delta.y=scale.y*(double) (y-center.y);
4960 for (x=0; x < (ssize_t) image->columns; x++)
4963 Determine if the pixel is within an ellipse.
4965 delta.x=scale.x*(double) (x-center.x);
4966 distance=delta.x*delta.x+delta.y*delta.y;
4967 if (distance < (radius*radius))
4977 factor=1.0-sqrt((double) distance)/radius;
4978 sine=sin((double) (degrees*factor*factor));
4979 cosine=cos((double) (degrees*factor*factor));
4980 (void) ResamplePixelColor(resample_filter[id],(double) ((cosine*
4981 delta.x-sine*delta.y)/scale.x+center.x),(double) ((sine*delta.x+
4982 cosine*delta.y)/scale.y+center.y),&pixel);
4983 SetPixelPacket(swirl_image,&pixel,q,swirl_indexes+x);
4987 if (SyncCacheViewAuthenticPixels(swirl_view,exception) == MagickFalse)
4989 if (image->progress_monitor != (MagickProgressMonitor) NULL)
4994 #if defined(MAGICKCORE_OPENMP_SUPPORT)
4995 #pragma omp critical (MagickCore_SwirlImage)
4997 proceed=SetImageProgress(image,SwirlImageTag,progress++,image->rows);
4998 if (proceed == MagickFalse)
5002 swirl_view=DestroyCacheView(swirl_view);
5003 image_view=DestroyCacheView(image_view);
5004 resample_filter=DestroyResampleFilterThreadSet(resample_filter);
5005 if (status == MagickFalse)
5006 swirl_image=DestroyImage(swirl_image);
5007 return(swirl_image);
5011 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5015 % T i n t I m a g e %
5019 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5021 % TintImage() applies a color vector to each pixel in the image. The length
5022 % of the vector is 0 for black and white and at its maximum for the midtones.
5023 % The vector weighting function is f(x)=(1-(4.0*((x-0.5)*(x-0.5))))
5025 % The format of the TintImage method is:
5027 % Image *TintImage(const Image *image,const char *opacity,
5028 % const PixelPacket tint,ExceptionInfo *exception)
5030 % A description of each parameter follows:
5032 % o image: the image.
5034 % o opacity: A color value used for tinting.
5036 % o tint: A color value used for tinting.
5038 % o exception: return any errors or warnings in this structure.
5041 MagickExport Image *TintImage(const Image *image,const char *opacity,
5042 const PixelPacket tint,ExceptionInfo *exception)
5044 #define TintImageTag "Tint/Image"
5073 Allocate tint image.
5075 assert(image != (const Image *) NULL);
5076 assert(image->signature == MagickSignature);
5077 if (image->debug != MagickFalse)
5078 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
5079 assert(exception != (ExceptionInfo *) NULL);
5080 assert(exception->signature == MagickSignature);
5081 tint_image=CloneImage(image,image->columns,image->rows,MagickTrue,exception);
5082 if (tint_image == (Image *) NULL)
5083 return((Image *) NULL);
5084 if (SetImageStorageClass(tint_image,DirectClass) == MagickFalse)
5086 InheritException(exception,&tint_image->exception);
5087 tint_image=DestroyImage(tint_image);
5088 return((Image *) NULL);
5090 if (opacity == (const char *) NULL)
5093 Determine RGB values of the color.
5095 flags=ParseGeometry(opacity,&geometry_info);
5096 pixel.red=geometry_info.rho;
5097 if ((flags & SigmaValue) != 0)
5098 pixel.green=geometry_info.sigma;
5100 pixel.green=pixel.red;
5101 if ((flags & XiValue) != 0)
5102 pixel.blue=geometry_info.xi;
5104 pixel.blue=pixel.red;
5105 if ((flags & PsiValue) != 0)
5106 pixel.opacity=geometry_info.psi;
5108 pixel.opacity=(MagickRealType) OpaqueOpacity;
5109 color_vector.red=(MagickRealType) (pixel.red*tint.red/100.0-
5110 PixelIntensity(&tint));
5111 color_vector.green=(MagickRealType) (pixel.green*tint.green/100.0-
5112 PixelIntensity(&tint));
5113 color_vector.blue=(MagickRealType) (pixel.blue*tint.blue/100.0-
5114 PixelIntensity(&tint));
5120 image_view=AcquireCacheView(image);
5121 tint_view=AcquireCacheView(tint_image);
5122 #if defined(MAGICKCORE_OPENMP_SUPPORT)
5123 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
5125 for (y=0; y < (ssize_t) image->rows; y++)
5127 register const PixelPacket
5133 register PixelPacket
5136 if (status == MagickFalse)
5138 p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
5139 q=QueueCacheViewAuthenticPixels(tint_view,0,y,tint_image->columns,1,
5141 if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
5146 for (x=0; x < (ssize_t) image->columns; x++)
5154 weight=QuantumScale*p->red-0.5;
5155 pixel.red=(MagickRealType) p->red+color_vector.red*(1.0-(4.0*
5157 SetRedPixelComponent(q,ClampRedPixelComponent(&pixel));
5158 weight=QuantumScale*p->green-0.5;
5159 pixel.green=(MagickRealType) p->green+color_vector.green*(1.0-(4.0*
5161 SetGreenPixelComponent(q,ClampGreenPixelComponent(&pixel));
5162 weight=QuantumScale*p->blue-0.5;
5163 pixel.blue=(MagickRealType) p->blue+color_vector.blue*(1.0-(4.0*
5165 SetBluePixelComponent(q,ClampBluePixelComponent(&pixel));
5166 SetOpacityPixelComponent(q,GetOpacityPixelComponent(p));
5170 if (SyncCacheViewAuthenticPixels(tint_view,exception) == MagickFalse)
5172 if (image->progress_monitor != (MagickProgressMonitor) NULL)
5177 #if defined(MAGICKCORE_OPENMP_SUPPORT)
5178 #pragma omp critical (MagickCore_TintImage)
5180 proceed=SetImageProgress(image,TintImageTag,progress++,image->rows);
5181 if (proceed == MagickFalse)
5185 tint_view=DestroyCacheView(tint_view);
5186 image_view=DestroyCacheView(image_view);
5187 if (status == MagickFalse)
5188 tint_image=DestroyImage(tint_image);
5193 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5197 % V i g n e t t e I m a g e %
5201 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5203 % VignetteImage() softens the edges of the image in vignette style.
5205 % The format of the VignetteImage method is:
5207 % Image *VignetteImage(const Image *image,const double radius,
5208 % const double sigma,const ssize_t x,const ssize_t y,ExceptionInfo *exception)
5210 % A description of each parameter follows:
5212 % o image: the image.
5214 % o radius: the radius of the pixel neighborhood.
5216 % o sigma: the standard deviation of the Gaussian, in pixels.
5218 % o x, y: Define the x and y ellipse offset.
5220 % o exception: return any errors or warnings in this structure.
5223 MagickExport Image *VignetteImage(const Image *image,const double radius,
5224 const double sigma,const ssize_t x,const ssize_t y,ExceptionInfo *exception)
5227 ellipse[MaxTextExtent];
5238 assert(image != (Image *) NULL);
5239 assert(image->signature == MagickSignature);
5240 if (image->debug != MagickFalse)
5241 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
5242 assert(exception != (ExceptionInfo *) NULL);
5243 assert(exception->signature == MagickSignature);
5244 canvas_image=CloneImage(image,0,0,MagickTrue,exception);
5245 if (canvas_image == (Image *) NULL)
5246 return((Image *) NULL);
5247 if (SetImageStorageClass(canvas_image,DirectClass) == MagickFalse)
5249 InheritException(exception,&canvas_image->exception);
5250 canvas_image=DestroyImage(canvas_image);
5251 return((Image *) NULL);
5253 canvas_image->matte=MagickTrue;
5254 oval_image=CloneImage(canvas_image,canvas_image->columns,
5255 canvas_image->rows,MagickTrue,exception);
5256 if (oval_image == (Image *) NULL)
5258 canvas_image=DestroyImage(canvas_image);
5259 return((Image *) NULL);
5261 (void) QueryColorDatabase("#000000",&oval_image->background_color,exception);
5262 (void) SetImageBackgroundColor(oval_image);
5263 draw_info=CloneDrawInfo((const ImageInfo *) NULL,(const DrawInfo *) NULL);
5264 (void) QueryColorDatabase("#ffffff",&draw_info->fill,exception);
5265 (void) QueryColorDatabase("#ffffff",&draw_info->stroke,exception);
5266 (void) FormatMagickString(ellipse,MaxTextExtent,
5267 "ellipse %g,%g,%g,%g,0.0,360.0",image->columns/2.0,
5268 image->rows/2.0,image->columns/2.0-x,image->rows/2.0-y);
5269 draw_info->primitive=AcquireString(ellipse);
5270 (void) DrawImage(oval_image,draw_info);
5271 draw_info=DestroyDrawInfo(draw_info);
5272 blur_image=BlurImage(oval_image,radius,sigma,exception);
5273 oval_image=DestroyImage(oval_image);
5274 if (blur_image == (Image *) NULL)
5276 canvas_image=DestroyImage(canvas_image);
5277 return((Image *) NULL);
5279 blur_image->matte=MagickFalse;
5280 (void) CompositeImage(canvas_image,CopyOpacityCompositeOp,blur_image,0,0);
5281 blur_image=DestroyImage(blur_image);
5282 vignette_image=MergeImageLayers(canvas_image,FlattenLayer,exception);
5283 canvas_image=DestroyImage(canvas_image);
5284 return(vignette_image);
5288 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5292 % W a v e I m a g e %
5296 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5298 % WaveImage() creates a "ripple" effect in the image by shifting the pixels
5299 % vertically along a sine wave whose amplitude and wavelength is specified
5300 % by the given parameters.
5302 % The format of the WaveImage method is:
5304 % Image *WaveImage(const Image *image,const double amplitude,
5305 % const double wave_length,ExceptionInfo *exception)
5307 % A description of each parameter follows:
5309 % o image: the image.
5311 % o amplitude, wave_length: Define the amplitude and wave length of the
5314 % o exception: return any errors or warnings in this structure.
5317 MagickExport Image *WaveImage(const Image *image,const double amplitude,
5318 const double wave_length,ExceptionInfo *exception)
5320 #define WaveImageTag "Wave/Image"
5344 **restrict resample_filter;
5350 Initialize wave image attributes.
5352 assert(image != (Image *) NULL);
5353 assert(image->signature == MagickSignature);
5354 if (image->debug != MagickFalse)
5355 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
5356 assert(exception != (ExceptionInfo *) NULL);
5357 assert(exception->signature == MagickSignature);
5358 wave_image=CloneImage(image,image->columns,(size_t) (image->rows+2.0*
5359 fabs(amplitude)),MagickTrue,exception);
5360 if (wave_image == (Image *) NULL)
5361 return((Image *) NULL);
5362 if (SetImageStorageClass(wave_image,DirectClass) == MagickFalse)
5364 InheritException(exception,&wave_image->exception);
5365 wave_image=DestroyImage(wave_image);
5366 return((Image *) NULL);
5368 if (wave_image->background_color.opacity != OpaqueOpacity)
5369 wave_image->matte=MagickTrue;
5373 sine_map=(MagickRealType *) AcquireQuantumMemory((size_t) wave_image->columns,
5375 if (sine_map == (MagickRealType *) NULL)
5377 wave_image=DestroyImage(wave_image);
5378 ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
5380 for (i=0; i < (ssize_t) wave_image->columns; i++)
5381 sine_map[i]=fabs(amplitude)+amplitude*sin((double) ((2.0*MagickPI*i)/
5388 GetMagickPixelPacket(wave_image,&zero);
5389 resample_filter=AcquireResampleFilterThreadSet(image,
5390 BackgroundVirtualPixelMethod,MagickTrue,exception);
5391 wave_view=AcquireCacheView(wave_image);
5392 #if defined(MAGICKCORE_OPENMP_SUPPORT)
5393 #pragma omp parallel for schedule(dynamic,4) shared(progress,status)
5395 for (y=0; y < (ssize_t) wave_image->rows; y++)
5398 id = GetOpenMPThreadId();
5403 register IndexPacket
5409 register PixelPacket
5412 if (status == MagickFalse)
5414 q=QueueCacheViewAuthenticPixels(wave_view,0,y,wave_image->columns,1,
5416 if (q == (PixelPacket *) NULL)
5421 indexes=GetCacheViewAuthenticIndexQueue(wave_view);
5423 for (x=0; x < (ssize_t) wave_image->columns; x++)
5425 (void) ResamplePixelColor(resample_filter[id],(double) x,(double) (y-
5426 sine_map[x]),&pixel);
5427 SetPixelPacket(wave_image,&pixel,q,indexes+x);
5430 if (SyncCacheViewAuthenticPixels(wave_view,exception) == MagickFalse)
5432 if (image->progress_monitor != (MagickProgressMonitor) NULL)
5437 #if defined(MAGICKCORE_OPENMP_SUPPORT)
5438 #pragma omp critical (MagickCore_WaveImage)
5440 proceed=SetImageProgress(image,WaveImageTag,progress++,image->rows);
5441 if (proceed == MagickFalse)
5445 wave_view=DestroyCacheView(wave_view);
5446 resample_filter=DestroyResampleFilterThreadSet(resample_filter);
5447 sine_map=(MagickRealType *) RelinquishMagickMemory(sine_map);
5448 if (status == MagickFalse)
5449 wave_image=DestroyImage(wave_image);