| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % PPPP AAA IIIII N N TTTTT % |
| % P P A A I NN N T % |
| % PPPP AAAAA I N N N T % |
| % P A A I N NN T % |
| % P A A IIIII N N T % |
| % % |
| % % |
| % Methods to Paint on an Image % |
| % % |
| % Software Design % |
| % John Cristy % |
| % July 1998 % |
| % % |
| % % |
| % Copyright 1999-2010 ImageMagick Studio LLC, a non-profit organization % |
| % dedicated to making software imaging solutions freely available. % |
| % % |
| % You may not use this file except in compliance with the License. You may % |
| % obtain a copy of the License at % |
| % % |
| % http://www.imagemagick.org/script/license.php % |
| % % |
| % Unless required by applicable law or agreed to in writing, software % |
| % distributed under the License is distributed on an "AS IS" BASIS, % |
| % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. % |
| % See the License for the specific language governing permissions and % |
| % limitations under the License. % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % |
| */ |
| |
| /* |
| Include declarations. |
| */ |
| #include "magick/studio.h" |
| #include "magick/color.h" |
| #include "magick/color-private.h" |
| #include "magick/colorspace-private.h" |
| #include "magick/composite.h" |
| #include "magick/composite-private.h" |
| #include "magick/draw.h" |
| #include "magick/draw-private.h" |
| #include "magick/exception.h" |
| #include "magick/exception-private.h" |
| #include "magick/gem.h" |
| #include "magick/monitor.h" |
| #include "magick/monitor-private.h" |
| #include "magick/paint.h" |
| #include "magick/pixel-private.h" |
| #include "magick/string_.h" |
| #include "magick/thread-private.h" |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % F l o o d f i l l P a i n t I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % FloodfillPaintImage() changes the color value of any pixel that matches |
| % target and is an immediate neighbor. If the method FillToBorderMethod is |
| % specified, the color value is changed for any neighbor pixel that does not |
| % match the bordercolor member of image. |
| % |
| % By default target must match a particular pixel color exactly. |
| % However, in many cases two colors may differ by a small amount. The |
| % fuzz member of image defines how much tolerance is acceptable to |
| % consider two colors as the same. For example, set fuzz to 10 and the |
| % color red at intensities of 100 and 102 respectively are now |
| % interpreted as the same color for the purposes of the floodfill. |
| % |
| % The format of the FloodfillPaintImage method is: |
| % |
| % MagickBooleanType FloodfillPaintImage(Image *image, |
| % const ChannelType channel,const DrawInfo *draw_info, |
| % const MagickPixelPacket target,const ssize_t x_offset,const ssize_t y_offset, |
| % const MagickBooleanType invert) |
| % |
| % A description of each parameter follows: |
| % |
| % o image: the image. |
| % |
| % o channel: the channel(s). |
| % |
| % o draw_info: the draw info. |
| % |
| % o target: the RGB value of the target color. |
| % |
| % o x_offset,y_offset: the starting location of the operation. |
| % |
| % o invert: paint any pixel that does not match the target color. |
| % |
| */ |
| MagickExport MagickBooleanType FloodfillPaintImage(Image *image, |
| const ChannelType channel,const DrawInfo *draw_info, |
| const MagickPixelPacket *target,const ssize_t x_offset,const ssize_t y_offset, |
| const MagickBooleanType invert) |
| { |
| #define MaxStacksize (1UL << 15) |
| #define PushSegmentStack(up,left,right,delta) \ |
| { \ |
| if (s >= (segment_stack+MaxStacksize)) \ |
| ThrowBinaryException(DrawError,"SegmentStackOverflow",image->filename) \ |
| else \ |
| { \ |
| if ((((up)+(delta)) >= 0) && (((up)+(delta)) < (ssize_t) image->rows)) \ |
| { \ |
| s->x1=(double) (left); \ |
| s->y1=(double) (up); \ |
| s->x2=(double) (right); \ |
| s->y2=(double) (delta); \ |
| s++; \ |
| } \ |
| } \ |
| } |
| |
| ExceptionInfo |
| *exception; |
| |
| Image |
| *floodplane_image; |
| |
| ssize_t |
| offset, |
| start, |
| x, |
| x1, |
| x2, |
| y; |
| |
| MagickBooleanType |
| skip; |
| |
| MagickPixelPacket |
| fill, |
| pixel; |
| |
| PixelPacket |
| fill_color; |
| |
| register SegmentInfo |
| *s; |
| |
| SegmentInfo |
| *segment_stack; |
| |
| /* |
| Check boundary conditions. |
| */ |
| assert(image != (Image *) NULL); |
| assert(image->signature == MagickSignature); |
| if (image->debug != MagickFalse) |
| (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| assert(draw_info != (DrawInfo *) NULL); |
| assert(draw_info->signature == MagickSignature); |
| if ((x_offset < 0) || (x_offset >= (ssize_t) image->columns)) |
| return(MagickFalse); |
| if ((y_offset < 0) || (y_offset >= (ssize_t) image->rows)) |
| return(MagickFalse); |
| if (SetImageStorageClass(image,DirectClass) == MagickFalse) |
| return(MagickFalse); |
| if (image->matte == MagickFalse) |
| (void) SetImageAlphaChannel(image,OpaqueAlphaChannel); |
| /* |
| Set floodfill state. |
| */ |
| floodplane_image=CloneImage(image,0,0,MagickTrue,&image->exception); |
| if (floodplane_image == (Image *) NULL) |
| return(MagickFalse); |
| (void) SetImageAlphaChannel(floodplane_image,OpaqueAlphaChannel); |
| segment_stack=(SegmentInfo *) AcquireQuantumMemory(MaxStacksize, |
| sizeof(*segment_stack)); |
| if (segment_stack == (SegmentInfo *) NULL) |
| { |
| floodplane_image=DestroyImage(floodplane_image); |
| ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed", |
| image->filename); |
| } |
| /* |
| Push initial segment on stack. |
| */ |
| exception=(&image->exception); |
| x=x_offset; |
| y=y_offset; |
| start=0; |
| s=segment_stack; |
| PushSegmentStack(y,x,x,1); |
| PushSegmentStack(y+1,x,x,-1); |
| GetMagickPixelPacket(image,&fill); |
| GetMagickPixelPacket(image,&pixel); |
| while (s > segment_stack) |
| { |
| register const IndexPacket |
| *restrict indexes; |
| |
| register const PixelPacket |
| *restrict p; |
| |
| register ssize_t |
| x; |
| |
| register PixelPacket |
| *restrict q; |
| |
| /* |
| Pop segment off stack. |
| */ |
| s--; |
| x1=(ssize_t) s->x1; |
| x2=(ssize_t) s->x2; |
| offset=(ssize_t) s->y2; |
| y=(ssize_t) s->y1+offset; |
| /* |
| Recolor neighboring pixels. |
| */ |
| p=GetVirtualPixels(image,0,y,(size_t) (x1+1),1,exception); |
| q=GetAuthenticPixels(floodplane_image,0,y,(size_t) (x1+1),1, |
| exception); |
| if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) |
| break; |
| indexes=GetVirtualIndexQueue(image); |
| p+=x1; |
| q+=x1; |
| for (x=x1; x >= 0; x--) |
| { |
| if (q->opacity == (Quantum) TransparentOpacity) |
| break; |
| SetMagickPixelPacket(image,p,indexes+x,&pixel); |
| if (IsMagickColorSimilar(&pixel,target) == invert) |
| break; |
| q->opacity=(Quantum) TransparentOpacity; |
| p--; |
| q--; |
| } |
| if (SyncAuthenticPixels(floodplane_image,exception) == MagickFalse) |
| break; |
| skip=x >= x1 ? MagickTrue : MagickFalse; |
| if (skip == MagickFalse) |
| { |
| start=x+1; |
| if (start < x1) |
| PushSegmentStack(y,start,x1-1,-offset); |
| x=x1+1; |
| } |
| do |
| { |
| if (skip == MagickFalse) |
| { |
| if (x < (ssize_t) image->columns) |
| { |
| p=GetVirtualPixels(image,x,y,image->columns-x,1,exception); |
| q=GetAuthenticPixels(floodplane_image,x,y,image->columns-x,1, |
| exception); |
| if ((p == (const PixelPacket *) NULL) || |
| (q == (PixelPacket *) NULL)) |
| break; |
| indexes=GetVirtualIndexQueue(image); |
| for ( ; x < (ssize_t) image->columns; x++) |
| { |
| if (q->opacity == (Quantum) TransparentOpacity) |
| break; |
| SetMagickPixelPacket(image,p,indexes+x,&pixel); |
| if (IsMagickColorSimilar(&pixel,target) == invert) |
| break; |
| q->opacity=(Quantum) TransparentOpacity; |
| p++; |
| q++; |
| } |
| if (SyncAuthenticPixels(floodplane_image,exception) == MagickFalse) |
| break; |
| } |
| PushSegmentStack(y,start,x-1,offset); |
| if (x > (x2+1)) |
| PushSegmentStack(y,x2+1,x-1,-offset); |
| } |
| skip=MagickFalse; |
| x++; |
| if (x <= x2) |
| { |
| p=GetVirtualPixels(image,x,y,(size_t) (x2-x+1),1,exception); |
| q=GetAuthenticPixels(floodplane_image,x,y,(size_t) (x2-x+1),1, |
| exception); |
| if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) |
| break; |
| indexes=GetVirtualIndexQueue(image); |
| for ( ; x <= x2; x++) |
| { |
| if (q->opacity == (Quantum) TransparentOpacity) |
| break; |
| SetMagickPixelPacket(image,p,indexes+x,&pixel); |
| if (IsMagickColorSimilar(&pixel,target) != invert) |
| break; |
| p++; |
| q++; |
| } |
| } |
| start=x; |
| } while (x <= x2); |
| } |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| register const PixelPacket |
| *restrict p; |
| |
| register IndexPacket |
| *restrict indexes; |
| |
| register ssize_t |
| x; |
| |
| register PixelPacket |
| *restrict q; |
| |
| /* |
| Tile fill color onto floodplane. |
| */ |
| p=GetVirtualPixels(floodplane_image,0,y,image->columns,1,exception); |
| q=GetAuthenticPixels(image,0,y,image->columns,1,exception); |
| if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) |
| break; |
| indexes=GetAuthenticIndexQueue(image); |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| if (p->opacity != OpaqueOpacity) |
| { |
| (void) GetFillColor(draw_info,x,y,&fill_color); |
| SetMagickPixelPacket(image,&fill_color,(IndexPacket *) NULL,&fill); |
| if (image->colorspace == CMYKColorspace) |
| ConvertRGBToCMYK(&fill); |
| if ((channel & RedChannel) != 0) |
| q->red=ClampToQuantum(fill.red); |
| if ((channel & GreenChannel) != 0) |
| q->green=ClampToQuantum(fill.green); |
| if ((channel & BlueChannel) != 0) |
| q->blue=ClampToQuantum(fill.blue); |
| if ((channel & OpacityChannel) != 0) |
| q->opacity=ClampToQuantum(fill.opacity); |
| if (((channel & IndexChannel) != 0) && |
| (image->colorspace == CMYKColorspace)) |
| indexes[x]=ClampToQuantum(fill.index); |
| } |
| p++; |
| q++; |
| } |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| } |
| segment_stack=(SegmentInfo *) RelinquishMagickMemory(segment_stack); |
| floodplane_image=DestroyImage(floodplane_image); |
| return(y == (ssize_t) image->rows ? MagickTrue : MagickFalse); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| + G r a d i e n t I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % GradientImage() applies a continuously smooth color transitions along a |
| % vector from one color to another. |
| % |
| % Note, the interface of this method will change in the future to support |
| % more than one transistion. |
| % |
| % The format of the GradientImage method is: |
| % |
| % MagickBooleanType GradientImage(Image *image,const GradientType type, |
| % const SpreadMethod method,const PixelPacket *start_color, |
| % const PixelPacket *stop_color) |
| % |
| % A description of each parameter follows: |
| % |
| % o image: the image. |
| % |
| % o type: the gradient type: linear or radial. |
| % |
| % o spread: the gradient spread meathod: pad, reflect, or repeat. |
| % |
| % o start_color: the start color. |
| % |
| % o stop_color: the stop color. |
| % |
| % This provides a good example of making use of the DrawGradientImage |
| % function and the gradient structure in draw_info. |
| */ |
| |
| static inline double MagickMax(const double x,const double y) |
| { |
| return(x > y ? x : y); |
| } |
| |
| MagickExport MagickBooleanType GradientImage(Image *image, |
| const GradientType type,const SpreadMethod method, |
| const PixelPacket *start_color,const PixelPacket *stop_color) |
| { |
| DrawInfo |
| *draw_info; |
| |
| GradientInfo |
| *gradient; |
| |
| MagickBooleanType |
| status; |
| |
| register ssize_t |
| i; |
| |
| /* |
| Set gradient start-stop end points. |
| */ |
| assert(image != (const Image *) NULL); |
| assert(image->signature == MagickSignature); |
| if (image->debug != MagickFalse) |
| (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| assert(start_color != (const PixelPacket *) NULL); |
| assert(stop_color != (const PixelPacket *) NULL); |
| draw_info=AcquireDrawInfo(); |
| gradient=(&draw_info->gradient); |
| gradient->type=type; |
| gradient->bounding_box.width=image->columns; |
| gradient->bounding_box.height=image->rows; |
| gradient->gradient_vector.x2=(double) image->columns-1.0; |
| gradient->gradient_vector.y2=(double) image->rows-1.0; |
| if ((type == LinearGradient) && (gradient->gradient_vector.y2 != 0.0)) |
| gradient->gradient_vector.x2=0.0; |
| gradient->center.x=(double) gradient->gradient_vector.x2/2.0; |
| gradient->center.y=(double) gradient->gradient_vector.y2/2.0; |
| gradient->radius=MagickMax(gradient->center.x,gradient->center.y); |
| gradient->spread=method; |
| /* |
| Define the gradient to fill between the stops. |
| */ |
| gradient->number_stops=2; |
| gradient->stops=(StopInfo *) AcquireQuantumMemory(gradient->number_stops, |
| sizeof(*gradient->stops)); |
| if (gradient->stops == (StopInfo *) NULL) |
| ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed", |
| image->filename); |
| (void) ResetMagickMemory(gradient->stops,0,gradient->number_stops* |
| sizeof(*gradient->stops)); |
| for (i=0; i < (ssize_t) gradient->number_stops; i++) |
| GetMagickPixelPacket(image,&gradient->stops[i].color); |
| SetMagickPixelPacket(image,start_color,(IndexPacket *) NULL, |
| &gradient->stops[0].color); |
| gradient->stops[0].offset=0.0; |
| SetMagickPixelPacket(image,stop_color,(IndexPacket *) NULL, |
| &gradient->stops[1].color); |
| gradient->stops[1].offset=1.0; |
| /* |
| Draw a gradient on the image. |
| */ |
| status=DrawGradientImage(image,draw_info); |
| draw_info=DestroyDrawInfo(draw_info); |
| if ((start_color->opacity == OpaqueOpacity) && |
| (stop_color->opacity == OpaqueOpacity)) |
| image->matte=MagickFalse; |
| if ((IsGrayPixel(start_color) != MagickFalse) && |
| (IsGrayPixel(stop_color) != MagickFalse)) |
| image->type=GrayscaleType; |
| return(status); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % O i l P a i n t I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % OilPaintImage() applies a special effect filter that simulates an oil |
| % painting. Each pixel is replaced by the most frequent color occurring |
| % in a circular region defined by radius. |
| % |
| % The format of the OilPaintImage method is: |
| % |
| % Image *OilPaintImage(const Image *image,const double radius, |
| % ExceptionInfo *exception) |
| % |
| % A description of each parameter follows: |
| % |
| % o image: the image. |
| % |
| % o radius: the radius of the circular neighborhood. |
| % |
| % o exception: return any errors or warnings in this structure. |
| % |
| */ |
| |
| static size_t **DestroyHistogramThreadSet(size_t **histogram) |
| { |
| register ssize_t |
| i; |
| |
| assert(histogram != (size_t **) NULL); |
| for (i=0; i < (ssize_t) GetOpenMPMaximumThreads(); i++) |
| if (histogram[i] != (size_t *) NULL) |
| histogram[i]=(size_t *) RelinquishMagickMemory(histogram[i]); |
| histogram=(size_t **) RelinquishAlignedMemory(histogram); |
| return(histogram); |
| } |
| |
| static size_t **AcquireHistogramThreadSet(const size_t count) |
| { |
| register ssize_t |
| i; |
| |
| size_t |
| **histogram, |
| number_threads; |
| |
| number_threads=GetOpenMPMaximumThreads(); |
| histogram=(size_t **) AcquireAlignedMemory(number_threads, |
| sizeof(*histogram)); |
| if (histogram == (size_t **) NULL) |
| return((size_t **) NULL); |
| (void) ResetMagickMemory(histogram,0,number_threads*sizeof(*histogram)); |
| for (i=0; i < (ssize_t) number_threads; i++) |
| { |
| histogram[i]=(size_t *) AcquireQuantumMemory(count, |
| sizeof(**histogram)); |
| if (histogram[i] == (size_t *) NULL) |
| return(DestroyHistogramThreadSet(histogram)); |
| } |
| return(histogram); |
| } |
| |
| MagickExport Image *OilPaintImage(const Image *image,const double radius, |
| ExceptionInfo *exception) |
| { |
| #define NumberPaintBins 256 |
| #define OilPaintImageTag "OilPaint/Image" |
| |
| CacheView |
| *image_view, |
| *paint_view; |
| |
| Image |
| *paint_image; |
| |
| MagickBooleanType |
| status; |
| |
| MagickOffsetType |
| progress; |
| |
| size_t |
| **restrict histograms, |
| width; |
| |
| ssize_t |
| y; |
| |
| /* |
| Initialize painted image attributes. |
| */ |
| assert(image != (const Image *) NULL); |
| assert(image->signature == MagickSignature); |
| if (image->debug != MagickFalse) |
| (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| assert(exception != (ExceptionInfo *) NULL); |
| assert(exception->signature == MagickSignature); |
| width=GetOptimalKernelWidth2D(radius,0.5); |
| if ((image->columns < width) || (image->rows < width)) |
| ThrowImageException(OptionError,"ImageSmallerThanRadius"); |
| paint_image=CloneImage(image,image->columns,image->rows,MagickTrue,exception); |
| if (paint_image == (Image *) NULL) |
| return((Image *) NULL); |
| if (SetImageStorageClass(paint_image,DirectClass) == MagickFalse) |
| { |
| InheritException(exception,&paint_image->exception); |
| paint_image=DestroyImage(paint_image); |
| return((Image *) NULL); |
| } |
| histograms=AcquireHistogramThreadSet(NumberPaintBins); |
| if (histograms == (size_t **) NULL) |
| { |
| paint_image=DestroyImage(paint_image); |
| ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
| } |
| /* |
| Oil paint image. |
| */ |
| status=MagickTrue; |
| progress=0; |
| image_view=AcquireCacheView(image); |
| paint_view=AcquireCacheView(paint_image); |
| #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| #pragma omp parallel for schedule(dynamic,4) shared(progress,status) |
| #endif |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| register const IndexPacket |
| *restrict indexes; |
| |
| register const PixelPacket |
| *restrict p; |
| |
| register IndexPacket |
| *restrict paint_indexes; |
| |
| register ssize_t |
| x; |
| |
| register PixelPacket |
| *restrict q; |
| |
| register size_t |
| *histogram; |
| |
| if (status == MagickFalse) |
| continue; |
| p=GetCacheViewVirtualPixels(image_view,-((ssize_t) width/2L),y-(ssize_t) (width/ |
| 2L),image->columns+width,width,exception); |
| q=QueueCacheViewAuthenticPixels(paint_view,0,y,paint_image->columns,1, |
| exception); |
| if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL)) |
| { |
| status=MagickFalse; |
| continue; |
| } |
| indexes=GetCacheViewVirtualIndexQueue(image_view); |
| paint_indexes=GetCacheViewAuthenticIndexQueue(paint_view); |
| histogram=histograms[GetOpenMPThreadId()]; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| ssize_t |
| j, |
| k, |
| v; |
| |
| register ssize_t |
| i, |
| u; |
| |
| size_t |
| count; |
| |
| /* |
| Assign most frequent color. |
| */ |
| i=0; |
| j=0; |
| count=0; |
| (void) ResetMagickMemory(histogram,0,NumberPaintBins*sizeof(*histogram)); |
| for (v=0; v < (ssize_t) width; v++) |
| { |
| for (u=0; u < (ssize_t) width; u++) |
| { |
| k=(ssize_t) ScaleQuantumToChar(PixelIntensityToQuantum(p+u+i)); |
| histogram[k]++; |
| if (histogram[k] > count) |
| { |
| j=i+u; |
| count=histogram[k]; |
| } |
| } |
| i+=(ssize_t) (image->columns+width); |
| } |
| *q=(*(p+j)); |
| if (image->colorspace == CMYKColorspace) |
| paint_indexes[x]=indexes[x+j]; |
| p++; |
| q++; |
| } |
| if (SyncCacheViewAuthenticPixels(paint_view,exception) == MagickFalse) |
| status=MagickFalse; |
| if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| { |
| MagickBooleanType |
| proceed; |
| |
| #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| #pragma omp critical (MagickCore_OilPaintImage) |
| #endif |
| proceed=SetImageProgress(image,OilPaintImageTag,progress++,image->rows); |
| if (proceed == MagickFalse) |
| status=MagickFalse; |
| } |
| } |
| paint_view=DestroyCacheView(paint_view); |
| image_view=DestroyCacheView(image_view); |
| histograms=DestroyHistogramThreadSet(histograms); |
| if (status == MagickFalse) |
| paint_image=DestroyImage(paint_image); |
| return(paint_image); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % O p a q u e P a i n t I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % OpaquePaintImage() changes any pixel that matches color with the color |
| % defined by fill. |
| % |
| % By default color must match a particular pixel color exactly. However, |
| % in many cases two colors may differ by a small amount. Fuzz defines |
| % how much tolerance is acceptable to consider two colors as the same. |
| % For example, set fuzz to 10 and the color red at intensities of 100 and |
| % 102 respectively are now interpreted as the same color. |
| % |
| % The format of the OpaquePaintImage method is: |
| % |
| % MagickBooleanType OpaquePaintImage(Image *image, |
| % const PixelPacket *target,const PixelPacket *fill, |
| % const MagickBooleanType invert) |
| % MagickBooleanType OpaquePaintImageChannel(Image *image, |
| % const ChannelType channel,const PixelPacket *target, |
| % const PixelPacket *fill,const MagickBooleanType invert) |
| % |
| % A description of each parameter follows: |
| % |
| % o image: the image. |
| % |
| % o channel: the channel(s). |
| % |
| % o target: the RGB value of the target color. |
| % |
| % o fill: the replacement color. |
| % |
| % o invert: paint any pixel that does not match the target color. |
| % |
| */ |
| |
| MagickExport MagickBooleanType OpaquePaintImage(Image *image, |
| const MagickPixelPacket *target,const MagickPixelPacket *fill, |
| const MagickBooleanType invert) |
| { |
| return(OpaquePaintImageChannel(image,AllChannels,target,fill,invert)); |
| } |
| |
| MagickExport MagickBooleanType OpaquePaintImageChannel(Image *image, |
| const ChannelType channel,const MagickPixelPacket *target, |
| const MagickPixelPacket *fill,const MagickBooleanType invert) |
| { |
| #define OpaquePaintImageTag "Opaque/Image" |
| |
| CacheView |
| *image_view; |
| |
| ExceptionInfo |
| *exception; |
| |
| MagickBooleanType |
| status; |
| |
| MagickOffsetType |
| progress; |
| |
| MagickPixelPacket |
| zero; |
| |
| ssize_t |
| y; |
| |
| assert(image != (Image *) NULL); |
| assert(image->signature == MagickSignature); |
| assert(target != (MagickPixelPacket *) NULL); |
| assert(fill != (MagickPixelPacket *) NULL); |
| if (image->debug != MagickFalse) |
| (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| if (SetImageStorageClass(image,DirectClass) == MagickFalse) |
| return(MagickFalse); |
| /* |
| Make image color opaque. |
| */ |
| status=MagickTrue; |
| progress=0; |
| exception=(&image->exception); |
| GetMagickPixelPacket(image,&zero); |
| image_view=AcquireCacheView(image); |
| #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| #pragma omp parallel for schedule(dynamic,4) shared(progress,status) |
| #endif |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| MagickPixelPacket |
| pixel; |
| |
| register IndexPacket |
| *restrict indexes; |
| |
| register ssize_t |
| x; |
| |
| register PixelPacket |
| *restrict q; |
| |
| if (status == MagickFalse) |
| continue; |
| q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception); |
| if (q == (PixelPacket *) NULL) |
| { |
| status=MagickFalse; |
| continue; |
| } |
| indexes=GetCacheViewAuthenticIndexQueue(image_view); |
| pixel=zero; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| SetMagickPixelPacket(image,q,indexes+x,&pixel); |
| if (IsMagickColorSimilar(&pixel,target) != invert) |
| { |
| if ((channel & RedChannel) != 0) |
| q->red=ClampToQuantum(fill->red); |
| if ((channel & GreenChannel) != 0) |
| q->green=ClampToQuantum(fill->green); |
| if ((channel & BlueChannel) != 0) |
| q->blue=ClampToQuantum(fill->blue); |
| if ((channel & OpacityChannel) != 0) |
| q->opacity=ClampToQuantum(fill->opacity); |
| if (((channel & IndexChannel) != 0) && |
| (image->colorspace == CMYKColorspace)) |
| indexes[x]=ClampToQuantum(fill->index); |
| } |
| q++; |
| } |
| if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse) |
| status=MagickFalse; |
| if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| { |
| MagickBooleanType |
| proceed; |
| |
| #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| #pragma omp critical (MagickCore_OpaquePaintImageChannel) |
| #endif |
| proceed=SetImageProgress(image,OpaquePaintImageTag,progress++, |
| image->rows); |
| if (proceed == MagickFalse) |
| status=MagickFalse; |
| } |
| } |
| image_view=DestroyCacheView(image_view); |
| return(status); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % T r a n s p a r e n t P a i n t I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % TransparentPaintImage() changes the opacity value associated with any pixel |
| % that matches color to the value defined by opacity. |
| % |
| % By default color must match a particular pixel color exactly. However, |
| % in many cases two colors may differ by a small amount. Fuzz defines |
| % how much tolerance is acceptable to consider two colors as the same. |
| % For example, set fuzz to 10 and the color red at intensities of 100 and |
| % 102 respectively are now interpreted as the same color. |
| % |
| % The format of the TransparentPaintImage method is: |
| % |
| % MagickBooleanType TransparentPaintImage(Image *image, |
| % const MagickPixelPacket *target,const Quantum opacity, |
| % const MagickBooleanType invert) |
| % |
| % A description of each parameter follows: |
| % |
| % o image: the image. |
| % |
| % o target: the target color. |
| % |
| % o opacity: the replacement opacity value. |
| % |
| % o invert: paint any pixel that does not match the target color. |
| % |
| */ |
| MagickExport MagickBooleanType TransparentPaintImage(Image *image, |
| const MagickPixelPacket *target,const Quantum opacity, |
| const MagickBooleanType invert) |
| { |
| #define TransparentPaintImageTag "Transparent/Image" |
| |
| CacheView |
| *image_view; |
| |
| ExceptionInfo |
| *exception; |
| |
| MagickBooleanType |
| status; |
| |
| MagickOffsetType |
| progress; |
| |
| MagickPixelPacket |
| zero; |
| |
| ssize_t |
| y; |
| |
| assert(image != (Image *) NULL); |
| assert(image->signature == MagickSignature); |
| assert(target != (MagickPixelPacket *) NULL); |
| if (image->debug != MagickFalse) |
| (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| if (SetImageStorageClass(image,DirectClass) == MagickFalse) |
| return(MagickFalse); |
| if (image->matte == MagickFalse) |
| (void) SetImageAlphaChannel(image,OpaqueAlphaChannel); |
| /* |
| Make image color transparent. |
| */ |
| status=MagickTrue; |
| progress=0; |
| exception=(&image->exception); |
| GetMagickPixelPacket(image,&zero); |
| image_view=AcquireCacheView(image); |
| #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| #pragma omp parallel for schedule(dynamic,4) shared(progress,status) |
| #endif |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| MagickPixelPacket |
| pixel; |
| |
| register IndexPacket |
| *restrict indexes; |
| |
| register ssize_t |
| x; |
| |
| register PixelPacket |
| *restrict q; |
| |
| if (status == MagickFalse) |
| continue; |
| q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception); |
| if (q == (PixelPacket *) NULL) |
| { |
| status=MagickFalse; |
| continue; |
| } |
| indexes=GetCacheViewAuthenticIndexQueue(image_view); |
| pixel=zero; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| SetMagickPixelPacket(image,q,indexes+x,&pixel); |
| if (IsMagickColorSimilar(&pixel,target) != invert) |
| q->opacity=opacity; |
| q++; |
| } |
| if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse) |
| status=MagickFalse; |
| if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| { |
| MagickBooleanType |
| proceed; |
| |
| #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| #pragma omp critical (MagickCore_TransparentPaintImage) |
| #endif |
| proceed=SetImageProgress(image,TransparentPaintImageTag,progress++, |
| image->rows); |
| if (proceed == MagickFalse) |
| status=MagickFalse; |
| } |
| } |
| image_view=DestroyCacheView(image_view); |
| return(status); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % T r a n s p a r e n t P a i n t I m a g e C h r o m a % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % TransparentPaintImageChroma() changes the opacity value associated with any |
| % pixel that matches color to the value defined by opacity. |
| % |
| % As there is one fuzz value for the all the channels, the |
| % TransparentPaintImage() API is not suitable for the operations like chroma, |
| % where the tolerance for similarity of two color component (RGB) can be |
| % different, Thus we define this method take two target pixels (one |
| % low and one hight) and all the pixels of an image which are lying between |
| % these two pixels are made transparent. |
| % |
| % The format of the TransparentPaintImage method is: |
| % |
| % MagickBooleanType TransparentPaintImage(Image *image, |
| % const MagickPixelPacket *low,const MagickPixelPacket *hight, |
| % const Quantum opacity,const MagickBooleanType invert) |
| % |
| % A description of each parameter follows: |
| % |
| % o image: the image. |
| % |
| % o low: the low target color. |
| % |
| % o high: the high target color. |
| % |
| % o opacity: the replacement opacity value. |
| % |
| % o invert: paint any pixel that does not match the target color. |
| % |
| */ |
| MagickExport MagickBooleanType TransparentPaintImageChroma(Image *image, |
| const MagickPixelPacket *low,const MagickPixelPacket *high, |
| const Quantum opacity,const MagickBooleanType invert) |
| { |
| #define TransparentPaintImageTag "Transparent/Image" |
| |
| CacheView |
| *image_view; |
| |
| ExceptionInfo |
| *exception; |
| |
| MagickBooleanType |
| status; |
| |
| MagickOffsetType |
| progress; |
| |
| ssize_t |
| y; |
| |
| assert(image != (Image *) NULL); |
| assert(image->signature == MagickSignature); |
| assert(high != (MagickPixelPacket *) NULL); |
| assert(low != (MagickPixelPacket *) NULL); |
| if (image->debug != MagickFalse) |
| (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| if (SetImageStorageClass(image,DirectClass) == MagickFalse) |
| return(MagickFalse); |
| if (image->matte == MagickFalse) |
| (void) SetImageAlphaChannel(image,ResetAlphaChannel); |
| /* |
| Make image color transparent. |
| */ |
| status=MagickTrue; |
| progress=0; |
| exception=(&image->exception); |
| image_view=AcquireCacheView(image); |
| #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| #pragma omp parallel for schedule(dynamic,4) shared(progress,status) |
| #endif |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| MagickBooleanType |
| match; |
| |
| MagickPixelPacket |
| pixel; |
| |
| register IndexPacket |
| *restrict indexes; |
| |
| register ssize_t |
| x; |
| |
| register PixelPacket |
| *restrict q; |
| |
| if (status == MagickFalse) |
| continue; |
| q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception); |
| if (q == (PixelPacket *) NULL) |
| { |
| status=MagickFalse; |
| continue; |
| } |
| indexes=GetCacheViewAuthenticIndexQueue(image_view); |
| GetMagickPixelPacket(image,&pixel); |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| SetMagickPixelPacket(image,q,indexes+x,&pixel); |
| match=((pixel.red >= low->red) && (pixel.red <= high->red) && |
| (pixel.green >= low->green) && (pixel.green <= high->green) && |
| (pixel.blue >= low->blue) && (pixel.blue <= high->blue)) ? |
| MagickTrue : MagickFalse; |
| if (match != invert) |
| q->opacity=opacity; |
| q++; |
| } |
| if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse) |
| status=MagickFalse; |
| if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| { |
| MagickBooleanType |
| proceed; |
| |
| #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| #pragma omp critical (MagickCore_TransparentPaintImageChroma) |
| #endif |
| proceed=SetImageProgress(image,TransparentPaintImageTag,progress++, |
| image->rows); |
| if (proceed == MagickFalse) |
| status=MagickFalse; |
| } |
| } |
| image_view=DestroyCacheView(image_view); |
| return(status); |
| } |