Loading...
Searching...
No Matches
paint.c
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% 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 %
% Cristy %
% July 1998 %
% %
% %
% Copyright @ 1999 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 %
% %
% https://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 "MagickCore/studio.h"
#include "MagickCore/artifact.h"
#include "MagickCore/channel.h"
#include "MagickCore/color.h"
#include "MagickCore/color-private.h"
#include "MagickCore/colorspace-private.h"
#include "MagickCore/composite.h"
#include "MagickCore/composite-private.h"
#include "MagickCore/draw.h"
#include "MagickCore/draw-private.h"
#include "MagickCore/exception.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/gem.h"
#include "MagickCore/gem-private.h"
#include "MagickCore/monitor.h"
#include "MagickCore/monitor-private.h"
#include "MagickCore/option.h"
#include "MagickCore/paint.h"
#include "MagickCore/pixel-accessor.h"
#include "MagickCore/resource_.h"
#include "MagickCore/statistic.h"
#include "MagickCore/string_.h"
#include "MagickCore/string-private.h"
#include "MagickCore/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 DrawInfo *draw_info,const PixelInfo target,
% const ssize_t x_offset,const ssize_t y_offset,
% const MagickBooleanType invert,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image: the image.
%
% 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.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport MagickBooleanType FloodfillPaintImage(Image *image,
const DrawInfo *draw_info,const PixelInfo *target,const ssize_t x_offset,
const ssize_t y_offset,const MagickBooleanType invert,
ExceptionInfo *exception)
{
#define MaxStacksize 524288UL
#define PushSegmentStack(up,left,right,delta) \
{ \
if (s >= (segment_stack+MaxStacksize)) \
{ \
segment_info=RelinquishVirtualMemory(segment_info); \
image_view=DestroyCacheView(image_view); \
floodplane_view=DestroyCacheView(floodplane_view); \
floodplane_image=DestroyImage(floodplane_image); \
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++; \
} \
} \
}
CacheView
*floodplane_view,
*image_view;
Image
*floodplane_image;
MagickBooleanType
skip,
status;
MemoryInfo
*segment_info;
PixelInfo
pixel;
SegmentInfo
*s;
SegmentInfo
*segment_stack;
ssize_t
offset,
start,
x1,
x2,
y;
/*
Check boundary conditions.
*/
assert(image != (Image *) NULL);
assert(image->signature == MagickCoreSignature);
assert(draw_info != (DrawInfo *) NULL);
assert(draw_info->signature == MagickCoreSignature);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
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,exception) == MagickFalse)
return(MagickFalse);
if (IsGrayColorspace(image->colorspace) != MagickFalse)
(void) SetImageColorspace(image,sRGBColorspace,exception);
if (((image->alpha_trait & BlendPixelTrait) == 0) &&
(draw_info->fill.alpha_trait != UndefinedPixelTrait))
(void) SetImageAlpha(image,OpaqueAlpha,exception);
/*
Set floodfill state.
*/
floodplane_image=CloneImage(image,0,0,MagickTrue,exception);
if (floodplane_image == (Image *) NULL)
return(MagickFalse);
floodplane_image->alpha_trait=UndefinedPixelTrait;
floodplane_image->colorspace=GRAYColorspace;
(void) QueryColorCompliance("#000",AllCompliance,
&floodplane_image->background_color,exception);
(void) SetImageBackgroundColor(floodplane_image,exception);
segment_info=AcquireVirtualMemory(MaxStacksize,sizeof(*segment_stack));
if (segment_info == (MemoryInfo *) NULL)
{
floodplane_image=DestroyImage(floodplane_image);
ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed",
image->filename);
}
segment_stack=(SegmentInfo *) GetVirtualMemoryBlob(segment_info);
/*
Push initial segment on stack.
*/
status=MagickTrue;
start=0;
s=segment_stack;
GetPixelInfo(image,&pixel);
image_view=AcquireVirtualCacheView(image,exception);
floodplane_view=AcquireAuthenticCacheView(floodplane_image,exception);
PushSegmentStack(y_offset,x_offset,x_offset,1);
PushSegmentStack(y_offset+1,x_offset,x_offset,-1);
while (s > segment_stack)
{
const Quantum
*magick_restrict p;
Quantum
*magick_restrict q;
ssize_t
x;
/*
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=GetCacheViewVirtualPixels(image_view,0,y,(size_t) (x1+1),1,exception);
q=GetCacheViewAuthenticPixels(floodplane_view,0,y,(size_t) (x1+1),1,
exception);
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
break;
p+=(ptrdiff_t) x1*(ssize_t) GetPixelChannels(image);
q+=(ptrdiff_t) x1*(ssize_t) GetPixelChannels(floodplane_image);
for (x=x1; x >= 0; x--)
{
if (GetPixelGray(floodplane_image,q) != 0)
break;
GetPixelInfoPixel(image,p,&pixel);
if (IsFuzzyEquivalencePixelInfo(&pixel,target) == invert)
break;
SetPixelGray(floodplane_image,QuantumRange,q);
p-=(ptrdiff_t)GetPixelChannels(image);
q-=GetPixelChannels(floodplane_image);
}
if (SyncCacheViewAuthenticPixels(floodplane_view,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=GetCacheViewVirtualPixels(image_view,x,y,(size_t)
((ssize_t) image->columns-x),1,exception);
q=GetCacheViewAuthenticPixels(floodplane_view,x,y,(size_t)
((ssize_t) image->columns-x),1,exception);
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
break;
for ( ; x < (ssize_t) image->columns; x++)
{
if (GetPixelGray(floodplane_image,q) != 0)
break;
GetPixelInfoPixel(image,p,&pixel);
if (IsFuzzyEquivalencePixelInfo(&pixel,target) == invert)
break;
SetPixelGray(floodplane_image,QuantumRange,q);
p+=(ptrdiff_t) GetPixelChannels(image);
q+=(ptrdiff_t) GetPixelChannels(floodplane_image);
}
status=SyncCacheViewAuthenticPixels(floodplane_view,exception);
if (status == 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=GetCacheViewVirtualPixels(image_view,x,y,(size_t) (x2-x+1),1,
exception);
q=GetCacheViewAuthenticPixels(floodplane_view,x,y,(size_t) (x2-x+1),1,
exception);
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
break;
for ( ; x <= x2; x++)
{
if (GetPixelGray(floodplane_image,q) != 0)
break;
GetPixelInfoPixel(image,p,&pixel);
if (IsFuzzyEquivalencePixelInfo(&pixel,target) != invert)
break;
p+=(ptrdiff_t) GetPixelChannels(image);
q+=(ptrdiff_t) GetPixelChannels(floodplane_image);
}
}
start=x;
} while (x <= x2);
}
status=MagickTrue;
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp parallel for schedule(static) shared(status) \
magick_number_threads(floodplane_image,image,image->rows,2)
#endif
for (y=0; y < (ssize_t) image->rows; y++)
{
const Quantum
*magick_restrict p;
Quantum
*magick_restrict q;
ssize_t
x;
/*
Tile fill color onto floodplane.
*/
if (status == MagickFalse)
continue;
p=GetCacheViewVirtualPixels(floodplane_view,0,y,image->columns,1,exception);
q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
{
status=MagickFalse;
continue;
}
for (x=0; x < (ssize_t) image->columns; x++)
{
if (GetPixelGray(floodplane_image,p) != 0)
{
PixelInfo
fill_color;
GetFillColor(draw_info,x,y,&fill_color,exception);
if ((image->channel_mask & RedChannel) != 0)
SetPixelRed(image,(Quantum) fill_color.red,q);
if ((image->channel_mask & GreenChannel) != 0)
SetPixelGreen(image,(Quantum) fill_color.green,q);
if ((image->channel_mask & BlueChannel) != 0)
SetPixelBlue(image,(Quantum) fill_color.blue,q);
if ((image->channel_mask & BlackChannel) != 0)
SetPixelBlack(image,(Quantum) fill_color.black,q);
if (((image->channel_mask & AlphaChannel) != 0) &&
((image->alpha_trait & BlendPixelTrait) != 0))
SetPixelAlpha(image,(Quantum) fill_color.alpha,q);
}
p+=(ptrdiff_t) GetPixelChannels(floodplane_image);
q+=(ptrdiff_t) GetPixelChannels(image);
}
if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
status=MagickFalse;
}
floodplane_view=DestroyCacheView(floodplane_view);
image_view=DestroyCacheView(image_view);
segment_info=RelinquishVirtualMemory(segment_info);
floodplane_image=DestroyImage(floodplane_image);
return(status);
}
␌
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
+ 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 transition.
%
% The format of the GradientImage method is:
%
% MagickBooleanType GradientImage(Image *image,const GradientType type,
% const SpreadMethod method,const PixelInfo *start_color,
% const PixelInfo *stop_color,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image: the image.
%
% o type: the gradient type: linear or radial.
%
% o spread: the gradient spread method: pad, reflect, or repeat.
%
% o start_color: the start color.
%
% o stop_color: the stop color.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport MagickBooleanType GradientImage(Image *image,
const GradientType type,const SpreadMethod method,const StopInfo *stops,
const size_t number_stops,ExceptionInfo *exception)
{
const char
*artifact;
DrawInfo
*draw_info;
GradientInfo
*gradient;
MagickBooleanType
status;
/*
Set gradient start-stop end points.
*/
assert(image != (const Image *) NULL);
assert(image->signature == MagickCoreSignature);
assert(stops != (const StopInfo *) NULL);
assert(number_stops > 0);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
draw_info=AcquireDrawInfo();
gradient=(&draw_info->gradient);
gradient->type=type;
gradient->bounding_box.width=image->columns;
gradient->bounding_box.height=image->rows;
artifact=GetImageArtifact(image,"gradient:bounding-box");
if (artifact != (const char *) NULL)
(void) ParseAbsoluteGeometry(artifact,&gradient->bounding_box);
gradient->gradient_vector.x2=(double) image->columns-1;
gradient->gradient_vector.y2=(double) image->rows-1;
artifact=GetImageArtifact(image,"gradient:direction");
if (artifact != (const char *) NULL)
{
GravityType
direction;
direction=(GravityType) ParseCommandOption(MagickGravityOptions,
MagickFalse,artifact);
switch (direction)
{
case NorthWestGravity:
{
gradient->gradient_vector.x1=(double) image->columns-1;
gradient->gradient_vector.y1=(double) image->rows-1;
gradient->gradient_vector.x2=0.0;
gradient->gradient_vector.y2=0.0;
break;
}
case NorthGravity:
{
gradient->gradient_vector.x1=0.0;
gradient->gradient_vector.y1=(double) image->rows-1;
gradient->gradient_vector.x2=0.0;
gradient->gradient_vector.y2=0.0;
break;
}
case NorthEastGravity:
{
gradient->gradient_vector.x1=0.0;
gradient->gradient_vector.y1=(double) image->rows-1;
gradient->gradient_vector.x2=(double) image->columns-1;
gradient->gradient_vector.y2=0.0;
break;
}
case WestGravity:
{
gradient->gradient_vector.x1=(double) image->columns-1;
gradient->gradient_vector.y1=0.0;
gradient->gradient_vector.x2=0.0;
gradient->gradient_vector.y2=0.0;
break;
}
case EastGravity:
{
gradient->gradient_vector.x1=0.0;
gradient->gradient_vector.y1=0.0;
gradient->gradient_vector.x2=(double) image->columns-1;
gradient->gradient_vector.y2=0.0;
break;
}
case SouthWestGravity:
{
gradient->gradient_vector.x1=(double) image->columns-1;
gradient->gradient_vector.y1=0.0;
gradient->gradient_vector.x2=0.0;
gradient->gradient_vector.y2=(double) image->rows-1;
break;
}
case SouthGravity:
{
gradient->gradient_vector.x1=0.0;
gradient->gradient_vector.y1=0.0;
gradient->gradient_vector.x2=0.0;
gradient->gradient_vector.y2=(double) image->rows-1;
break;
}
case SouthEastGravity:
{
gradient->gradient_vector.x1=0.0;
gradient->gradient_vector.y1=0.0;
gradient->gradient_vector.x2=(double) image->columns-1;
gradient->gradient_vector.y2=(double) image->rows-1;
break;
}
default:
break;
}
}
artifact=GetImageArtifact(image,"gradient:angle");
if (artifact != (const char *) NULL)
gradient->angle=StringToDouble(artifact,(char **) NULL);
artifact=GetImageArtifact(image,"gradient:vector");
if (artifact != (const char *) NULL)
(void) MagickSscanf(artifact,"%lf%*[ ,]%lf%*[ ,]%lf%*[ ,]%lf",
&gradient->gradient_vector.x1,&gradient->gradient_vector.y1,
&gradient->gradient_vector.x2,&gradient->gradient_vector.y2);
if ((GetImageArtifact(image,"gradient:angle") == (const char *) NULL) &&
(GetImageArtifact(image,"gradient:direction") == (const char *) NULL) &&
(GetImageArtifact(image,"gradient:extent") == (const char *) NULL) &&
(GetImageArtifact(image,"gradient:vector") == (const char *) NULL))
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;
artifact=GetImageArtifact(image,"gradient:center");
if (artifact != (const char *) NULL)
(void) MagickSscanf(artifact,"%lf%*[ ,]%lf",&gradient->center.x,
&gradient->center.y);
artifact=GetImageArtifact(image,"gradient:angle");
if ((type == LinearGradient) && (artifact != (const char *) NULL))
{
double
sine,
cosine,
distance;
/*
Reference https://drafts.csswg.org/css-images-3/#linear-gradients.
*/
sine=sin((double) DegreesToRadians(gradient->angle-90.0));
cosine=cos((double) DegreesToRadians(gradient->angle-90.0));
distance=fabs((double) (image->columns-1.0)*cosine)+
fabs((double) (image->rows-1.0)*sine);
gradient->gradient_vector.x1=0.5*((image->columns-1.0)-distance*cosine);
gradient->gradient_vector.y1=0.5*((image->rows-1.0)-distance*sine);
gradient->gradient_vector.x2=0.5*((image->columns-1.0)+distance*cosine);
gradient->gradient_vector.y2=0.5*((image->rows-1.0)+distance*sine);
}
gradient->radii.x=(double) MagickMax((image->columns-1.0),(image->rows-1.0))/
2.0;
gradient->radii.y=gradient->radii.x;
artifact=GetImageArtifact(image,"gradient:extent");
if (artifact != (const char *) NULL)
{
if (LocaleCompare(artifact,"Circle") == 0)
{
gradient->radii.x=(double) MagickMax((image->columns-1.0),
(image->rows-1.0))/2.0;
gradient->radii.y=gradient->radii.x;
}
if (LocaleCompare(artifact,"Diagonal") == 0)
{
gradient->radii.x=(double) (sqrt((double) (image->columns-1.0)*
(image->columns-1.0)+(image->rows-1.0)*(image->rows-1.0)))/2.0;
gradient->radii.y=gradient->radii.x;
}
if (LocaleCompare(artifact,"Ellipse") == 0)
{
gradient->radii.x=(double) (image->columns-1.0)/2.0;
gradient->radii.y=(double) (image->rows-1.0)/2.0;
}
if (LocaleCompare(artifact,"Maximum") == 0)
{
gradient->radii.x=(double) MagickMax((image->columns-1.0),
(image->rows-1.0))/2.0;
gradient->radii.y=gradient->radii.x;
}
if (LocaleCompare(artifact,"Minimum") == 0)
{
gradient->radii.x=(double) (MagickMin((image->columns-1.0),
(image->rows-1.0)))/2.0;
gradient->radii.y=gradient->radii.x;
}
}
artifact=GetImageArtifact(image,"gradient:radii");
if (artifact != (const char *) NULL)
(void) MagickSscanf(artifact,"%lf%*[ ,]%lf",&gradient->radii.x,
&gradient->radii.y);
gradient->radius=MagickMax(gradient->radii.x,gradient->radii.y);
gradient->spread=method;
/*
Define the gradient to fill between the stops.
*/
gradient->number_stops=number_stops;
gradient->stops=(StopInfo *) AcquireQuantumMemory(gradient->number_stops,
sizeof(*gradient->stops));
if (gradient->stops == (StopInfo *) NULL)
ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed",
image->filename);
(void) memcpy(gradient->stops,stops,(size_t) number_stops*sizeof(*stops));
/*
Draw a gradient on the image.
*/
status=DrawGradientImage(image,draw_info,exception);
draw_info=DestroyDrawInfo(draw_info);
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,
% const double sigma,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image: the image.
%
% o radius: the radius of the circular neighborhood.
%
% o sigma: the standard deviation of the Gaussian, in pixels.
%
% o exception: return any errors or warnings in this structure.
%
*/
static size_t **DestroyHistogramTLS(size_t **histogram)
{
ssize_t
i;
assert(histogram != (size_t **) NULL);
for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
if (histogram[i] != (size_t *) NULL)
histogram[i]=(size_t *) RelinquishMagickMemory(histogram[i]);
histogram=(size_t **) RelinquishMagickMemory(histogram);
return(histogram);
}
static size_t **AcquireHistogramTLS(const size_t count)
{
ssize_t
i;
size_t
**histogram,
number_threads;
number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
histogram=(size_t **) AcquireQuantumMemory(number_threads,sizeof(*histogram));
if (histogram == (size_t **) NULL)
return((size_t **) NULL);
(void) memset(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(DestroyHistogramTLS(histogram));
}
return(histogram);
}
MagickExport Image *OilPaintImage(const Image *image,const double radius,
const double sigma,ExceptionInfo *exception)
{
#define NumberPaintBins 256
#define OilPaintImageTag "OilPaint/Image"
CacheView
*image_view,
*paint_view;
Image
*linear_image,
*paint_image;
MagickBooleanType
status;
MagickOffsetType
progress;
size_t
**histograms,
width;
ssize_t
center,
y;
/*
Initialize painted image attributes.
*/
assert(image != (const Image *) NULL);
assert(image->signature == MagickCoreSignature);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickCoreSignature);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
width=GetOptimalKernelWidth2D(radius,sigma);
linear_image=CloneImage(image,0,0,MagickTrue,exception);
paint_image=CloneImage(image,0,0,MagickTrue,exception);
if ((linear_image == (Image *) NULL) || (paint_image == (Image *) NULL))
{
if (linear_image != (Image *) NULL)
linear_image=DestroyImage(linear_image);
if (paint_image != (Image *) NULL)
linear_image=DestroyImage(paint_image);
return((Image *) NULL);
}
if (SetImageStorageClass(paint_image,DirectClass,exception) == MagickFalse)
{
linear_image=DestroyImage(linear_image);
paint_image=DestroyImage(paint_image);
return((Image *) NULL);
}
histograms=AcquireHistogramTLS(NumberPaintBins);
if (histograms == (size_t **) NULL)
{
linear_image=DestroyImage(linear_image);
paint_image=DestroyImage(paint_image);
ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
}
/*
Oil paint image.
*/
status=MagickTrue;
progress=0;
center=(ssize_t) (GetPixelChannels(linear_image)*(linear_image->columns+
width)*(width/2L)+GetPixelChannels(linear_image)*(width/2L));
image_view=AcquireVirtualCacheView(linear_image,exception);
paint_view=AcquireAuthenticCacheView(paint_image,exception);
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp parallel for schedule(static) shared(progress,status) \
magick_number_threads(linear_image,paint_image,linear_image->rows,1)
#endif
for (y=0; y < (ssize_t) linear_image->rows; y++)
{
const Quantum
*magick_restrict p;
Quantum
*magick_restrict q;
size_t
*histogram;
ssize_t
x;
if (status == MagickFalse)
continue;
p=GetCacheViewVirtualPixels(image_view,-((ssize_t) width/2L),y-(ssize_t)
(width/2L),linear_image->columns+width,width,exception);
q=QueueCacheViewAuthenticPixels(paint_view,0,y,paint_image->columns,1,
exception);
if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
{
status=MagickFalse;
continue;
}
histogram=histograms[GetOpenMPThreadId()];
for (x=0; x < (ssize_t) linear_image->columns; x++)
{
ssize_t
i,
u;
size_t
count;
ssize_t
j,
k,
n,
v;
/*
Assign most frequent color.
*/
k=0;
j=0;
count=0;
(void) memset(histogram,0,NumberPaintBins* sizeof(*histogram));
for (v=0; v < (ssize_t) width; v++)
{
for (u=0; u < (ssize_t) width; u++)
{
n=(ssize_t) ScaleQuantumToChar(ClampToQuantum(GetPixelIntensity(
linear_image,p+(ssize_t) GetPixelChannels(linear_image)*(u+k))));
histogram[n]++;
if (histogram[n] > count)
{
j=k+u;
count=histogram[n];
}
}
k+=(ssize_t) (linear_image->columns+width);
}
for (i=0; i < (ssize_t) GetPixelChannels(linear_image); i++)
{
PixelChannel channel = GetPixelChannelChannel(linear_image,i);
PixelTrait traits = GetPixelChannelTraits(linear_image,channel);
PixelTrait paint_traits=GetPixelChannelTraits(paint_image,channel);
if ((traits == UndefinedPixelTrait) ||
(paint_traits == UndefinedPixelTrait))
continue;
if ((paint_traits & CopyPixelTrait) != 0)
{
SetPixelChannel(paint_image,channel,p[center+i],q);
continue;
}
SetPixelChannel(paint_image,channel,p[j*(ssize_t)
GetPixelChannels(linear_image)+i],q);
}
p+=(ptrdiff_t) GetPixelChannels(linear_image);
q+=(ptrdiff_t) GetPixelChannels(paint_image);
}
if (SyncCacheViewAuthenticPixels(paint_view,exception) == MagickFalse)
status=MagickFalse;
if (linear_image->progress_monitor != (MagickProgressMonitor) NULL)
{
MagickBooleanType
proceed;
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp atomic
#endif
progress++;
proceed=SetImageProgress(linear_image,OilPaintImageTag,progress,
linear_image->rows);
if (proceed == MagickFalse)
status=MagickFalse;
}
}
paint_view=DestroyCacheView(paint_view);
image_view=DestroyCacheView(image_view);
histograms=DestroyHistogramTLS(histograms);
linear_image=DestroyImage(linear_image);
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 argument.
%
% 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 PixelInfo *target,
% const PixelInfo *fill,const MagickBooleanType invert,
% ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image: the image.
%
% 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.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport MagickBooleanType OpaquePaintImage(Image *image,
const PixelInfo *target,const PixelInfo *fill,const MagickBooleanType invert,
ExceptionInfo *exception)
{
#define OpaquePaintImageTag "Opaque/Image"
CacheView
*image_view;
MagickBooleanType
status;
MagickOffsetType
progress;
PixelInfo
conform_fill,
conform_target,
zero;
ssize_t
y;
assert(image != (Image *) NULL);
assert(image->signature == MagickCoreSignature);
assert(target != (PixelInfo *) NULL);
assert(fill != (PixelInfo *) NULL);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
return(MagickFalse);
ConformPixelInfo(image,fill,&conform_fill,exception);
ConformPixelInfo(image,target,&conform_target,exception);
/*
Make image color opaque.
*/
status=MagickTrue;
progress=0;
GetPixelInfo(image,&zero);
image_view=AcquireAuthenticCacheView(image,exception);
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp parallel for schedule(static) shared(progress,status) \
magick_number_threads(image,image,image->rows,1)
#endif
for (y=0; y < (ssize_t) image->rows; y++)
{
PixelInfo
pixel;
Quantum
*magick_restrict q;
ssize_t
x;
if (status == MagickFalse)
continue;
q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
if (q == (Quantum *) NULL)
{
status=MagickFalse;
continue;
}
pixel=zero;
for (x=0; x < (ssize_t) image->columns; x++)
{
GetPixelInfoPixel(image,q,&pixel);
if (IsFuzzyEquivalencePixelInfo(&pixel,&conform_target) != invert)
{
PixelTrait
traits;
traits=GetPixelChannelTraits(image,RedPixelChannel);
if ((traits & UpdatePixelTrait) != 0)
SetPixelRed(image,(Quantum) conform_fill.red,q);
traits=GetPixelChannelTraits(image,GreenPixelChannel);
if ((traits & UpdatePixelTrait) != 0)
SetPixelGreen(image,(Quantum) conform_fill.green,q);
traits=GetPixelChannelTraits(image,BluePixelChannel);
if ((traits & UpdatePixelTrait) != 0)
SetPixelBlue(image,(Quantum) conform_fill.blue,q);
traits=GetPixelChannelTraits(image,BlackPixelChannel);
if ((traits & UpdatePixelTrait) != 0)
SetPixelBlack(image,(Quantum) conform_fill.black,q);
traits=GetPixelChannelTraits(image,AlphaPixelChannel);
if ((traits & UpdatePixelTrait) != 0)
SetPixelAlpha(image,(Quantum) conform_fill.alpha,q);
}
q+=(ptrdiff_t) GetPixelChannels(image);
}
if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
status=MagickFalse;
if (image->progress_monitor != (MagickProgressMonitor) NULL)
{
MagickBooleanType
proceed;
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp atomic
#endif
progress++;
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 PixelInfo *target,const Quantum opacity,
% const MagickBooleanType invert,ExceptionInfo *exception)
%
% 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.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport MagickBooleanType TransparentPaintImage(Image *image,
const PixelInfo *target,const Quantum opacity,const MagickBooleanType invert,
ExceptionInfo *exception)
{
#define TransparentPaintImageTag "Transparent/Image"
CacheView
*image_view;
MagickBooleanType
status;
MagickOffsetType
progress;
PixelInfo
zero;
ssize_t
y;
assert(image != (Image *) NULL);
assert(image->signature == MagickCoreSignature);
assert(target != (PixelInfo *) NULL);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
return(MagickFalse);
if ((image->alpha_trait & BlendPixelTrait) == 0)
(void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
/*
Make image color transparent.
*/
status=MagickTrue;
progress=0;
GetPixelInfo(image,&zero);
image_view=AcquireAuthenticCacheView(image,exception);
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp parallel for schedule(static) shared(progress,status) \
magick_number_threads(image,image,image->rows,1)
#endif
for (y=0; y < (ssize_t) image->rows; y++)
{
PixelInfo
pixel;
ssize_t
x;
Quantum
*magick_restrict q;
if (status == MagickFalse)
continue;
q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
if (q == (Quantum *) NULL)
{
status=MagickFalse;
continue;
}
pixel=zero;
for (x=0; x < (ssize_t) image->columns; x++)
{
GetPixelInfoPixel(image,q,&pixel);
if (IsFuzzyEquivalencePixelInfo(&pixel,target) != invert)
SetPixelAlpha(image,opacity,q);
q+=(ptrdiff_t) GetPixelChannels(image);
}
if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
status=MagickFalse;
if (image->progress_monitor != (MagickProgressMonitor) NULL)
{
MagickBooleanType
proceed;
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp atomic
#endif
progress++;
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, TransparentPaintImage()
% 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 to take two target pixels (one low and one high) and all the
% pixels of an image which are lying between these two pixels are made
% transparent.
%
% The format of the TransparentPaintImageChroma method is:
%
% MagickBooleanType TransparentPaintImageChroma(Image *image,
% const PixelInfo *low,const PixelInfo *high,const Quantum opacity,
% const MagickBooleanType invert,ExceptionInfo *exception)
%
% 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.
%
% o exception: return any errors or warnings in this structure.
%
*/
MagickExport MagickBooleanType TransparentPaintImageChroma(Image *image,
const PixelInfo *low,const PixelInfo *high,const Quantum opacity,
const MagickBooleanType invert,ExceptionInfo *exception)
{
#define TransparentPaintImageTag "Transparent/Image"
CacheView
*image_view;
MagickBooleanType
status;
MagickOffsetType
progress;
ssize_t
y;
assert(image != (Image *) NULL);
assert(image->signature == MagickCoreSignature);
assert(high != (PixelInfo *) NULL);
assert(low != (PixelInfo *) NULL);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
return(MagickFalse);
if ((image->alpha_trait & BlendPixelTrait) == 0)
(void) SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
/*
Make image color transparent.
*/
status=MagickTrue;
progress=0;
image_view=AcquireAuthenticCacheView(image,exception);
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp parallel for schedule(static) shared(progress,status) \
magick_number_threads(image,image,image->rows,1)
#endif
for (y=0; y < (ssize_t) image->rows; y++)
{
MagickBooleanType
match;
PixelInfo
pixel;
Quantum
*magick_restrict q;
ssize_t
x;
if (status == MagickFalse)
continue;
q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
if (q == (Quantum *) NULL)
{
status=MagickFalse;
continue;
}
GetPixelInfo(image,&pixel);
for (x=0; x < (ssize_t) image->columns; x++)
{
GetPixelInfoPixel(image,q,&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)
SetPixelAlpha(image,opacity,q);
q+=(ptrdiff_t) GetPixelChannels(image);
}
if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
status=MagickFalse;
if (image->progress_monitor != (MagickProgressMonitor) NULL)
{
MagickBooleanType
proceed;
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp atomic
#endif
progress++;
proceed=SetImageProgress(image,TransparentPaintImageTag,progress,
image->rows);
if (proceed == MagickFalse)
status=MagickFalse;
}
}
image_view=DestroyCacheView(image_view);
return(status);
}
_CacheView
Definition cache-view.c:66
_DrawInfo
Definition draw.h:210
_ExceptionInfo
Definition exception.h:102
_GradientInfo
Definition draw.h:156
_Image
Definition image.h:132
_MemoryInfo
Definition memory.c:164
_PixelInfo
Definition pixel.h:182
_SegmentInfo
Definition image.h:85
_StopInfo
Definition draw.h:147