/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% 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 262144UL
#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++; \
} \
} \
}
CacheView
*floodplane_view,
*image_view;
Image
*floodplane_image;
MagickBooleanType
skip,
status;
MemoryInfo
*segment_info;
PixelInfo
fill_color,
pixel;
register SegmentInfo
*s;
SegmentInfo
*segment_stack;
ssize_t
offset,
start,
x,
x1,
x2,
y;
/*
Check boundary conditions.
*/
assert(image != (Image *) NULL);
assert(image->signature == MagickCoreSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
assert(draw_info != (DrawInfo *) NULL);
assert(draw_info->signature == MagickCoreSignature);
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 == UndefinedPixelTrait) &&
(draw_info->fill.alpha_trait != UndefinedPixelTrait))
(void) SetImageAlpha(image,OpaqueAlpha,exception);
/*
Set floodfill state.
*/
floodplane_image=CloneImage(image,image->columns,image->rows,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;
x=x_offset;
y=y_offset;
start=0;
s=segment_stack;
PushSegmentStack(y,x,x,1);
PushSegmentStack(y+1,x,x,-1);
GetPixelInfo(image,&pixel);
image_view=AcquireVirtualCacheView(image,exception);
floodplane_view=AcquireAuthenticCacheView(floodplane_image,exception);
while (s > segment_stack)
{
register const Quantum
*restrict p;
register Quantum
*restrict q;
register 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+=x1*GetPixelChannels(image);
q+=x1*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-=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,image->columns-x,1,
exception);
q=GetCacheViewAuthenticPixels(floodplane_view,x,y,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+=GetPixelChannels(image);
q+=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+=GetPixelChannels(image);
q+=GetPixelChannels(floodplane_image);
}
}
start=x;
} while (x <= x2);
}
status=MagickTrue;
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp parallel for schedule(static,4) shared(status) \
magick_threads(floodplane_image,image,floodplane_image->rows,1)
#endif
for (y=0; y < (ssize_t) image->rows; y++)
{
register const Quantum
*restrict p;
register Quantum
*restrict q;
register 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)
{
(void) GetFillColor(draw_info,x,y,&fill_color,exception);
SetPixelViaPixelInfo(image,&fill_color,q);
}
p+=GetPixelChannels(floodplane_image);
q+=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);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% 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++; \
} \
} \
}
CacheView
*floodplane_view,
*image_view;
ExceptionInfo
*exception;
Image
*floodplane_image;
MagickBooleanType
skip;
MagickPixelPacket
fill,
pixel;
PixelPacket
fill_color;
register SegmentInfo
*s;
SegmentInfo
*segment_stack;
ssize_t
offset,
start,
x,
x1,
x2,
y;
/*
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 (IsGrayColorspace(image->colorspace) != MagickFalse)
(void) TransformImageColorspace(image,sRGBColorspace);
if ((image->matte == MagickFalse) &&
(draw_info->fill.opacity != OpaqueOpacity))
(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);
image_view=AcquireVirtualCacheView(image,exception);
floodplane_view=AcquireAuthenticCacheView(floodplane_image,exception);
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=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 PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
break;
indexes=GetCacheViewVirtualIndexQueue(image_view);
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 (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,image->columns-x,1,
exception);
q=GetCacheViewAuthenticPixels(floodplane_view,x,y,
image->columns-x,1,exception);
if ((p == (const PixelPacket *) NULL) ||
(q == (PixelPacket *) NULL))
break;
indexes=GetCacheViewVirtualIndexQueue(image_view);
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 (SyncCacheViewAuthenticPixels(floodplane_view,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=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 PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
break;
indexes=GetCacheViewVirtualIndexQueue(image_view);
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=GetCacheViewVirtualPixels(floodplane_view,0,y,image->columns,1,
exception);
q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
break;
indexes=GetCacheViewAuthenticIndexQueue(image_view);
for (x=0; x < (ssize_t) image->columns; x++)
{
if (GetPixelOpacity(p) != 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)
SetPixelRed(q,ClampToQuantum(fill.red));
if ((channel & GreenChannel) != 0)
SetPixelGreen(q,ClampToQuantum(fill.green));
if ((channel & BlueChannel) != 0)
SetPixelBlue(q,ClampToQuantum(fill.blue));
if ((channel & OpacityChannel) != 0)
SetPixelOpacity(q,ClampToQuantum(fill.opacity));
if (((channel & IndexChannel) != 0) &&
(image->colorspace == CMYKColorspace))
SetPixelIndex(indexes+x,ClampToQuantum(fill.index));
}
p++;
q++;
}
if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
break;
}
floodplane_view=DestroyCacheView(floodplane_view);
image_view=DestroyCacheView(image_view);
segment_stack=(SegmentInfo *) RelinquishMagickMemory(segment_stack);
floodplane_image=DestroyImage(floodplane_image);
return(y == (ssize_t) image->rows ? MagickTrue : MagickFalse);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% P a i n t F l o o d f i l l I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% PaintFloodfill() 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 PaintFloodfillImage method is:
%
% MagickBooleanType PaintFloodfillImage(Image *image,
% const ChannelType channel,const MagickPixelPacket target,
% const long x_offset,const long y_offset,const DrawInfo *draw_info,
% const PaintMethod method)
%
% 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 x_offset,y_offset: The starting location of the operation.
%
% o draw_info: The draw info.
%
% o method: Choose either FloodfillMethod or FillToBorderMethod.
%
*/
MagickExport MagickBooleanType PaintFloodfillImage(Image *image,
const ChannelType channel,const MagickPixelPacket *target,
const long x_offset,const long y_offset,const DrawInfo *draw_info,
const PaintMethod method)
{
#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)) < (long) image->rows)) \
{ \
s->x1=(double) (left); \
s->y1=(double) (up); \
s->x2=(double) (right); \
s->y2=(double) (delta); \
s++; \
} \
} \
}
Image
*floodplane_image;
long
offset,
start,
x1,
x2,
y;
MagickBooleanType
skip;
MagickPixelPacket
fill,
pixel;
PixelPacket
fill_color;
register const PixelPacket
*p;
register IndexPacket
*indexes;
register long
x;
register PixelPacket
*q;
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 >= (long) image->columns))
return(MagickFalse);
if ((y_offset < 0) || (y_offset >= (long) image->rows))
return(MagickFalse);
if (SetImageStorageClass(image,DirectClass) == MagickFalse)
return(MagickFalse);
if (image->matte == MagickFalse)
(void) SetImageOpacity(image,OpaqueOpacity);
/*
Set floodfill state.
*/
floodplane_image=CloneImage(image,image->columns,image->rows,MagickTrue,
&image->exception);
if (floodplane_image == (Image *) NULL)
return(MagickFalse);
(void) SetImageOpacity(floodplane_image,OpaqueOpacity);
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.
*/
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)
{
/*
Pop segment off stack.
*/
s--;
x1=(long) s->x1;
x2=(long) s->x2;
offset=(long) s->y2;
y=(long) s->y1+offset;
/*
Recolor neighboring pixels.
*/
p=AcquireImagePixels(image,0,y,(unsigned long) (x1+1),1,&image->exception);
q=GetImagePixels(floodplane_image,0,y,(unsigned long) (x1+1),1);
if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
break;
indexes=GetIndexes(image);
p+=x1;
q+=x1;
for (x=x1; x >= 0; x--)
{
if (q->opacity == (Quantum) TransparentOpacity)
break;
SetMagickPixelPacket(image,p,indexes+x,&pixel);
if (method == FloodfillMethod)
{
if (IsMagickColorSimilar(&pixel,target) == MagickFalse)
break;
}
else
if (IsMagickColorSimilar(&pixel,target) != MagickFalse)
break;
q->opacity=(Quantum) TransparentOpacity;
p--;
q--;
}
if (SyncImagePixels(floodplane_image) == 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 < (long) image->columns)
{
p=AcquireImagePixels(image,x,y,image->columns-x,1,
&image->exception);
q=GetImagePixels(floodplane_image,x,y,image->columns-x,1);
if ((p == (const PixelPacket *) NULL) ||
(q == (PixelPacket *) NULL))
break;
indexes=GetIndexes(image);
for ( ; x < (long) image->columns; x++)
{
if (q->opacity == (Quantum) TransparentOpacity)
break;
SetMagickPixelPacket(image,p,indexes+x,&pixel);
if (method == FloodfillMethod)
{
if (IsMagickColorSimilar(&pixel,target) == MagickFalse)
break;
}
else
if (IsMagickColorSimilar(&pixel,target) != MagickFalse)
break;
q->opacity=(Quantum) TransparentOpacity;
p++;
q++;
}
if (SyncImagePixels(floodplane_image) == 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=AcquireImagePixels(image,x,y,(unsigned long) (x2-x+1),1,
&image->exception);
q=GetImagePixels(floodplane_image,x,y,(unsigned long) (x2-x+1),1);
if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
break;
indexes=GetIndexes(image);
for ( ; x <= x2; x++)
{
if (q->opacity == (Quantum) TransparentOpacity)
break;
SetMagickPixelPacket(image,p,indexes+x,&pixel);
if (method == FloodfillMethod)
{
if (IsMagickColorSimilar(&pixel,target) != MagickFalse)
break;
}
else
if (IsMagickColorSimilar(&pixel,target) == MagickFalse)
break;
p++;
q++;
}
}
start=x;
} while (x <= x2);
}
for (y=0; y < (long) image->rows; y++)
{
/*
Tile fill color onto floodplane.
*/
p=AcquireImagePixels(floodplane_image,0,y,image->columns,1,
&image->exception);
q=GetImagePixels(image,0,y,image->columns,1);
if ((p == (const PixelPacket *) NULL) || (q == (PixelPacket *) NULL))
break;
indexes=GetIndexes(image);
for (x=0; x < (long) image->columns; x++)
{
if (p->opacity != OpaqueOpacity)
{
fill_color=GetFillColor(draw_info,x,y);
SetMagickPixelPacket(image,&fill_color,(IndexPacket *) NULL,&fill);
if (image->colorspace == CMYKColorspace)
ConvertRGBToCMYK(&fill);
if ((channel & RedChannel) != 0)
q->red=RoundToQuantum(fill.red);
if ((channel & GreenChannel) != 0)
q->green=RoundToQuantum(fill.green);
if ((channel & BlueChannel) != 0)
q->blue=RoundToQuantum(fill.blue);
if ((channel & OpacityChannel) != 0)
q->opacity=RoundToQuantum(fill.opacity);
if (((channel & IndexChannel) != 0) &&
(image->colorspace == CMYKColorspace))
indexes[x]=RoundToQuantum(fill.index);
}
p++;
q++;
}
if (SyncImagePixels(image) == MagickFalse)
break;
}
segment_stack=(SegmentInfo *) RelinquishMagickMemory(segment_stack);
floodplane_image=DestroyImage(floodplane_image);
return(y == (long) image->rows ? MagickTrue : MagickFalse);
}
