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if resampling fails, replace with invalid pixel

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This commit is contained in:
Cristy 2024-02-10 12:44:49 -05:00
parent 3be0fa779c
commit b0f6c05f67
1 changed files with 14 additions and 9 deletions
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23
MagickCore/distort.c
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@ -2863,16 +2863,21 @@ if ( d.x == 0.5 && d.y == 0.5 ) {
}
else {
/* resample the source image to find its correct color */
(void) ResamplePixelColor(resample_filter[id],s.x,s.y,&pixel,
status=ResamplePixelColor(resample_filter[id],s.x,s.y,&pixel,
exception);
/* if validity between 0.0 and 1.0 mix result with invalid pixel */
if ( validity < 1.0 ) {
/* Do a blend of sample color and invalid pixel */
/* should this be a 'Blend', or an 'Over' compose */
CompositePixelInfoBlend(&pixel,validity,&invalid,(1.0-validity),
&pixel);
}
SetPixelViaPixelInfo(distort_image,&pixel,q);
if (status == MagickFalse)
SetPixelViaPixelInfo(distort_image,&invalid,q);
else
{
/* if validity between 0.0 & 1.0 mix result with invalid pixel */
if ( validity < 1.0 ) {
/* Do a blend of sample color and invalid pixel */
/* should this be a 'Blend', or an 'Over' compose */
CompositePixelInfoBlend(&pixel,validity,&invalid,(1.0-validity),
&pixel);
}
SetPixelViaPixelInfo(distort_image,&pixel,q);
}
}
q+=GetPixelChannels(distort_image);
}