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Add top/left offset support to overlayWith operation (#473)

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This commit is contained in:
Rahul Nanwani
2016-07-05 14:42:02 +05:30
committed by Lovell Fuller
parent a5d85b8a54
commit 278273b5c3
15 changed files with 338 additions and 41 deletions
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18
src/operations.h
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@@ -16,8 +16,24 @@ namespace sharp {
VImage Composite(VImage src, VImage dst, const int gravity);
/*
Cutout src over dst with given gravity.
Alpha composite src over dst with given x and y offsets.
Assumes alpha channels are already premultiplied and will be unpremultiplied after.
*/
VImage Composite(VImage src, VImage dst, const int x, const int y);
/*
Check if the src and dst Images for composition operation are valid
*/
bool IsInputValidForComposition(VImage src, VImage dst);
/*
Given a valid src and dst, returns the composite of the two images
*/
VImage CompositeImage(VImage src, VImage dst);
/*
Cutout src over dst with given gravity.
*/
VImage Cutout(VImage src, VImage dst, const int gravity);
/*