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op/paint: note that ImageOp caches image contents

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Signed-off-by: Elias Naur <mail@eliasnaur.com>
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Elias Naur
2019-10-03 19:26:37 +02:00
parent f3819d8164
commit 31e12607d7
1 changed files with 4 additions and 1 deletions
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op/paint/paint.go
+4 -1
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@@ -16,7 +16,10 @@ import (
// ImageOp sets the material to a section of an // ImageOp sets the material to a section of an
// image. // image.
type ImageOp struct { type ImageOp struct {
// Src is the image. // Src is the image. Note that once a particular image.Image has
// been used by an ImageOp, updating the image contents might not
// be reflected in the rendered image. Use a new image.Image
// instead.
Src image.Image Src image.Image
// Rect defines the section of Src to use. // Rect defines the section of Src to use.
Rect image.Rectangle Rect image.Rectangle