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graphics: Add comments

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Hajime Hoshi 2017-12-16 18:35:25 +09:00
parent 6eb148b9a1
commit 94d54b7d2c
1 changed files with 2 additions and 0 deletions
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image.go
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@ -227,6 +227,8 @@ func (i *Image) ReplacePixels(p []uint8) error {
type DrawImageOptions struct { type DrawImageOptions struct {
// SourceRect is the region of the source image to draw. // SourceRect is the region of the source image to draw.
// If SourceRect is nil, whole image is used. // If SourceRect is nil, whole image is used.
//
// It is assured that texels out of the SourceRect are never used.
SourceRect *image.Rectangle SourceRect *image.Rectangle
// GeoM is a geometry matrix to draw. // GeoM is a geometry matrix to draw.