mth/ebiten
1
0
Fork 0
mirror of https://github.com/hajimehoshi/ebiten.git synced 2024-12-25 11:18:54 +01:00
Code Issues Packages Projects Releases Wiki Activity

graphics: Add explanation to SourceRect

Browse Source
This commit is contained in:
Hajime Hoshi 2018-03-11 21:33:55 +09:00
parent 96402c11a2
commit ee7ef75b8b
1 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
image.go
View File

@ -308,6 +308,16 @@ type DrawImageOptions struct {
// If SourceRect is nil, whole image is used.
//
// It is assured that texels out of the SourceRect are never used.
//
// Calling DrawImage copies the content of SourceRect pointer. This means that
// even if the SourceRect value is modified after passed to DrawImage,
// the result of DrawImage doen't change.
//
// op := &ebiten.DrawImageOptions{}
// r := image.Rect(0, 0, 100, 100)
// op.SourceRect = &r
// dst.DrawImage(src, op)
// r.Min.X = 10 // This doesn't affect the previous DrawImage.
SourceRect *image.Rectangle
// GeoM is a geometry matrix to draw.