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graphics: Refactoring: Use a value type of bounds instead of a pointer

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This commit is contained in:
Hajime Hoshi 2019-02-21 23:18:17 +09:00
parent 5ed6565d1d
commit 9595f7ae26
1 changed files with 7 additions and 7 deletions
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14
image.go
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@ -129,7 +129,7 @@ type Image struct {
// The level 0 image is a regular image and higher-level images are used for mipmap. // The level 0 image is a regular image and higher-level images are used for mipmap.
mipmap *mipmap mipmap *mipmap
bounds *image.Rectangle bounds image.Rectangle
original *Image original *Image
pixelsToSet []byte pixelsToSet []byte
@ -510,20 +510,20 @@ func (i *Image) SubImage(r image.Rectangle) image.Image {
r = r.Intersect(i.Bounds()) r = r.Intersect(i.Bounds())
// Need to check Empty explicitly. See the standard image package implementations. // Need to check Empty explicitly. See the standard image package implementations.
if r.Empty() { if r.Empty() {
img.bounds = &image.ZR img.bounds = image.ZR
} else { } else {
img.bounds = &r img.bounds = r
} }
return img return img
} }
// Bounds returns the bounds of the image. // Bounds returns the bounds of the image.
func (i *Image) Bounds() image.Rectangle { func (i *Image) Bounds() image.Rectangle {
if i.bounds == nil { if !i.isSubImage() {
w, h := i.mipmap.original().Size() w, h := i.mipmap.original().Size()
return image.Rect(0, 0, w, h) return image.Rect(0, 0, w, h)
} }
return *i.bounds return i.bounds
} }
// ColorModel returns the color model of the image. // ColorModel returns the color model of the image.
@ -549,7 +549,7 @@ func (i *Image) At(x, y int) color.Color {
if i.isDisposed() { if i.isDisposed() {
return color.RGBA{} return color.RGBA{}
} }
if i.bounds != nil && !image.Pt(x, y).In(*i.bounds) { if i.isSubImage() && !image.Pt(x, y).In(i.bounds) {
return color.RGBA{} return color.RGBA{}
} }
i.resolvePixelsToSet(true) i.resolvePixelsToSet(true)
@ -573,7 +573,7 @@ func (img *Image) Set(x, y int, clr color.Color) {
if img.isDisposed() { if img.isDisposed() {
return return
} }
if img.bounds != nil && !image.Pt(x, y).In(*img.bounds) { if img.isSubImage() && !image.Pt(x, y).In(img.bounds) {
return return
} }
if img.isSubImage() { if img.isSubImage() {