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Resize gophers.jpg

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This commit is contained in:
Hajime Hoshi 2014-12-24 09:52:17 +09:00
parent 642d77bb11
commit 6b0ae1cd18
4 changed files with 9 additions and 10 deletions
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example/images/gophers.jpg
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Width:  |  Height:  |  Size: 38 KiB

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Width:  |  Height:  |  Size: 16 KiB

6
example/mosaic/main.go
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@ -35,11 +35,11 @@ var (
gophersRenderTarget *ebiten.Image gophersRenderTarget *ebiten.Image
) )
func Update(screen *ebiten.Image) error { func update(screen *ebiten.Image) error {
geo := ebiten.ScaleGeometry(1.0/mosaicRatio, 1.0/mosaicRatio) geo := ebiten.ScaleGeometry(1.0/mosaicRatio, 1.0/mosaicRatio)
ebiten.DrawImageGeometry(gophersRenderTarget, gophersImage, geo) ebiten.DrawImageGeometry(gophersRenderTarget, gophersImage, geo)
geo = ebiten.ScaleGeometry(mosaicRatio/2.0, mosaicRatio/2.0) geo = ebiten.ScaleGeometry(mosaicRatio, mosaicRatio)
ebiten.DrawImageGeometry(screen, gophersRenderTarget, geo) ebiten.DrawImageGeometry(screen, gophersRenderTarget, geo)
return nil return nil
} }
@ -55,7 +55,7 @@ func main() {
if err != nil { if err != nil {
log.Fatal(err) log.Fatal(err)
} }
if err := ebiten.Run(Update, screenWidth, screenHeight, 2, "Mosaic (Ebiten Demo)"); err != nil { if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Mosaic (Ebiten Demo)"); err != nil {
log.Fatal(err) log.Fatal(err)
} }
} }

5
example/perspective/main.go
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@ -33,7 +33,7 @@ var (
gophersImage *ebiten.Image gophersImage *ebiten.Image
) )
func Update(screen *ebiten.Image) error { func update(screen *ebiten.Image) error {
dsts, srcs := []image.Rectangle{}, []image.Rectangle{} dsts, srcs := []image.Rectangle{}, []image.Rectangle{}
w, h := gophersImage.Size() w, h := gophersImage.Size()
for i := 0; i < h; i++ { for i := 0; i < h; i++ {
@ -44,7 +44,6 @@ func Update(screen *ebiten.Image) error {
} }
maxWidth := float64(w) + float64(h)*0.75 maxWidth := float64(w) + float64(h)*0.75
geo := ebiten.TranslateGeometry(-maxWidth/2, -float64(h)/2) geo := ebiten.TranslateGeometry(-maxWidth/2, -float64(h)/2)
geo.Concat(ebiten.ScaleGeometry(0.4, 0.4))
geo.Concat(ebiten.TranslateGeometry(screenWidth/2, screenHeight/2)) geo.Concat(ebiten.TranslateGeometry(screenWidth/2, screenHeight/2))
ebiten.DrawImagePartsGeometry(screen, dsts, gophersImage, srcs, geo) ebiten.DrawImagePartsGeometry(screen, dsts, gophersImage, srcs, geo)
return nil return nil
@ -56,7 +55,7 @@ func main() {
if err != nil { if err != nil {
log.Fatal(err) log.Fatal(err)
} }
if err := ebiten.Run(Update, screenWidth, screenHeight, 2, "Perspective (Ebiten Demo)"); err != nil { if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Perspective (Ebiten Demo)"); err != nil {
log.Fatal(err) log.Fatal(err)
} }
} }

8
example/rotate/main.go
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@ -36,7 +36,7 @@ var (
gophersImage *ebiten.Image gophersImage *ebiten.Image
) )
func Update(screen *ebiten.Image) error { func update(screen *ebiten.Image) error {
count++ count++
if ebiten.IsKeyPressed(ebiten.KeyLeft) { if ebiten.IsKeyPressed(ebiten.KeyLeft) {
horizontalCount-- horizontalCount--
@ -53,8 +53,8 @@ func Update(screen *ebiten.Image) error {
w, h := gophersImage.Size() w, h := gophersImage.Size()
geo := ebiten.TranslateGeometry(-float64(w)/2, -float64(h)/2) geo := ebiten.TranslateGeometry(-float64(w)/2, -float64(h)/2)
scaleX := 0.5 * math.Pow(1.05, float64(horizontalCount)) scaleX := math.Pow(1.05, float64(horizontalCount))
scaleY := 0.5 * math.Pow(1.05, float64(verticalCount)) scaleY := math.Pow(1.05, float64(verticalCount))
geo.Concat(ebiten.ScaleGeometry(scaleX, scaleY)) geo.Concat(ebiten.ScaleGeometry(scaleX, scaleY))
geo.Concat(ebiten.RotateGeometry(float64(count%720) * 2 * math.Pi / 720)) geo.Concat(ebiten.RotateGeometry(float64(count%720) * 2 * math.Pi / 720))
geo.Concat(ebiten.TranslateGeometry(screenWidth/2, screenHeight/2)) geo.Concat(ebiten.TranslateGeometry(screenWidth/2, screenHeight/2))
@ -70,7 +70,7 @@ func main() {
if err != nil { if err != nil {
log.Fatal(err) log.Fatal(err)
} }
if err := ebiten.Run(Update, screenWidth, screenHeight, 2, "Image (Ebiten Demo)"); err != nil { if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Image (Ebiten Demo)"); err != nil {
log.Fatal(err) log.Fatal(err)
} }
} }