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< title > Ebiten example - hue< / title >
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< a class = "navbar-brand" href = "/" > Ebiten< / a >
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< li > < a href = "https://github.com/hajimehoshi/ebiten" > GitHub< / a > < / li >
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< main > < div class = "container" >
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< h2 > Ebiten example - hue< / h2 >
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< iframe src = "hue.content.html" width = "640" height = "480" > < / iframe >
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< pre > < code class = "language-go" > // + build example
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package main
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import (
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_ " image/jpeg"
" log"
" math"
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" github.com/hajimehoshi/ebiten"
" github.com/hajimehoshi/ebiten/ebitenutil"
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)
const (
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screenWidth = 320
screenHeight = 240
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)
var (
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count int
gophersImage *ebiten.Image
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)
func update(screen *ebiten.Image) error {
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count+ +
w, h := gophersImage.Size()
op := & ebiten.DrawImageOptions{}
op.GeoM.Translate(float64(screenWidth-w)/2, float64(screenHeight-h)/2)
op.ColorM.RotateHue(float64(count%360) * 2 * math.Pi / 360)
if err := screen.DrawImage(gophersImage, op); err != nil {
return err
}
return nil
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}
func main() {
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var err error
gophersImage, _, err = ebitenutil.NewImageFromFile(" _resources/images/gophers.jpg" , ebiten.FilterNearest)
if err != nil {
log.Fatal(err)
}
if err := ebiten.Run(update, screenWidth, screenHeight, 2, " Hue (Ebiten Demo)" ); err != nil {
log.Fatal(err)
}
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}
< / code > < / pre >
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< p > © 2013 Hajime Hoshi< / p >
< p > Code is licensed under < a href = "https://github.com/hajimehoshi/ebiten/blob/master/LICENSE" > Apache License 2.0< / a > .< / p >
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