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examples/paint: Change the color

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Hajime Hoshi 2016-03-05 00:57:14 +09:00
parent 723876feba
commit 62af947368
1 changed files with 1 additions and 1 deletions
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2
examples/paint/main.go
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@ -46,7 +46,7 @@ func update(screen *ebiten.Image) error {
if ebiten.IsMouseButtonPressed(ebiten.MouseButtonLeft) {
op := &ebiten.DrawImageOptions{}
op.GeoM.Translate(float64(mx), float64(my))
op.ColorM.Scale(1.0, 0.25, 0.25, 1.0)
op.ColorM.Scale(1.0, 0.50, 0.125, 1.0)
theta := 2.0 * math.Pi * float64(count%60) / 60.0
op.ColorM.RotateHue(theta)
if err := canvasImage.DrawImage(brushImage, op); err != nil {