+ package main
-
-- example/mosaic - Mosaics an image
-- example/perspective - See an image in a perspective view
-- example/rotate - Rotates an image
-- etc.
-
+import (
+ "github.com/hajimehoshi/ebiten"
+ "github.com/hajimehoshi/ebiten/ebitenutil"
+ _ "image/jpeg"
+ "log"
+)
-
-Install on Mac OS X
+const (
+ screenWidth = 320
+ screenHeight = 240
+)
+const mosaicRatio = 16
+
+var (
+ gophersImage *ebiten.Image
+ gophersRenderTarget *ebiten.Image
+)
+
+func update(screen *ebiten.Image) error {
+ gophersRenderTarget.DrawImage(gophersImage, &ebiten.DrawImageOptions{
+ GeoM: ebiten.ScaleGeo(1.0/mosaicRatio, 1.0/mosaicRatio),
+ })
+ screen.DrawImage(gophersRenderTarget, &ebiten.DrawImageOptions{
+ GeoM: ebiten.ScaleGeo(mosaicRatio, mosaicRatio),
+ })
+ return nil
+}
+
+func main() {
+ var err error
+ gophersImage, _, err = ebitenutil.NewImageFromFile("images/gophers.jpg", ebiten.FilterNearest)
+ if err != nil {
+ log.Fatal(err)
+ }
+ w, h := gophersImage.Size()
+ gophersRenderTarget, err = ebiten.NewImage(w/mosaicRatio, h/mosaicRatio, ebiten.FilterNearest)
+ if err != nil {
+ log.Fatal(err)
+ }
+ if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Mosaic (Ebiten Demo)"); err != nil {
+ log.Fatal(err)
+ }
+}
+
|
+  |
+
+
+
+ package main
+
+import (
+ "github.com/hajimehoshi/ebiten"
+ "github.com/hajimehoshi/ebiten/ebitenutil"
+ "image"
+ _ "image/jpeg"
+ "log"
+)
+
+const (
+ screenWidth = 320
+ screenHeight = 240
+)
+
+var (
+ gophersImage *ebiten.Image
+)
+
+func update(screen *ebiten.Image) error {
+ parts := []ebiten.ImagePart{}
+ w, h := gophersImage.Size()
+ for i := 0; i < h; i++ {
+ width := w + i*3/4
+ x := ((h - i) * 3 / 4) / 2
+ parts = append(parts, ebiten.ImagePart{
+ Dst: image.Rect(x, i, x+width, i+1),
+ Src: image.Rect(0, i, w, i+1),
+ })
+ }
+ maxWidth := float64(w) + float64(h)*0.75
+ geo := ebiten.TranslateGeo(-maxWidth/2, -float64(h)/2)
+ geo.Concat(ebiten.TranslateGeo(screenWidth/2, screenHeight/2))
+ screen.DrawImage(gophersImage, &ebiten.DrawImageOptions{
+ Parts: parts,
+ GeoM: geo,
+ })
+ return nil
+}
+
+func main() {
+ var err error
+ gophersImage, _, err = ebitenutil.NewImageFromFile("images/gophers.jpg", ebiten.FilterNearest)
+ if err != nil {
+ log.Fatal(err)
+ }
+ if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Perspective (Ebiten Demo)"); err != nil {
+ log.Fatal(err)
+ }
+}
+
|
+  |
+
+
+
+ package main
+
+import (
+ "github.com/hajimehoshi/ebiten"
+ "github.com/hajimehoshi/ebiten/ebitenutil"
+ _ "image/jpeg"
+ "log"
+ "math"
+)
+
+const (
+ screenWidth = 320
+ screenHeight = 240
+)
+
+var (
+ count int
+ horizontalCount int
+ verticalCount int
+ gophersImage *ebiten.Image
+)
+
+func update(screen *ebiten.Image) error {
+ count++
+ if ebiten.IsKeyPressed(ebiten.KeyLeft) {
+ horizontalCount--
+ }
+ if ebiten.IsKeyPressed(ebiten.KeyRight) {
+ horizontalCount++
+ }
+ if ebiten.IsKeyPressed(ebiten.KeyDown) {
+ verticalCount--
+ }
+ if ebiten.IsKeyPressed(ebiten.KeyUp) {
+ verticalCount++
+ }
+
+ w, h := gophersImage.Size()
+ geo := ebiten.TranslateGeo(-float64(w)/2, -float64(h)/2)
+ scaleX := math.Pow(1.05, float64(horizontalCount))
+ scaleY := math.Pow(1.05, float64(verticalCount))
+ geo.Concat(ebiten.ScaleGeo(scaleX, scaleY))
+ geo.Concat(ebiten.RotateGeo(float64(count%720) * 2 * math.Pi / 720))
+ geo.Concat(ebiten.TranslateGeo(screenWidth/2, screenHeight/2))
+ if err := screen.DrawImage(gophersImage, &ebiten.DrawImageOptions{
+ GeoM: geo,
+ }); err != nil {
+ return err
+ }
+ return nil
+}
+
+func main() {
+ var err error
+ gophersImage, _, err = ebitenutil.NewImageFromFile("images/gophers.jpg", ebiten.FilterNearest)
+ if err != nil {
+ log.Fatal(err)
+ }
+ if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Image (Ebiten Demo)"); err != nil {
+ log.Fatal(err)
+ }
+}
+
|
+  |
+
+
+