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80 lines
1.8 KiB
Go
80 lines
1.8 KiB
Go
package testpattern
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import (
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"github.com/hajimehoshi/go-ebiten"
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"github.com/hajimehoshi/go-ebiten/graphics"
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"github.com/hajimehoshi/go-ebiten/graphics/matrix"
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"image"
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_ "image/png"
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"math"
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"os"
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)
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type TestPattern struct {
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textureId graphics.TextureId
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textureWidth int
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textureHeight int
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geos []matrix.Geometry
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}
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func New() *TestPattern {
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return &TestPattern{}
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}
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func (game *TestPattern) InitTextures(tf graphics.TextureFactory) {
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file, err := os.Open("images/test_pattern.png")
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if err != nil {
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panic(err)
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}
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defer file.Close()
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img, _, err := image.Decode(file)
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if err != nil {
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panic(err)
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}
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if game.textureId, err = tf.NewTextureFromImage(img); err != nil {
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panic(err)
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}
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size := img.Bounds().Size()
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game.textureWidth = size.X
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game.textureHeight = size.Y
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}
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func (game *TestPattern) Update(context ebiten.GameContext) {
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geo := matrix.IdentityGeometry()
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geo.Translate(13, 13)
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game.geos = append(game.geos, geo)
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geo = matrix.IdentityGeometry()
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geo.Translate(float64(13+game.textureWidth), 13)
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game.geos = append(game.geos, geo)
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geo = matrix.IdentityGeometry()
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geo.Translate(float64(13+game.textureWidth*2), 13)
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game.geos = append(game.geos, geo)
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geo = matrix.IdentityGeometry()
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geo.Translate(float64(13+game.textureWidth*3), 13)
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game.geos = append(game.geos, geo)
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geo = matrix.IdentityGeometry()
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geo.Scale(2, 2)
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geo.Translate(13, float64(13+game.textureHeight))
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game.geos = append(game.geos, geo)
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geo = matrix.IdentityGeometry()
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geo.Rotate(math.Pi)
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geo.Scale(2, 2)
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geo.Translate(float64(game.textureWidth*2),
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float64(game.textureHeight*2))
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geo.Translate(float64(13+game.textureWidth*2),
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float64(13+game.textureHeight))
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game.geos = append(game.geos, geo)
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}
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func (game *TestPattern) Draw(g graphics.Context) {
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for _, geo := range game.geos {
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g.DrawTexture(game.textureId, geo, matrix.IdentityColor())
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}
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}
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