mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-10 13:07:26 +01:00
65 lines
1.7 KiB
Go
65 lines
1.7 KiB
Go
/*
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Copyright 2014 Hajime Hoshi
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package main
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import (
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"github.com/hajimehoshi/ebiten"
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"github.com/hajimehoshi/ebiten/ebitenutil"
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_ "image/jpeg"
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"log"
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)
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const (
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screenWidth = 320
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screenHeight = 240
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)
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const mosaicRatio = 16
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type Game struct {
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gophersTexture *ebiten.Texture
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gophersRenderTarget *ebiten.RenderTarget
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}
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func (g *Game) Update(gr ebiten.GraphicsContext) error {
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gr.PushRenderTarget(g.gophersRenderTarget)
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geo := ebiten.ScaleGeometry(1.0/mosaicRatio, 1.0/mosaicRatio)
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ebiten.DrawWholeTexture(gr, g.gophersTexture, geo, ebiten.ColorMatrixI())
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gr.PopRenderTarget()
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geo = ebiten.ScaleGeometry(mosaicRatio/2.0, mosaicRatio/2.0)
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ebiten.DrawWholeTexture(gr, g.gophersRenderTarget.Texture(), geo, ebiten.ColorMatrixI())
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return nil
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}
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func main() {
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g := new(Game)
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var err error
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g.gophersTexture, _, err = ebitenutil.NewTextureFromFile("images/gophers.jpg", ebiten.FilterNearest)
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if err != nil {
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log.Fatal(err)
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}
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w, h := g.gophersTexture.Size()
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g.gophersRenderTarget, err = ebiten.NewRenderTarget(w/mosaicRatio, h/mosaicRatio, ebiten.FilterNearest)
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if err != nil {
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log.Fatal(err)
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}
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if err := ebiten.Run(g.Update, screenWidth, screenHeight, 2, "Mosaic (Ebiten Demo)"); err != nil {
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log.Fatal(err)
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}
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}
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