mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-12-27 20:28:54 +01:00
93 lines
3.0 KiB
HTML
93 lines
3.0 KiB
HTML
<!DOCTYPE html>
|
|
<link rel="shortcut icon" href="../favicon.png" type="image/png" >
|
|
<link rel="icon" href="../favicon.png" type="image/png" >
|
|
<title>Ebiten example - rotate</title>
|
|
<link rel="stylesheet" href="../stylesheets/bootstrap.min.css">
|
|
<link rel="stylesheet" href="../stylesheets/highlight-github.css">
|
|
<link rel="stylesheet" href="../stylesheets/ebiten.css">
|
|
|
|
<header class="navbar"><div class="container">
|
|
<div class="navbar-header">
|
|
<a class="navbar-brand" href="..">Ebiten</a>
|
|
</div>
|
|
<nav class="collapse navbar-collapse">
|
|
<ul class="nav navbar-nav navbar-right">
|
|
<li><a href="https://github.com/hajimehoshi/ebiten">GitHub</a></li>
|
|
<li><a href="http://godoc.org/github.com/hajimehoshi/ebiten">GoDoc</a></li>
|
|
<li><a href="https://github.com/hajimehoshi/ebiten/wiki">Wiki</a>
|
|
</ul>
|
|
</nav>
|
|
</header>
|
|
|
|
<main><div class="container">
|
|
|
|
<h2>Ebiten example - rotate</h2>
|
|
<iframe src="rotate.content.html" width="640" height="480"></iframe>
|
|
<pre><code class="language-go">// +build example
|
|
|
|
package main
|
|
|
|
import (
|
|
_ "image/jpeg"
|
|
"log"
|
|
"math"
|
|
|
|
"github.com/hajimehoshi/ebiten"
|
|
"github.com/hajimehoshi/ebiten/ebitenutil"
|
|
)
|
|
|
|
const (
|
|
screenWidth = 320
|
|
screenHeight = 240
|
|
)
|
|
|
|
var (
|
|
count int
|
|
gophersImage *ebiten.Image
|
|
)
|
|
|
|
func update(screen *ebiten.Image) error {
|
|
count++
|
|
w, h := gophersImage.Size()
|
|
op := &ebiten.DrawImageOptions{}
|
|
op.GeoM.Translate(-float64(w)/2, -float64(h)/2)
|
|
op.GeoM.Rotate(float64(count%360) * 2 * math.Pi / 360)
|
|
op.GeoM.Translate(screenWidth/2, screenHeight/2)
|
|
if err := screen.DrawImage(gophersImage, op); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func main() {
|
|
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, "Rotate (Ebiten Demo)"); err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
}
|
|
</code></pre>
|
|
|
|
</div></main>
|
|
|
|
<footer><div class="container">
|
|
<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>
|
|
<p>The content of this page is licensed under <a href="https://creativecommons.org/licenses/by/4.0/">the Creative Commons Attribution 4.0 License</a>.</p>
|
|
</div></footer>
|
|
|
|
<script src="../scripts/highlight.pack.js"></script>
|
|
<script>hljs.initHighlightingOnLoad();</script>
|
|
<script>
|
|
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
|
|
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
|
|
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
|
|
})(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
|
|
|
|
ga('create', 'UA-83252440-1', 'auto');
|
|
ga('send', 'pageview');
|
|
</script>
|