HTML5模仿逼真地球自转
查看效果：http://hovertree.com/texiao/html5/8.htm
给我一个支点，我就可以撬动地球 阿基米德
下载 http://hovertree.com/down/h/earthhovertree.htm
代码如下：
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> <head> <title>html5 canvas让地球转动起来 - 何问起</title><base target="_blank" /> <script type="text/javascript" src="http://hovertree.com/texiao/html5/8/clay.min.js"></script> <script type="text/javascript"> function Earth() { var stage = new Clay.Stage(800, 600); var world = stage.getWorld(); var camera = stage.getCamera(); camera.set(0,0,0); camera.setResolution(800, 600); camera.setTarget(new Clay.Vector(-100,0,100)); window.onresize = function() { stage.resizeTo( 800,600 ); }; window.onresize(); Clay.Collada.load('http://hovertree.com/texiao/html5/8/earth.xml', function (scene) { scene.init(stage); var earth = new Clay.Texture('http://hovertree.com/texiao/html5/8/earthmap1k.jpg', stage); var clouds = new Image(); clouds.src = 'http://hovertree.com/texiao/html5/8/earthclouds1k.png'; var dark = new Image(); dark.src = 'http://hovert'+'ree.com/texiao/html5/8/darkside.png'; var waiting = setInterval(function(){ if (earth.complete && clouds.complete && dark.complete){ clearInterval(waiting); play(); } }, 1000); function play() { var shape = world.getShapes()[0]; shape.setMaterial(earth); var x, y, z, t = Math.PI/4, r = 0, tick = 0.01, radius = 200; var ttx = earth.canvas.getContext('2d'); var base = earth.image; var wind = 0; stage.addEvent('enterframe', function(){ ttx.drawImage(base, 0,0); var pos = (++wind)%1000; ttx.drawImage(clouds, pos, 0); ttx.drawImage(clouds, pos-1000, 0); ttx.drawImage(dark, 0,0); t += tick; x = -100 + Math.sin(t) * radius; z = 100 + Math.cos(t) * radius; y = Math.cos(t/3) * 50 camera.set(x, y, z); }); stage.run(); } }); } window.addEventListener('load', function(){ new Earth(); }, false); </script> <style type="text/css"> html, body { width: 100%; height: 100%; margin: 0; padding: 0; position: relative; background: black; } .canvas3D { background: black; position: absolute; left: 0; top: 0; } .earthhovertree{z-index:4321;position:fixed;left:789px;color:white;height:1234px}a{color:white} </style> </head> <body> <div class="earthhovertree"> <h3>给我一个支点，我就可以撬动地球 阿基米德</h3> <h3>给我一个HTML5浏览器，我就能转动地球 何问起</h3> <a href="http://hovertree.com">首页</a> <a href="http://hovertree.com/texiao/">特效</a> <a href="http://hovertree.com/hvtart/bjae/dubjwt12.htm">原文</a> <a href="http://hovertree.com/texiao/html5/7.htm">时钟</a> <a href="http://hovertree.com/texiao/css/12.htm">登录</a> <a href="http://hovertree.com/texiao/css/8.htm">打火机</a> <a href="http://hovertree.com/texiao/html5/6.htm">玫瑰花</a> <a href="http://hovertree.com/texiao/css/9.htm">3D文字</a> <a href="http://hovertree.com/texiao/html5/9.htm">太阳系</a> <br />Clay - A 3D engine on canvas <br /> <img src="http://hovertree.com/hvtimg/201512/pcmkj3ib.png" alt="阿基米德" /> </div> <div> <div id="canvas"> 您的浏览器不支持canvas，请使用支持HTML5的浏览器查看本页。何问起 hovertree.com </div> </div> </body> </html>
