THREE.js代码备份——canvas - geometry - earth(球体贴纹理)
<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js canvas - geometry - earth</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<style>
body {
color: #808080;
font-family:Monospace;
font-size:13px;
text-align:center; background-color: #ffffff;
margin: 0px;
overflow: hidden;
} #info {
position: absolute;
top: 0px; width: 100%;
padding: 5px;
} a { color: #0080ff;
} </style>
</head>
<body> <div id="container"></div>
<div id="info"><a href="http://threejs.org" target="_blank">three.js</a> - earth demo</div> <script src="../build/three.js"></script> <script src="js/renderers/Projector.js"></script>
<script src="js/renderers/CanvasRenderer.js"></script> <script src="js/libs/stats.min.js"></script> <script> var container, stats;
var camera, scene, renderer;
var group;
var mouseX = 0, mouseY = 0; var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2; init();
animate(); function init() { container = document.getElementById( 'container' ); camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 2000 );
camera.position.z = 500; scene = new THREE.Scene(); group = new THREE.Group();
scene.add( group ); // earth var loader = new THREE.TextureLoader();
loader.load( 'textures/land_ocean_ice_cloud_2048.jpg', function ( texture ) { var geometry = new THREE.SphereGeometry( 200, 20, 20 ); var material = new THREE.MeshBasicMaterial( { map: texture, overdraw: 0.5 } );
var mesh = new THREE.Mesh( geometry, material );
group.add( mesh ); } ); // shadow var canvas = document.createElement( 'canvas' );
canvas.width = 128;
canvas.height = 128; var context = canvas.getContext( '2d' );
var gradient = context.createRadialGradient(
canvas.width / 2,
canvas.height / 2,
0,
canvas.width / 2,
canvas.height / 2,
canvas.width / 2
);
gradient.addColorStop( 0.1, 'rgba(210,210,210,1)' ); //0.1范围的灰色
gradient.addColorStop( 1, 'rgba(255,255,255,1)' ); //整个范围的白色(相叠加达到影子的效果) context.fillStyle = gradient;
context.fillRect( 0, 0, canvas.width, canvas.height ); var texture = new THREE.CanvasTexture( canvas ); var geometry = new THREE.PlaneBufferGeometry( 300, 300, 3, 3 );
var material = new THREE.MeshBasicMaterial( { map: texture, overdraw:0.5 } ); var mesh = new THREE.Mesh( geometry, material );
mesh.position.y = - 250;
mesh.rotation.x = - Math.PI / 2;
group.add( mesh ); renderer = new THREE.CanvasRenderer();
renderer.setClearColor( 0xffffff );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement ); stats = new Stats();
container.appendChild( stats.dom ); document.addEventListener( 'mousemove', onDocumentMouseMove, false ); // window.addEventListener( 'resize', onWindowResize, false ); } function onWindowResize() { windowHalfX = window.innerWidth / 2;
windowHalfY = window.innerHeight / 2; camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix(); renderer.setSize( window.innerWidth, window.innerHeight ); } function onDocumentMouseMove( event ) { mouseX = ( event.clientX - windowHalfX );
mouseY = ( event.clientY - windowHalfY ); } // function animate() { requestAnimationFrame( animate ); render();
stats.update(); } function render() { camera.position.x += ( mouseX - camera.position.x ) * 0.05;
camera.position.y += ( - mouseY - camera.position.y ) * 0.05;
camera.lookAt( scene.position ); group.rotation.y -= 0.005; renderer.render( scene, camera ); } </script> </body>
</html>
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