<!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>