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144 lines
3.1 KiB
144 lines
3.1 KiB
<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js webgl - geometry hierarchy</title>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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<style>
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body {
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background:#fff;
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padding:0;
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margin:0;
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font-weight: bold;
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overflow:hidden;
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}
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</style>
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</head>
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<body>
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<script src="../build/three.js"></script>
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<script src="js/libs/stats.min.js"></script>
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<script>
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var camera, scene, renderer, stats, group;
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var mouseX = 0, mouseY = 0;
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var windowHalfX = window.innerWidth / 2;
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var windowHalfY = window.innerHeight / 2;
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init();
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animate();
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function init() {
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camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 10000 );
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camera.position.z = 500;
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scene = new THREE.Scene();
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scene.background = new THREE.Color( 0xffffff );
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scene.fog = new THREE.Fog( 0xffffff, 1, 10000 );
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var geometry = new THREE.BoxBufferGeometry( 100, 100, 100 );
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var material = new THREE.MeshNormalMaterial();
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group = new THREE.Group();
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for ( var i = 0; i < 1000; i ++ ) {
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var mesh = new THREE.Mesh( geometry, material );
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mesh.position.x = Math.random() * 2000 - 1000;
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mesh.position.y = Math.random() * 2000 - 1000;
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mesh.position.z = Math.random() * 2000 - 1000;
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mesh.rotation.x = Math.random() * 2 * Math.PI;
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mesh.rotation.y = Math.random() * 2 * Math.PI;
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mesh.matrixAutoUpdate = false;
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mesh.updateMatrix();
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group.add( mesh );
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}
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scene.add( group );
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//
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renderer = new THREE.WebGLRenderer( { antialias: true } );
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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document.body.appendChild( renderer.domElement );
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//
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stats = new Stats();
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document.body.appendChild( stats.dom );
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//
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document.addEventListener( 'mousemove', onDocumentMouseMove, false );
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//
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window.addEventListener( 'resize', onWindowResize, false );
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}
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function onWindowResize() {
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windowHalfX = window.innerWidth / 2;
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windowHalfY = window.innerHeight / 2;
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camera.aspect = window.innerWidth / window.innerHeight;
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camera.updateProjectionMatrix();
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renderer.setSize( window.innerWidth, window.innerHeight );
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}
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function onDocumentMouseMove( event ) {
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mouseX = ( event.clientX - windowHalfX ) * 10;
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mouseY = ( event.clientY - windowHalfY ) * 10;
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}
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//
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function animate() {
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requestAnimationFrame( animate );
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render();
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stats.update();
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}
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function render() {
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var time = Date.now() * 0.001;
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var rx = Math.sin( time * 0.7 ) * 0.5,
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ry = Math.sin( time * 0.3 ) * 0.5,
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rz = Math.sin( time * 0.2 ) * 0.5;
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camera.position.x += ( mouseX - camera.position.x ) * 0.05;
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camera.position.y += ( - mouseY - camera.position.y ) * 0.05;
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camera.lookAt( scene.position );
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group.rotation.x = rx;
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group.rotation.y = ry;
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group.rotation.z = rz;
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renderer.render( scene, camera );
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}
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</script>
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</body>
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</html>
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