javascript
/
three.js
spiegel van https://github.com/tazdij/three.js.git


			
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - buffergeometry - morph targets</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 {
				margin: 0px;
				overflow: hidden;
				text-align: center;
			}

			#info {
				color: #fff;
				position: absolute;
				top: 10px;
				width: 100%;
			}

		</style>
	</head>

	<body>
		<div id="container"></div>
		<div id="info">
			<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - buffergeometry - morph targets
		</div>

		<script src="../build/three.js"></script>

		<script src="js/controls/OrbitControls.js"></script>
		<script src="js/WebGL.js"></script>
		<script src="js/libs/dat.gui.min.js"></script>

		<script>

			var container, camera, scene, renderer, mesh;

			function init() {

				if ( WEBGL.isWebGLAvailable() === false ) {

					document.body.appendChild( WEBGL.getWebGLErrorMessage() );
					return false;

				}

				container = document.getElementById( 'container' );
				camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 20 );
				camera.position.z = 10;

				var controls = new THREE.OrbitControls( camera, container );

				scene = new THREE.Scene();
				scene.background = new THREE.Color( 0x8FBCD4 );
				var pointLight = new THREE.PointLight( 0xffffff, 1 );
				camera.add( pointLight );
				scene.add( camera );

				var geometry = createGeometry();

				var material = new THREE.MeshPhongMaterial( { flatShading: true, color: 0xff0000, morphTargets: true } );

				mesh = new THREE.Mesh( geometry, material );
				scene.add( mesh );

				initGUI();

				renderer = new THREE.WebGLRenderer( { antialias: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );

				renderer.setAnimationLoop( function () {

					renderer.render( scene, camera );

				} );

				container.appendChild( renderer.domElement );


				window.addEventListener( 'resize', onWindowResize, false );

			}

			function createGeometry() {

				var geometry = new THREE.BufferGeometry();

				// 2 x 2 cube centered at (0, 0, 0) defined by 8 corner vertices
				var positions = [
					- 1, - 1, 1, // front bottom left
					1, - 1, 1, // front bottom right
					- 1, 1, 1, // front top left
					1, 1, 1, // front top right
					- 1, - 1, - 1, // back bottom left
					1, - 1, - 1, // back bottom right
					- 1, 1, - 1, // back top left
					1, 1, - 1, // back top right
				];
				geometry.addAttribute( 'position', new THREE.Float32BufferAttribute( positions, 3 ) );

				// each face consists of two triangles
				var indices = [
					2, 0, 1, 1, 3, 2, // front
					4, 6, 5, 6, 7, 5, // back
					2, 3, 6, 3, 7, 6, // top
					0, 4, 5, 5, 1, 0, // bottom
					0, 6, 4, 6, 0, 2, // left
					1, 5, 3, 3, 5, 7 // right
				];
				geometry.setIndex( indices );

				// create an empty array to  hold targets for the attribute we want to morph
				// morphing positions and normals is supported
				geometry.morphAttributes.position = [];

				// squash
				var morphTargetPositions0 = [
					- 1.25, - 1, 1.25,
					1.25, - 1, 1.25,
					- 1.25, 0.5, 1.25,
					1.25, 0.5, 1.25,
					- 1.25, - 1, - 1.25,
					1.25, - 1, - 1.25,
					- 1.25, 0.5, - 1.25,
					1.25, 0.5, - 1.25,
				];
				geometry.morphAttributes.position[ 0 ] = new THREE.Float32BufferAttribute( morphTargetPositions0, 3 );

				// lean
				var morphTargetPositions1 = [
					- 1, - 1, 1,
					1, - 1, 1,
					- 1.5, 1, 1,
					0.5, 1, 1,
					- 1, - 1, - 1,
					1, - 1, - 1,
					- 1.5, 1, - 1,
					0.5, 1, - 1,
				];
				geometry.morphAttributes.position[ 1 ] = new THREE.Float32BufferAttribute( morphTargetPositions1, 3 );

				return geometry;

			}

			function initGUI() {

				// Set up dat.GUI to control targets
				var params = {
					squash: 0,
					lean: 0,
				};
				var gui = new dat.GUI();
				var folder = gui.addFolder( 'Morph Targets' );

				folder.add( params, 'squash', 0, 1 ).step( 0.01 ).onChange( function ( value ) {

					mesh.morphTargetInfluences[ 0 ] = value;

				} );
				folder.add( params, 'lean', 0, 1 ).step( 0.01 ).onChange( function ( value ) {

					mesh.morphTargetInfluences[ 1 ] = value;

				} );

				folder.open();

			}

			function onWindowResize() {

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();
				renderer.setSize( window.innerWidth, window.innerHeight );

			}

			init();
		</script>

	</body>
</html>