35-THREE.JS 多面体
<!DOCTYPE html> <html> <head> <title></title> <script src="https://cdn.bootcss.com/three.js/r67/three.js"></script> <script src="https://cdn.bootcss.com/stats.js/r10/Stats.min.js"></script> <script type="text/javascript" src="https://cdn.bootcss.com/dat-gui/0.7.3/dat.gui.js"></script> <style> body { margin: 0; overflow: hidden; } </style> </head> <body> <div id="Stats-output"> </div> <div id="WebGL-output"> </div> <script type="text/javascript"> // 初始化 function init() { var stats = initStats(); // 创建一个场景 var scene = new THREE.Scene(); // 创建一个相机 var camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 1000); // 创建一个渲染器 var webGLRenderer = new THREE.WebGLRenderer(); webGLRenderer.setClearColor(new THREE.Color(0xEEEEEE, 1.0)); webGLRenderer.setSize(window.innerWidth, window.innerHeight); webGLRenderer.shadowMapEnabled = true; var polyhedron = createMesh(new THREE.IcosahedronGeometry(10, 0)); // 创建一个多面体 scene.add(polyhedron); // 设置照相机的位置和朝向 camera.position.x = -30; camera.position.y = 40; camera.position.z = 50; camera.lookAt(new THREE.Vector3(10, 0, 0)); // 把渲染之后的结果放到DOM元素中去 document.getElementById("WebGL-output").appendChild(webGLRenderer.domElement); var step = 0; var controls = new function () { this.radius = 10; this.detail = 0; this.type = 'Icosahedron'; this.redraw = function () { // remove the old plane scene.remove(polyhedron); // create a new one switch (controls.type) { case 'Icosahedron': polyhedron = createMesh(new THREE.IcosahedronGeometry(controls.radius, controls.detail)); break; case 'Tetrahedron': polyhedron = createMesh(new THREE.TetrahedronGeometry(controls.radius, controls.detail)); break; case 'Octahedron': polyhedron = createMesh(new THREE.OctahedronGeometry(controls.radius, controls.detail)); break; case 'Dodecahedron': polyhedron = createMesh(new THREE.DodecahedronGeometry(controls.radius, controls.detail)); break; case 'Custom': var vertices = [ 1, 1, 1, -1, -1, 1, -1, 1, -1, 1, -1, -1 ]; var indices = [ 2, 1, 0, 0, 3, 2, 1, 3, 0, 2, 3, 1 ]; polyhedron = createMesh(new THREE.PolyhedronGeometry(vertices, indices, controls.radius, controls.detail)); break; } // 把它添加到场景中去 scene.add(polyhedron); }; }; var gui = new dat.GUI(); gui.add(controls, 'radius', 0, 40).step(1).onChange(controls.redraw); gui.add(controls, 'detail', 0, 3).step(1).onChange(controls.redraw); gui.add(controls, 'type', ['Icosahedron', 'Tetrahedron', 'Octahedron', 'Dodecahedron', 'Custom']).onChange(controls.redraw); render(); function createMesh(geom) { // 申请两种材料 var meshMaterial = new THREE.MeshNormalMaterial(); meshMaterial.side = THREE.DoubleSide; var wireFrameMat = new THREE.MeshBasicMaterial(); wireFrameMat.wireframe = true; // 创建混合材料 var mesh = THREE.SceneUtils.createMultiMaterialObject(geom, [meshMaterial, wireFrameMat]); return mesh; } function render() { stats.update(); polyhedron.rotation.y = step += 0.01; requestAnimationFrame(render); webGLRenderer.render(scene, camera); } function initStats() { var stats = new Stats(); stats.setMode(0); // 0: fps, 1: ms stats.domElement.style.position = 'absolute'; stats.domElement.style.left = '0px'; stats.domElement.style.top = '0px'; document.getElementById("Stats-output").appendChild(stats.domElement); return stats; } } window.onload = init; </script> </body> </html>