人丑就该多读书 2017-12-18
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <style> html, body { margin: 0; padding: 0; } div#canvas-frame { border: none; cursor: pointer; width: 100%; height: 600px; background-color: #EEEEEE; } </style> </head> <body> <div id="canvas-frame"></div> <script src="js/three.js"></script> <script> //定义一些需要的变量 var renderer, camera, scene, light, object; var width, height; //初始化three function initThree(){ width = document.getElementById('canvas-frame').clientWidth; height=document.getElementById('canvas-frame').clientHeight; renderer= new THREE.WebGLRenderer({ antialias:true }); renderer.setSize(width,height); document.getElementById('canvas-frame').appendChild(renderer.domElement); renderer.setClearColor(0xFFFFFF, 1.0); } //定义相机 function initCamera(){ camera = new THREE.PerspectiveCamera(45,width/height,1,10000); camera.position.x=0; camera.position.y=1000; camera.position.z=0; camera.up.x=0; camera.up.y=0; camera.up.z=1; camera.lookAt({ x:0, y:0, z:0 }); } //定义场景 function initScene(){ scene = new THREE.Scene(); } //定义灯光 function initLight(){ light = new THREE.DirectionalLight(0xFF0000,1.0,0); light.position.set(100,100,200); scene.add(light); } var cube; function initObject(){ var geometry = new THREE.Geometry(); geometry.vertices.push( new THREE.Vector3(-500,0,0)); geometry.vertices.push( new THREE.Vector3(500,0,0)); for(var i = 0;i<=20;i++){ var line = new THREE.Line(geometry,new THREE.LineBasicMaterial({color:0x000000,opacity:0.2})); line.position.z=(i*50)-500; scene.add(line); var line = new THREE.Line(geometry,new THREE.LineBasicMaterial({color:0x000000,opacity:0.2})); line.position.x = ( i * 50 ) - 500; line.rotation.y = 90 * Math.PI / 180; scene.add( line ); } } function threeStart() { initThree(); initCamera(); initScene(); initLight(); initObject(); renderer.clear(); renderer.render(scene, camera); } window.onload = threeStart(); </script> </body> </html>