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这篇文章主要介绍了利用three.js怎么编写一个围绕某物体旋转效果,此处给大家介绍的非常详细,对大家的学习或工作具有一定的参考价值,需要的朋友可以参考下:
<!DOCTYPE html> <html lang="en" > <head> <meta charset="UTF-8"> <title>Document</title> <script src="http://cdn.bootcss.com/three.js/r83/three.min.js"></script> <script src="http://cooklife.cn/html/node_modules/dat.gui/build/dat.gui.min.js"></script> </head> <body onload="threeExcute()" > <div id="box"></div> </body> <!-- Three.js的核心五步就是: 1.设置three.js渲染器 2.设置摄像机camera 3.设置场景scene 4.设置光源light 5.设置物体object --> <script> // 1.设置three.js渲染器 var renderer; function initThree(){ width = document.getElementById("box").clientWidth; height = document.getElementById("box").clientHeight; renderer = new THREE.WebGLRenderer({ antialias:true });/*生成渲染器对象(属性:抗锯齿效果为设置有效)*/ renderer.setSize(width,height); document.getElementById("box").appendChild(renderer.domElement); /*设置canvas背景色(clearColor)和背景色透明度(clearAlpha) */ renderer.setClearColor(0xFFFF00,1.0); } // 2.设置摄像机camera var camera; function initCamera(){ camera = new THREE.PerspectiveCamera(45,width/height,1,10000); camera.position.x = 1000; camera.position.y = 1000; camera.position.z = 1000; camera.up.x = 0; camera.up.y = 0; camera.up.z = 100; camera.lookAt({x:0,y:0,z:0}); //设置视野的中心坐标 } // 3.设置场景 var scene; function initScene(){ scene = new THREE.Scene(); } // 4.设置光源light var light; function initLight(){ light = new THREE.DirectionalLight(0xFF00FF, 1.0, 0); //平行光 light.position.set(100,100, 200); //设置光源位置 scene.add(light); //将官员添加到场景 } //5.设置物体 var sphereMesh; var cubeMesh; var cubeMesh3; var cubeMesh4; var cubeMesh5; var cubeMesh6; var cubeMesh7; function initObject(){ cubeMesh = new THREE.Mesh(new THREE.BoxGeometry(80,80,80),new THREE.MeshLambertMaterial({color:0xff0000})/* 设置球体的材质*/); cubeMesh3 = new THREE.Mesh(new THREE.BoxGeometry(80,80,80),new THREE.MeshLambertMaterial({color:0xff0000})/* 设置球体的材质*/); cubeMesh4 = new THREE.Mesh(new THREE.BoxGeometry(80,80,80),new THREE.MeshLambertMaterial({color:0xff0000})/* 设置球体的材质*/); sphereMesh = new THREE.Mesh(new THREE.SphereGeometry(200,200,200),new THREE.MeshLambertMaterial({color:0xff00FF})/*设置球体的材质*/); //材质设定 sphereMesh.position.set(0,0,0); /*设置物体位置*/ cubeMesh3.position.set(400,0,0); cubeMesh.position.set(390,150,0); cubeMesh4.position.set(380,100,0); /* * 旋转要点。。。 */ var pivotPoint = new THREE.Object3D(); pivotPoint.add(cubeMesh); pivotPoint.add(cubeMesh3); pivotPoint.add(cubeMesh4); sphereMesh.add(pivotPoint); scene.add(sphereMesh); sphereMesh.name = 'cube' } control = new function () { this.rotationSpeedX = 0.001; this.rotationSpeedY = 0.001; this.rotationSpeedZ = 0.001; }; function addController(){ var gui = new dat.GUI(); gui.add(control, 'rotationSpeedX', -0.2, 0.2); gui.add(control, 'rotationSpeedY', -0.2, 0.2); gui.add(control, 'rotationSpeedZ', -0.2, 0.2); } function render(){ renderer.render(scene, camera); scene.getObjectByName('cube').rotation.x += control.rotationSpeedX; scene.getObjectByName('cube').rotation.y += control.rotationSpeedY; scene.getObjectByName('cube').rotation.z += control.rotationSpeedZ; requestAnimationFrame(render); } function threeExcute(){ initThree(); initCamera(); initScene(); initLight(); initObject(); renderer.clear(); addController(); render(); } </script> <style type="text/css"> div#box{ border: none; cursor: move; width: 100%; height: 100%; background-color: #EEEEEE; } </style> </html>
到此这篇关于利用three.js怎么编写一个围绕某物体旋转效果的文章就介绍到这了,更多相关的内容请搜索亿速云以前的文章或继续浏览下面的相关文章希望大家以后多多支持亿速云!
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