09-THREE.JS 物体缩放，坐标，旋转，位移，是否可见
Posted 韩帅
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<!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); // 创建渲染 var renderer = new THREE.WebGLRenderer(); renderer.setClearColor(new THREE.Color(0xEEEEEE, 1.0)); renderer.setSize(window.innerWidth, window.innerHeight); renderer.shadowMapEnabled = true; // 创建一个地面 var planeGeometry = new THREE.PlaneGeometry(60, 40, 1, 1); var planeMaterial = new THREE.MeshLambertMaterial({color: 0xffffff}); var plane = new THREE.Mesh(planeGeometry, planeMaterial); plane.receiveShadow = true; // 旋转地面 保持水平 plane.rotation.x = -0.5 * Math.PI; plane.position.x = 0; plane.position.y = 0; plane.position.z = 0; // 在场景中添加水平面 scene.add(plane); // 相机位置设置 camera.position.x = -30; camera.position.y = 40; camera.position.z = 30; camera.lookAt(scene.position); // 添加自然光 var ambientLight = new THREE.AmbientLight(0x0c0c0c); scene.add(ambientLight); // 添加点光源 var spotLight = new THREE.SpotLight(0xffffff); spotLight.position.set(-40, 60, 020); spotLight.castShadow = true; scene.add(spotLight); // 追加到DOM节点中去 document.getElementById("WebGL-output").appendChild(renderer.domElement); var step = 0; var controls = new function () { this.scaleX = 1; this.scaleY = 1; this.scaleZ = 1; this.positionX = 0; this.positionY = 4; this.positionZ = 0; this.rotationX = 0; this.rotationY = 0; this.rotationZ = 0; this.scale = 1; this.translateX = 0; this.translateY = 0; this.translateZ = 0; this.visible = true; this.translate = function () { //沿着xyz位移 cube.translateX(controls.translateX); cube.translateY(controls.translateY); cube.translateZ(controls.translateZ); //设置xyz坐标 controls.positionX = cube.position.x; controls.positionY = cube.position.y; controls.positionZ = cube.position.z; } }; //创建长方体 光照材质 var material = new THREE.MeshLambertMaterial({color: 0x44ff44}); var geom = new THREE.BoxGeometry(5, 8, 3); var cube = new THREE.Mesh(geom, material); cube.position.y = 4; cube.castShadow = true; scene.add(cube); var gui = new dat.GUI(); guiScale = gui.addFolder(‘scale‘); guiScale.add(controls, ‘scaleX‘, 0, 5); guiScale.add(controls, ‘scaleY‘, 0, 5); guiScale.add(controls, ‘scaleZ‘, 0, 5); guiPosition = gui.addFolder(‘position‘); var contX = guiPosition.add(controls, ‘positionX‘, -10, 10); var contY = guiPosition.add(controls, ‘positionY‘, -4, 20); var contZ = guiPosition.add(controls, ‘positionZ‘, -10, 10); contX.listen(); contX.onChange(function (value) { cube.position.x = controls.positionX; }); contY.listen(); contY.onChange(function (value) { cube.position.y = controls.positionY; }); contZ.listen(); contZ.onChange(function (value) { cube.position.z = controls.positionZ; }); guiRotation = gui.addFolder(‘rotation‘); guiRotation.add(controls, ‘rotationX‘, -4, 4); guiRotation.add(controls, ‘rotationY‘, -4, 4); guiRotation.add(controls, ‘rotationZ‘, -4, 4); guiTranslate = gui.addFolder(‘translate‘); guiTranslate.add(controls, ‘translateX‘, -10, 10); guiTranslate.add(controls, ‘translateY‘, -10, 10); guiTranslate.add(controls, ‘translateZ‘, -10, 10); guiTranslate.add(controls, ‘translate‘); gui.add(controls, ‘visible‘); render(); function render() { stats.update(); cube.visible = controls.visible; cube.rotation.x = controls.rotationX; cube.rotation.y = controls.rotationY; cube.rotation.z = controls.rotationZ; cube.scale.set(controls.scaleX, controls.scaleY, controls.scaleZ); requestAnimationFrame(render); renderer.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>
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