threeJS-Helper05-DirectionalLightHelper(方向光助手)
阿新 • • 發佈:2018-12-03
需要電子檔書籍或者原始碼可以Q群:828202939 希望可以和大家一起學習、一起進步!!
如有錯別字或有理解不到位的地方,可以留言或者加微信15250969798,博主會及時修改!!!!!
博主的案例並不難,只是為了更好的給想入門threeJS的同學一點點經驗!!!!!
本章節學習的內容可以從的官方文件中找到
涉及的知識點博主已經從three原始碼庫裡面摘要出來放在對應的註釋裡面
今天學習Helper裡面的DirectionalLightHelper助手!
順便加入了滑鼠控制相機的元件OrbitControls,不懂可以先忽略!
效果圖:
程式碼:
<html> <head> <title>Helper05-DirectionalLightHelper(方向光助手)</title> <style> body { margin: 0; } canvas { width: 100%; height: 100% } </style> </head> <body> <script src="../../../build/three.js"></script> <script src="../../js/controls/OrbitControls.js"></script> <script> var camera, scene, renderer, geometry, material, animate, controls; //常用變數 var cube, light,helper; //自定義物件變數 var target = new THREE.Vector3(0, 0, 0); init(); animate(); function init() { scene = new THREE.Scene(); scene.background = new THREE.Color(0xcfcfcf); camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000); camera.position.set(0, 0, 150); camera.lookAt(target); camera.updateProjectionMatrix(); //相機更新 // DirectionalLight( color, intensity ) light = new THREE.DirectionalLight(0xFFFFFF,2); light.position.set(20,20,50); // DirectionalLightHelper( light, size, color ) var helper = new THREE.DirectionalLightHelper(light, 50,0xFFFFFF); scene.add(helper); renderer = new THREE.WebGLRenderer(); renderer.setSize(window.innerWidth, window.innerHeight); document.body.appendChild(renderer.domElement); //OrbitControls控制元件操作模組 controls = new THREE.OrbitControls(camera, renderer.domElement); controls.addEventListener('change', function () { renderer.render(scene, camera); }); // BoxGeometry( width, height, depth, widthSegments, heightSegments, depthSegments ) geometry = new THREE.BoxGeometry(40, 40, 40); material = new THREE.MeshBasicMaterial({ color: 0x00ff00, wireframe: false }); //wireframe預設為false cube = new THREE.Mesh(geometry, material); scene.add(cube); } function animate() { requestAnimationFrame(animate); controls.update(); cube.rotation.x += 0.01; renderer.render(scene, camera); }; </script> </body> </html>