threeJS-Helper09-HemisphereLightHelper(半球光助手)
阿新 • • 發佈：2018-12-16
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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HemisphereLightHelper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>threeJS-Helper09-HemisphereLightHelper(半球光助手)</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, 50, 150); camera.lookAt(target); camera.updateProjectionMatrix(); //相機更新 // HemisphereLight( skyColor, groundColor, intensity ) light = new THREE.HemisphereLight(0xFFFFFF, 5); light.position.set(20, 20, 50); // HemisphereLightHelper( light：視覺化的光, size：用於視覺化光的網格的大小, color：（可選）如果這不是設定，則幫助器將採用光的顏色 ) var helper02 = new THREE.HemisphereLightHelper(light, 5); scene.add(helper02); // PolarGridHelper( radius：標網格的半徑, radials：徑向線的數量, circles：圓圈數, // divisions：每個圓圈使用的線段數, color1：用於網格元素的第一種顏色, color2：用於網格元素的第一種顏色 ) var radius = 100; var radials = 16; var circles = 8; var divisions = 64; var PolarGridHelper = new THREE.PolarGridHelper(radius, radials, circles, divisions); PolarGridHelper.position.set(0, -20, 0) scene.add(PolarGridHelper) 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(30, 30, 30, 3, 3, 3); material = new THREE.MeshBasicMaterial({ color: 0xcfffff, wireframe: false }); //wireframe預設為false cube = new THREE.Mesh(geometry, material); scene.add(cube); } function animate() { requestAnimationFrame(animate); controls.update(); cube.rotation.y += 0.01; renderer.render(scene, camera); }; </script> </body> </html>