Three 学习日志(六)—— 环境光与平行光
一、设置环境光
const ambient = new THREE.AmbientLight(0xffffff, 0.4);
scene.add(ambient);
二、调整环境光强度
const ambient = new THREE.AmbientLight(0xffffff, 0.8);
scene.add(ambient);
三、设置平行光与平行光辅助
const directionalLight = new THREE.DirectionalLight(0xffffff, 1);
directionalLight.position.set(80, 100, 50);
directionalLight.target = mesh;
scene.add(directionalLight);
四、完整代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Learn Three</title>
<script src="../build/three.js"></script>
<script type="importmap">
{
"imports": {
"three": "../build/three.module.js",
"three/addons/": "../examples/jsm/"
}
}
</script>
</head>
<body>
<script type="module">
import {
OrbitControls } from 'three/addons/controls/OrbitControls.js';
const scene = new THREE.Scene();
const axesHelper = new THREE.AxesHelper(150);
scene.add(axesHelper);
const geometry = new THREE.BoxGeometry(100, 100, 100);
const material = new THREE.MeshLambertMaterial();
const mesh = new THREE.Mesh(geometry, material);
mesh.position.set(0, 0, 0);
scene.add(mesh);
const directionalLight = new THREE.DirectionalLight(0xffffff, 1);
directionalLight.position.set(80, 100, 50);
directionalLight.target = mesh;
scene.add(directionalLight);
const dirLightHelper = new THREE.DirectionalLightHelper(directionalLight, 5,0xff0000);
scene.add(dirLightHelper);
const camera = new THREE.PerspectiveCamera();
camera.position.set(200, 200, 200);
camera.lookAt(0, 0, 0);
const width = 800;
const height = 500;
const renderer = new THREE.WebGLRenderer();
renderer.setSize(width, height);
renderer.render(scene, camera);
document.body.appendChild(renderer.domElement);
const controls = new OrbitControls(camera, renderer.domElement);
controls.addEventListener('change', function () {
renderer.render(scene, camera);
});
</script>
</body>
</html>