[英]Why doesn't DirectionalLight in three.js work?
我在Three.js做一个戒指。 我需要添加相机和照明。 相机工作正常,但我遇到了照明问题。 这是我的代码:
<script src="three.js"></script>
<script src="https://threejs.org/examples/js/controls/OrbitControls.js"></script>
<script src="https://threejsfundamentals.org/threejs/../3rdparty/dat.gui.module.js"></script>
<script>
const scene = new THREE.Scene();
const camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 0.1, 1000 );
const renderer = new THREE.WebGLRenderer();
renderer.setSize( window.innerWidth, window.innerHeight );
const color = 0xFFFFFF;
const intensity = 1;
const light = new THREE.DirectionalLight(color, intensity);
light.position.set(10, 10, 10);
light.target.position.set(-5, 0, 0);
scene.add(light);
scene.add(light.target);
document.body.appendChild( renderer.domElement );
let controls = new THREE.OrbitControls(camera, renderer.domElement);
controls.target.set(0, 0, 0);
controls.rotateSpeed = 0.5;
controls.update();
camera.position.z = 5;
const geometry = new THREE.RingGeometry( 1, 3, 32 );
const material = new THREE.MeshBasicMaterial( { color: 0xffff00, side: THREE.DoubleSide } );
const mesh = new THREE.Mesh( geometry, material );
mesh.receiveShadow = true;
mesh.castShadow = true
scene.add( mesh );
function animate() {
requestAnimationFrame( animate );
mesh.rotation.x += 0.01;
mesh.rotation.y += 0.01;
renderer.render( scene, camera );
}
animate();
</script>
我尝试将DirectionalLight
更改为AmbientLight
和SpotLight
,但它们也都不起作用。 对我来说它是什么样的光并不重要,我只需要展示我的 3d 形状。
MeshBasicMaterial
不受灯光影响。 你必须使用不同的材料。 使用Blinn-Phong模型用于光计算的MeshPhongMaterial
:
const material = new THREE.MeshBasicMaterial( { color: 0xffff00, side: THREE.DoubleSide } );
const material = new THREE.MeshPhongMaterial( { color: 0xffff00, side: THREE.DoubleSide } );
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