我有一个问题,阴影贴图显示在一个物体的背面,我已经与它斗争了近两天了,以为我肯定做错了什么。
然后我写了这个jsFiddle:http://jsfiddle.net/gui2one/ec1snfee/
以下代码:
// shadow map issue
var light ,mesh, renderer, scene, camera, controls;
var clock = new THREE.Clock({autoStart:true});
init();
animate();
function init() {
// renderer
renderer = new THREE.WebGLRenderer();
renderer.shadowMapEnabled = true;
renderer.setSize( window.innerWidth, window.innerHeight );
document.body.appendChild( renderer.domElement );
// scene
scene = new THREE.Scene();
// camera
camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 10000 );
camera.position.set( -58, 10, 29 );
// controls
controls = new THREE.OrbitControls( camera );
// ambient
scene.add( new THREE.AmbientLight( 0x222222 ) );
// light
light = new THREE.SpotLight();
light.position.set( 20, 0, 0 );
//light.target.position.set(1000,0,0);
light.castShadow = true;
light.shadowBias = -0.001;
light.shadowCameraNear = 1;
light.shadowCameraFar = 100;
light.shadowMapWidth = 2048;
light.shadowMapHeight = 2048;
light.shadowCameraVisible = true;
scene.add( light );
// axes
scene.add( new THREE.AxisHelper( 5 ) );
var materialTest = new THREE.MeshPhongMaterial();
var planetTestGeo = new THREE.SphereGeometry(5);
var planetTest = new THREE.Mesh(planetTestGeo, materialTest);
planetTest.castShadow = true;
planetTest.receiveShadow = true;
scene.add(planetTest);
planetTest.position.set(-30,0,0);
var moonTestGeo = new THREE.SphereGeometry(1);
var moonTest = new THREE.Mesh(moonTestGeo, materialTest);
moonTest.castShadow = true;
moonTest.receiveShadow = true;
scene.add(moonTest);
moonTest.position.set(planetTest.position.x+10 ,planetTest.position.y-0.5 ,planetTest.position.z);
camera.lookAt(moonTest.position);
}
function animate() {
requestAnimationFrame( animate );
//controls.update();
renderer.render( scene, camera );
}
然后我注意到这个问题(超过2年前) THREE.JS Shadow on opposite side of light
现在有解决方法吗? 我正在尝试制作一个动画太阳系。而且我不能使用不同的物体或不同的材料来解决这个问题,因为行星和卫星显然总是在自己和彼此周围旋转。
答案 0 :(得分:1)
轻松修复:
light.shadowBias = 0.001;
而不是
light.shadowBias = -0.001;
我在网上看到了使用负偏见的例子。我不确定这是否是正确的行为。
祝你好运!更新
你会在球体的光端子上看到一些阴影痤疮。这似乎是three.js阴影映射方法的问题,并且应该更新AFAIK。