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我试图让这个对象投下阴影。但是边缘有奇怪的阴影。我认为该对象正在将阴影投射到“自身”的另一个组件上

在此处输入图像描述

有没有办法消除它？

这是小提琴：http: //jsfiddle.net/paulocoelho/qMqH7/3/

这是强制性代码，但只需检查小提琴..

var container, stats;
var camera, scene, renderer;
var cube, plane;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;

init();

function init() {
    container = document.createElement( 'div' );
    document.body.appendChild( container );

    camera = new THREE.PerspectiveCamera(50, window.innerWidth / window.innerHeight, .1, 10000 );
    camera.position.x=50;
    camera.position.y=50;
    camera.position.z=50;
    camera.lookAt(new THREE.Vector3(0,0,0));
    scene = new THREE.Scene();

    renderer = new THREE.WebGLRenderer();
    renderer.setSize( window.innerWidth, window.innerHeight );
    renderer.shadowMapEnabled = true;
    renderer.shadowMapSoft = true;
    container.appendChild( renderer.domElement );

    //var ambientLight = new THREE.AmbientLight(0x000000);
    //scene.add(ambientLight);

    light = new THREE.SpotLight();
    light.position.set(337,400,313);
    light.castShadow = true;
    light.shadowMapWidth = 3000;
    light.shadowMapHeight = 3000;
    // light.shadowCameraVisible = true;
    scene.add(light);

    var geometry = new THREE.PlaneGeometry( 200, 200, 30, 30 );
    geometry.applyMatrix( new THREE.Matrix4().makeRotationX( - Math.PI / 2 ) );
    geometry.applyMatrix( new THREE.Matrix4().setPosition( new THREE.Vector3(0,0,0) ) );
    var material = new THREE.MeshLambertMaterial( { color: 0xEEEEEE } );
    plane = new THREE.Mesh( geometry, material );
    plane.receiveShadow = true;
    scene.add( plane );

    var loader = new THREE.OBJMTLLoader();
    loader.addEventListener("load", function (event) {
        cube = event.content;
        for(k in cube.children){
            cube.children[k].castShadow = true;
            cube.children[k].receiveShadow = true;
        }
        scene.add(cube);
        animate();
    }); 
    loader.load ("https://dl.dropboxusercontent.com/u/4334059/VM.obj", "https://dl.dropboxusercontent.com/u/4334059/VM.mtl");
}

function animate() {
    requestAnimationFrame( animate );
    render();
}

function render() {
    cube.rotation.y += 0.01;
    renderer.render( scene, camera );
}
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1 回答 1

3

您需要将所有light参数设置为合理的值。如果您不了解它们的用途，请搜索它们中的每一个。

light = new THREE.SpotLight( 0xffffff );
light.position.set( 200, 200, -200 );
light.castShadow = true;
light.shadowMapWidth = 1024;    // power of 2
light.shadowMapHeight = 1024;

light.shadowCameraNear = 200;   // keep near and far planes as tight as possible
light.shadowCameraFar = 500;    // shadows not cast past the far plane
light.shadowCameraFov = 20;
light.shadowBias = -0.00022;    // a parameter you can tweak if there are artifacts
light.shadowDarkness = 0.5;

light.shadowCameraVisible = true;
scene.add( light );

保持你的影子相机尽可能紧。

另外，在设置阴影相机时，一定要使用OrbitControls或类似的东西，这样你就可以把相机拉回来看看你在做什么。

PS你的相机近平面是0.1，远平面是10000。不好。保持近平面至少为 1。近平面的小值会导致深度排序精度问题。

小提琴：http: //jsfiddle.net/qMqH7/4/

三.js r.58

于 2013-07-12T15:54:12.153 回答