javascript - Three.js环境光出乎意料的效果

在下面的代码中，我渲染了一些立方体，并使用PointLight和AmbientLight对其进行了照明。但是，将AmbientLight设置为0xffffff时，无论其指定的颜色如何，都将侧面的颜色更改为白色。奇怪的是，点光源正在按预期工作。

我该如何使环境光像点光源那样工作，因为它不应该洗掉脸部颜色，而只是照亮它们？ IE。因此将环境光设置为0xffffff等同于在对象周围具有全强度的多个点光源。

$(function(){
    var camera, scene, renderer;
    var airplane;
    var fuselage;
    var tail;
    init();
    animate();

    function init() {
        scene = new THREE.Scene();
        camera = new THREE.PerspectiveCamera( 35, window.innerWidth / window.innerHeight, 0.1, 10000 );
        camera.position.z = 2;

        airplane = new THREE.Object3D();
        fuselage = newCube(
                {x: 1, y: 0.1, z: 0.1},
                {x: 0, y: 0, z: 0},
                [0xffff00, 0x808000, 0x0000ff, 0xff00000, 0xffffff, 0x808080],
                [0, 1, 2, 3, 4, 5]
        );
        airplane.add(fuselage);
        tail = newCube(
                {x: 0.15, y: 0.2, z: 0.05},
                {x: 0.5, y: 0.199, z: 0},
                [0xffff00, 0x808000, 0x0000ff, 0xff00000, 0xffffff, 0x808080],
                [0, 1, 2, 3, 4, 5]
        );
        airplane.add(tail);
        scene.add( airplane );

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

        var pointLight = new THREE.PointLight(0x888888);
        pointLight.position.x = 100;
        pointLight.position.y = 100;
        pointLight.position.z = 100;
        scene.add(pointLight);

        renderer = new THREE.WebGLRenderer();
        renderer.setClearColorHex(0x000000, 1);
        renderer.setSize( window.innerWidth, window.innerHeight );
        document.body.appendChild( renderer.domElement );
    }

    function animate() {
        requestAnimationFrame( animate );
        render();
    }
    function render() {
        airplane.rotation.x += 0.005;
        airplane.rotation.y += 0.01;
        renderer.render( scene, camera );
    }
});

function newCube(dims, pos, cols, colAss){
    var mesh;
    var geometry;
    var materials = [];
    geometry = new THREE.CubeGeometry( dims.x, dims.y, dims.z );
    for (var i in cols){
        materials[i] = new THREE.MeshLambertMaterial( { color: cols[i], overdraw: true } );
    }
    geometry.materials = materials;
    for (var i in colAss){
        geometry.faces[i].materialIndex = colAss[i];
    }
    mesh = new THREE.Mesh( geometry, new THREE.MeshFaceMaterial( materials ) );
    mesh.position = pos;
    return mesh;
}

最佳答案

编辑-three.js API已更改； material.ambient已被弃用。

解决方案是将环境光的强度设置为合理的值。

var ambientLight = new THREE.AmbientLight( 0xffffff, 0.2 );

更新为three.js r.84