ThreejsLab/dynamic.html at master · zouyang1230/ThreejsLab · GitHub

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<!DOCTYPE html>
<html>
<head>
    <title>dynamic</title>
    <script src="./libs/three.js"></script>
    <script src="./libs/dat.gui.js"></script>
    <script src="./libs/OrbitControls.js"></script>
    <style>
        body {
            margin: 0;
            overflow: hidden;
        }
    </style>
</head>
<script>

    // 全局变量
    var renderer;
    var scene;
    var camera, cubeCamera;

    var control;
    var orbit;

    var sphere;

    function init() {

        // 场景
        scene = new THREE.Scene();

        // 相机
        camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 10000);

        orbit = new THREE.OrbitControls(camera);

        // 渲染器
        renderer = new THREE.WebGLRenderer();
        renderer.setClearColor(0x000000, 1.0);
        renderer.setSize(window.innerWidth, window.innerHeight);

        var textureCube = createCubeMap();
        textureCube.format = THREE.RGBFormat;

        var shader = THREE.ShaderLib["cube"];
        shader.uniforms["tCube"].value = textureCube;

        var material = new THREE.ShaderMaterial({

            fragmentShader: shader.fragmentShader,
            vertexShader: shader.vertexShader,
            uniforms: shader.uniforms,
            depthWrite: false,
            side: THREE.DoubleSide

        });

        var skybox = new THREE.Mesh(new THREE.BoxGeometry(10000, 10000, 10000), material);
        scene.add(skybox);

        cubeCamera = new THREE.CubeCamera(0.1, 20000, 256);
        scene.add(cubeCamera);

        var sphereGeometry = new THREE.SphereGeometry(4, 15, 15);
        var boxGeometry = new THREE.BoxGeometry(5, 5, 5);
        var cylinderGeometry = new THREE.CylinderGeometry(2, 4, 10, 20, 20, false);

        var dynamicEnvMaterial = new THREE.MeshBasicMaterial({envMap: cubeCamera.renderTarget, side: THREE.DoubleSide});
        var envMaterial = new THREE.MeshBasicMaterial({envMap: textureCube, side: THREE.DoubleSide});

        sphere = new THREE.Mesh(sphereGeometry, dynamicEnvMaterial);
        sphere.name = 'sphere';
        scene.add(sphere);

        var cylinder = new THREE.Mesh(cylinderGeometry, envMaterial);
        cylinder.name = 'cylinder';
        scene.add(cylinder);
        cylinder.position.set(10, 0, 0);

        var cube = new THREE.Mesh(boxGeometry, envMaterial);
        cube.name = 'cube';
        scene.add(cube);
        cube.position.set(-10, 0, 0);

        camera.position.x = 0;
        camera.position.y = 5;
        camera.position.z = 33;
        camera.lookAt(scene.position);

        document.body.appendChild(renderer.domElement);

        control = new function () {
            this.rotationSpeed = 0.005;
            this.scale = 1;
        };
        addControls(control);

        render();
    }

    function addControls(controlObject) {
        var gui = new dat.GUI();
        gui.add(controlObject, 'rotationSpeed', -0.1, 0.1);

    }

    function createCubeMap() {

        var path = "./images/";
        var format = '.jpg';
        var urls = [
            path + 'posx' + format, path + 'negx' + format,
            path + 'posy' + format, path + 'negy' + format,
            path + 'posz' + format, path + 'negz' + format
        ];

        var textureCube = THREE.ImageUtils.loadTextureCube(urls, new THREE.CubeReflectionMapping());
        return textureCube;
    }

    function render() {

        orbit.update();

        sphere.visible = false;
        cubeCamera.updateCubeMap(renderer, scene);
        sphere.visible = true;


        renderer.render(scene, camera);
        scene.getObjectByName('cube').rotation.x += control.rotationSpeed;
        scene.getObjectByName('cube').rotation.y += control.rotationSpeed;
        scene.getObjectByName('cylinder').rotation.x += control.rotationSpeed;


        requestAnimationFrame(render);
    }

    window.onload = init;

</script>
<body>
</body>
</html>