美文网首页
静态环境贴图

静态环境贴图

作者: Codifier | 来源:发表于2019-11-20 09:55 被阅读0次
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>StaticEnvMap</title>
    <script src="../../three-part/threejs/three.js"></script>
    <script src="../../three-part/utils/stats.min.js"></script>
    <script src="../../three-part/utils/dat.gui.min.js"></script>
    <script src="../controls/TrackballControls.js"></script>
    <script src="../util/util.js"></script>
    <style>
        body {
            margin: 0;
            overflow: hidden;
        }
    </style>
</head>
<body>
<div id="container"></div>
<script type="text/javascript">
    init();
    function init() {
        // show FPS
        let stats = initStats();
        // resize
        window.addEventListener('resize', onResize, false);

        let scene = new THREE.Scene();
        let camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 1000);
        camera.position.x = 0;
        camera.position.y = 20;
        camera.position.z = 40;
        camera.lookAt(scene.position);

        let renderer = new THREE.WebGLRenderer();
        renderer.setClearColor(new THREE.Color(0x000000));
        renderer.setSize(window.innerWidth, window.innerHeight);
        renderer.shadowMap.enabled = true;
        document.getElementById("container").appendChild(renderer.domElement);

        // init trackball control
        let trackballControls = initTrackballControls(camera, renderer);
        let clock = new THREE.Clock();

        let cubeTextureLoader = new THREE.CubeTextureLoader();
        let textureLoader = new THREE.TextureLoader();

        const urls = [
            '../assets/textures/cubemap/flowers/right.png',
            '../assets/textures/cubemap/flowers/left.png',
            '../assets/textures/cubemap/flowers/top.png',
            '../assets/textures/cubemap/flowers/bottom.png',
            '../assets/textures/cubemap/flowers/front.png',
            '../assets/textures/cubemap/flowers/back.png'
        ];

        /**
         * CubeTextureLoader.load ( urls : String, onLoad : Function, onProgress : Function, onError : Function ) : CubeTexture
         * urls — array of 6 urls to images, one for each side of the CubeTexture.
         * The urls should be specified in the following order: pos-x, neg-x, pos-y, neg-y, pos-z, neg-z. They can also be Data URIs.
         * Note that, by convention, cube maps are specified in a coordinate system in which positive-x is to the right when
         * looking up the positive-z axis -- in other words, using a left-handed coordinate system.
         * Since three.js uses a right-handed coordinate system, environment maps used in three.js will have pos-x and neg-x swapped.
         * onLoad — Will be called when load completes. The argument will be the loaded texture.
         * onProgress — Will be called while load progresses. The argument will be the XMLHttpRequest instance, which contains .total and .loaded bytes.
         * onError — Will be called when load errors.
         */
        scene.background = cubeTextureLoader.load(urls);

        let ambientLight = new THREE.AmbientLight(0x343434);
        scene.add(ambientLight);

        let spotLight = new THREE.SpotLight(0xffffff);
        spotLight.position.set(-10, 30, 40);
        spotLight.shadow.mapSize.width = 2048;
        spotLight.shadow.mapSize.height = 2048;
        spotLight.shadow.camera.fov = 15;
        spotLight.castShadow = true;
        spotLight.decay = 2;
        spotLight.penumbra = 0.05;
        scene.add(spotLight);

        let cubeMaterial = new THREE.MeshStandardMaterial({
            envMap: scene.background,
            color: 0xffffff,
            metalness: 1,
            roughness: 0,
        });

        let cubeGeometry = new THREE.BoxGeometry(10, 10, 10)
        let cube = new THREE.Mesh(cubeGeometry, cubeMaterial);
        cube.position.set(-8, 0, 0);
        scene.add(cube);

        let sphereMaterial = cubeMaterial.clone();
        sphereMaterial.normalMap = textureLoader.load("../assets/textures/engraved/Engraved_Metal_003_NORM.jpg");
        sphereMaterial.aoMap = textureLoader.load("../assets/textures/engraved/Engraved_Metal_003_OCC.jpg");
        sphereMaterial.roughnessMap = textureLoader.load("../assets/textures/engraved/Engraved_Metal_003_ROUGH.jpg");
        let sphereGeometry = new THREE.SphereGeometry(7, 50, 50);
        let sphere = new THREE.Mesh(sphereGeometry, sphereMaterial);
        sphere.position.set(8, 0, 0);
        scene.add(sphere);

        // attributes which can be modified in GUI
        const controls = {

        };
        // init GUI
        initGUI();

        renderScene();

        function initGUI(){
            let gui = new dat.GUI();

        }

        function onResize() {
            camera.aspect = window.innerWidth / window.innerHeight;
            camera.updateProjectionMatrix();
            renderer.setSize(window.innerWidth, window.innerHeight);
        }

        function renderScene(){
            trackballControls.update(clock.getDelta());
            stats.update();
            requestAnimationFrame(renderScene);
            renderer.render(scene, camera);
        }
    }
</script>
</body>
</html>

运行结果:


相关文章

网友评论

      本文标题:静态环境贴图

      本文链接:https://www.haomeiwen.com/subject/uzwnictx.html