置换贴图

作者: Codifier | 来源:发表于2019-11-19 19:31 被阅读0次

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Blender学习笔记-（001）置换贴图

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>DisplacementMap</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 = -30;
        camera.position.y = 40;
        camera.position.z = 30;
        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();

        // add a plane
        let planeGeometry = new THREE.PlaneGeometry(100, 100, 1, 1);
        let planeMaterial = new THREE.MeshLambertMaterial({
            color: 0xffffff
        });
        let plane = new THREE.Mesh(planeGeometry, planeMaterial);
        plane.receiveShadow = true;
        plane.rotation.x = -0.5 * Math.PI;
        scene.add(plane);

        let ambienLight = new THREE.AmbientLight(0xffffff);
        scene.add(ambienLight);

        let spotLight = new THREE.SpotLight(0xffffff, 0.6);
        spotLight.position.set(-40, 60, -10);
        spotLight.castShadow = true;
        scene.add(spotLight);

        let textureLoader = new THREE.TextureLoader();
        let sphereGeometry = new THREE.SphereGeometry(10, 100, 100);
        let sphereMaterial = new THREE.MeshStandardMaterial({
            map: textureLoader.load("../assets/textures/w_c.jpg"),
            metalness: 0.2,
            roughness: 0.2
        });
        let sphere = new THREE.Mesh(sphereGeometry, sphereMaterial);
        sphere.position.set(12, 10, 0);
        scene.add(sphere);

        // return a new material with the same parameters as this material
        let sphereMatWithDisplace = sphereMaterial.clone();
        sphereMatWithDisplace.displacementMap = textureLoader.load("../assets/textures/w_d.png");
        let sphereGeometry2 = new THREE.SphereGeometry(10, 100, 100);
        let sphere2 = new THREE.Mesh(sphereGeometry2, sphereMatWithDisplace);
        sphere2.position.set(-12, 10, 0);
        scene.add(sphere2);

        // 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：