标准物理材质

作者: Codifier | 来源:发表于2019-11-12 15:39 被阅读0次

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Mesh Standard Physically Material</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 = -20;
        camera.position.y = 50;
        camera.position.z = 40;
        camera.lookAt(new THREE.Vector3(10, 0, 0));

        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 groundGeom = new THREE.PlaneGeometry(100, 100, 4, 4);
        let groundMesh = new THREE.Mesh(groundGeom, new THREE.MeshBasicMaterial({
            color: 0x777777
        }));
        groundMesh.rotation.x = -Math.PI / 2;
        groundMesh.position.y = -20;
        scene.add(groundMesh);

        let cubeGeometry = new THREE.BoxGeometry(15, 15, 15);

        // A standard physically based material, using Metallic-Roughness workflow.
        let meshMaterial = new THREE.MeshStandardMaterial({
            color: 0x7777ff
        });

        let cube = new THREE.Mesh(cubeGeometry, meshMaterial);
        cube.position.set(0, 3, 2);
        scene.add(cube);

        // add ambient light
        let ambientLight = new THREE.AmbientLight(0x0c0c0c);
        scene.add(ambientLight);

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

        // attributes which can be modified in GUI
        const controls = {
            "color" : meshMaterial.color.getStyle(),
            "metalness" : meshMaterial.metalness,
            "roughness" : meshMaterial.roughness
        };
        // init GUI
        initGUI();

        renderScene();

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

            gui.addColor(controls, 'color').onChange(function (e) {
                meshMaterial.color.setStyle(e);
            });

            gui.add(controls, 'metalness', 0, 1, 0.01).onChange(function (e) {
                meshMaterial.metalness = e;
            });

            gui.add(controls, 'roughness', 0, 1, 0.01).onChange(function (e) {
                meshMaterial.roughness = e;
            });
        }

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

        function renderScene(){
            trackballControls.update(clock.getDelta());
            stats.update();
            cube.rotation.y += 0.02;
            cube.rotation.z += 0.02;
            cube.rotation.x += 0.02;
            requestAnimationFrame(renderScene);
            renderer.render(scene, camera);
        }
    }
</script>
</body>
</html>

运行结果：