HTML5 WebGL Three.js 开发实例 - 场景摄像头创建和对象交互控制（OrbitControls）

该实例演示WebGL/Three的基本用法，包括：创建一个场景，摄像机，渲染器，轨道控制（orbitcontrols）。我们也将创建简单的定向光源，加上一些对象（不同的几何形状）和阴影效果。

webgl, 教程

《three.js使用多个渐变torus模拟光环光晕》申请公开！

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HTML
CSS
JavaScript
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编译

JavaScript

var colors = [
    0xFF62B0,
    0x9A03FE,
    0x62D0FF,
    0x48FB0D,
    0xDFA800,
    0xC27E3A,
    0x990099,
    0x9669FE,
    0x23819C,
    0x01F33E,
    0xB6BA18,
    0xFF800D,
    0xB96F6F,
    0x4A9586
];
var particleLight;

var lesson1 = {
    scene: null,
    camera: null,
    renderer: null,
    container: null,
    controls: null,
    clock: null,
    stats: null,

init: function() { // Initialization

// create main scene
        this.scene = new THREE.Scene();

var SCREEN_WIDTH = window.innerWidth,
            SCREEN_HEIGHT = window.innerHeight;

// prepare camera
        var VIEW_ANGLE = 45,
            ASPECT = SCREEN_WIDTH / SCREEN_HEIGHT,
            NEAR = 1,
            FAR = 10000;
        this.camera = new THREE.PerspectiveCamera(VIEW_ANGLE, ASPECT, NEAR, FAR);
        this.scene.add(this.camera);
        this.camera.position.set(-1000, 1000, 0);
        this.camera.lookAt(new THREE.Vector3(0, 0, 0));

// prepare renderer
        this.renderer = new THREE.WebGLRenderer({
            antialias: true,
            alpha: false
        });
        this.renderer.setSize(SCREEN_WIDTH, SCREEN_HEIGHT);
        this.renderer.setClearColor(0xffffff);

this.renderer.shadowMapEnabled = true;
        this.renderer.shadowMapSoft = true;

// prepare container
        this.container = document.createElement('div');
        document.body.appendChild(this.container);
        this.container.appendChild(this.renderer.domElement);

// events
        THREEx.WindowResize(this.renderer, this.camera);

// prepare controls (OrbitControls)
        this.controls = new THREE.OrbitControls(this.camera, this.renderer.domElement);
        this.controls.target = new THREE.Vector3(0, 0, 0);

// prepare clock
        this.clock = new THREE.Clock();

// prepare stats
        this.stats = new Stats();
        this.stats.domElement.style.position = 'absolute';
        this.stats.domElement.style.bottom = '0px';
        this.stats.domElement.style.zIndex = 10;
        this.container.appendChild(this.stats.domElement);

// add directional light
        var dLight = new THREE.DirectionalLight(0xffffff);
        dLight.position.set(1, 1000, 1);
        dLight.castShadow = true;
        dLight.shadowCameraVisible = true;
        dLight.shadowDarkness = 0.2;
        dLight.shadowMapWidth = dLight.shadowMapHeight = 1000;
        this.scene.add(dLight);

// add particle of light
        particleLight = new THREE.Mesh(new THREE.SphereGeometry(10, 10, 10), new THREE.MeshBasicMaterial({
            color: 0x44ff44
        }));
        particleLight.position = dLight.position;
        this.scene.add(particleLight);

// add simple ground
        var groundGeometry = new THREE.PlaneGeometry(1000, 1000, 1, 1);
        ground = new THREE.Mesh(groundGeometry, new THREE.MeshLambertMaterial({
            color: this.getRandColor()
        }));
        ground.position.y = 0;
        ground.rotation.x = -Math.PI / 2;
        ground.receiveShadow = true;
        this.scene.add(ground);

// add circle shape
        var circle = new THREE.Mesh(new THREE.CircleGeometry(70, 50), new THREE.MeshLambertMaterial({
            color: this.getRandColor()
        }));
        circle.rotation.x = -Math.PI / 2;
        circle.rotation.y = -Math.PI / 3;
        circle.rotation.z = Math.PI / 3;
        circle.position.x = -300;
        circle.position.y = 150;
        circle.position.z = -300;
        circle.castShadow = circle.receiveShadow = true;
        this.scene.add(circle);

// add cube shape
        var cube = new THREE.Mesh(new THREE.CubeGeometry(100, 100, 100), new THREE.MeshLambertMaterial({
            color: this.getRandColor()
        }));
        cube.rotation.x = cube.rotation.z = Math.PI * 0.1;
        cube.position.x = -300;
        cube.position.y = 150;
        cube.position.z = -100;
        cube.castShadow = cube.receiveShadow = true;
        this.scene.add(cube);

// add cylinder shape
        var cube = new THREE.Mesh(new THREE.CylinderGeometry(60, 80, 90, 32), new THREE.MeshLambertMaterial({
            color: this.getRandColor()
        }));
        cube.rotation.x = cube.rotation.z = Math.PI * 0.1;
        cube.position.x = -300;
        cube.position.y = 150;
        cube.position.z = 100;
        cube.castShadow = cube.receiveShadow = true;
        this.scene.add(cube);

// add extrude geometry shape
        var extrudeSettings = {
            amount: 10,
            steps: 10,
            bevelSegments: 10,
            bevelSize: 10,
            bevelThickness: 10
        };
        var triangleShape = new THREE.Shape();
        triangleShape.moveTo(0, -50);
        triangleShape.lineTo(-50, 50);
        triangleShape.lineTo(50, 50);
        triangleShape.lineTo(0, -50);

var extrude = new THREE.Mesh(new THREE.ExtrudeGeometry(triangleShape, extrudeSettings), new THREE.MeshLambertMaterial({
            color: this.getRandColor()
        }));
        extrude.rotation.y = Math.PI / 2;
        extrude.position.x = -300;
        extrude.position.y = 150;
        extrude.position.z = 300;
        extrude.castShadow = extrude.receiveShadow = true;
        this.scene.add(extrude);

// add icosahedron shape
        var icosahedron = new THREE.Mesh(new THREE.IcosahedronGeometry(70), new THREE.MeshLambertMaterial({
            color: this.getRandColor()
        }));
        icosahedron.position.x = -100;
        icosahedron.position.y = 150;
        icosahedron.position.z = -300;
        icosahedron.castShadow = icosahedron.receiveShadow = true;
        this.scene.add(icosahedron);

// add octahedron shape
        var octahedron = new THREE.Mesh(new THREE.OctahedronGeometry(70), new THREE.MeshLambertMaterial({
            color: this.getRandColor()
        }));
        octahedron.position.x = -100;
        octahedron.position.y = 150;
        octahedron.position.z = -100;
        octahedron.castShadow = octahedron.receiveShadow = true;
        this.scene.add(octahedron);

// add ring shape
        var ring = new THREE.Mesh(new THREE.RingGeometry(30, 70, 32), new THREE.MeshLambertMaterial({
            color: this.getRandColor()
        }));
        ring.rotation.y = -Math.PI / 2;
        ring.position.x = -100;
        ring.position.y = 150;
        ring.position.z = 100;
        ring.castShadow = ring.receiveShadow = true;
        this.scene.add(ring);

// add shape geometry shape
        var shapeG = new THREE.Mesh(new THREE.ShapeGeometry(triangleShape), new THREE.MeshLambertMaterial({
            color: this.getRandColor()
        }));
        shapeG.rotation.y = -Math.PI / 2;
        shapeG.position.x = -100;
        shapeG.position.y = 150;
        shapeG.position.z = 300;
        shapeG.castShadow = shapeG.receiveShadow = true;
        this.scene.add(shapeG);

// add sphere shape
        var sphere = new THREE.Mesh(new THREE.SphereGeometry(70, 32, 32), new THREE.MeshLambertMaterial({
            color: this.getRandColor()
        }));
        sphere.rotation.y = -Math.PI / 2;
        sphere.position.x = 100;
        sphere.position.y = 150;
        sphere.position.z = -300;
        sphere.castShadow = sphere.receiveShadow = true;
        this.scene.add(sphere);

// add tetrahedron shape
        var tetrahedron = new THREE.Mesh(new THREE.TetrahedronGeometry(70), new THREE.MeshLambertMaterial({
            color: this.getRandColor()
        }));
        tetrahedron.position.x = 100;
        tetrahedron.position.y = 150;
        tetrahedron.position.z = -100;
        tetrahedron.castShadow = tetrahedron.receiveShadow = true;
        this.scene.add(tetrahedron);

// add torus shape
        var torus = new THREE.Mesh(new THREE.TorusGeometry(70, 20, 16, 100), new THREE.MeshLambertMaterial({
            color: this.getRandColor()
        }));
        torus.rotation.y = -Math.PI / 2;
        torus.position.x = 100;
        torus.position.y = 150;
        torus.position.z = 100;
        torus.castShadow = torus.receiveShadow = true;
        this.scene.add(torus);

// add torus knot shape
        var torusK = new THREE.Mesh(new THREE.TorusKnotGeometry(70, 20, 16, 100), new THREE.MeshLambertMaterial({
            color: this.getRandColor()
        }));
        torusK.rotation.y = -Math.PI / 2;
        torusK.position.x = 100;
        torusK.position.y = 150;
        torusK.position.z = 300;
        torusK.castShadow = torusK.receiveShadow = true;
        this.scene.add(torusK);

// add tube shape
        var points = [];
        for (var i = 0; i < 10; i++) {
            var randomX = -100 + Math.round(Math.random() * 200);
            var randomY = -100 + Math.round(Math.random() * 200);
            var randomZ = -100 + Math.round(Math.random() * 200);

points.push(new THREE.Vector3(randomX, randomY, randomZ));
        }
        var tube = new THREE.Mesh(new THREE.TubeGeometry(new THREE.SplineCurve3(points), 64, 20), new THREE.MeshLambertMaterial({
            color: this.getRandColor()
        }));
        tube.rotation.y = -Math.PI / 2;
        tube.position.x = 0;
        tube.position.y = 500;
        tube.position.z = 0;
        tube.castShadow = tube.receiveShadow = true;
        this.scene.add(tube);
    },
    getRandColor: function() {
        return colors[Math.floor(Math.random() * colors.length)];
    }
};

// Animate the scene
function animate() {
    requestAnimationFrame(animate);
    render();
    update();
}

// Update controls and stats
function update() {
    lesson1.controls.update(lesson1.clock.getDelta());
    lesson1.stats.update();

// smoothly move the particleLight
    var timer = Date.now() * 0.000025;
    particleLight.position.x = Math.sin(timer * 5) * 300;
    particleLight.position.z = Math.cos(timer * 5) * 300;
}

// Render the scene
function render() {
    if (lesson1.renderer) {
        lesson1.renderer.render(lesson1.scene, lesson1.camera);
    }
}

// Initialize lesson on page load
function initializeLesson() {
    lesson1.init();
    animate();
}

if (window.addEventListener)
    window.addEventListener('load', initializeLesson, false);
else if (window.attachEvent)
    window.attachEvent('onload', initializeLesson);
else window.onload = initializeLesson;

编译

CSS

HTML

该实例演示WebGL/Three的基本用法，包括：创建一个场景，摄像机，渲染器，轨道控制（orbitcontrols）。我们也将创建简单的定向光源，加上一些对象（不同的几何形状）和阴影效果。

webgl, 教程

编辑器支持Emmet

快捷键

该实例演示WebGL/Three的基本用法，包括：创建一个场景，摄像机，渲染器，轨道控制（orbitcontrols）。我们也将创建简单的定向光源，加上一些对象（不同的几何形状）和阴影效果。

webgl, 教程

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HTML5 Three.js读取Kinect数据并在网页呈现（人体摇头晃脑动作的捕捉数据3D可视化）

编辑器支持Emmet

快捷键

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