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Three.js--(三)光源展示

时间:2019-12-30 11:44:30      阅读:115      评论:0      收藏:0      [点我收藏+]

标签:nload   cti   lan   turn   rip   mamicode   5*   enable   repeat   

项目演示  https://5mfivemeter.github.io/THREE/chapter03.html

项目截图

技术图片

源码地址  https://github.com/5mFiveMeter/5mFiveMeter.github.io/blob/master/THREE/chapter03.html

源码展示

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        html,body{margin: 0;padding: 0;overflow: hidden;}
    </style>
    <script src="three.js"></script>
    <script src="stats.js"></script>
    <script src="dat.gui.js"></script>
</head>
<body>

<div id="Stats-output"></div>
<div id="WebGL-output"></div>

<script>

    function init(){

        var stats = initStats();

        //场景/相机/渲染器
        var scene = new THREE.Scene();

        var camera = new THREE.PerspectiveCamera(45,window.innerWidth/window.innerHeight,0.1,1000);
        camera.position.set(-50,50,50);
        camera.lookAt(scene.position);

        var renderer = new THREE.WebGLRenderer();
        renderer.setClearColor(new THREE.Color(0xEEEEEE));
        renderer.setSize(window.innerWidth,window.innerHeight);
        renderer.shadowMap.enabled = true;
        //底部 纹理加载
        var textureGrass = new THREE.TextureLoader().load("./assit/textures/grasslight-big.jpg");
        textureGrass.wrapS = THREE.RepeatWrapping;
        textureGrass.wrapT = THREE.RepeatWrapping;
        textureGrass.repeat.set(5, 5);
        var planeGeometry = new THREE.PlaneGeometry(1000,1000,20,20);
        var planeMeterial = new THREE.MeshPhongMaterial({map:textureGrass});
        var plane = new THREE.Mesh(planeGeometry,planeMeterial);
        plane.rotation.x = -0.5*Math.PI;
        plane.position.set(15,0,0);
        plane.receiveShadow = true;
        scene.add(plane);
        //放入一个块
        var cubeGeometry = new THREE.BoxGeometry(4,4,4);
        var cubeMaterial = new THREE.MeshLambertMaterial({color:0xff0000});
        var cube = new THREE.Mesh(cubeGeometry,cubeMaterial);
        cube.castShadow = true;
        cube.position.set(-4,3,0);
        scene.add(cube);
        //放入一个球
        var sphereGeometry = new THREE.SphereGeometry(4,20,20);
        var sphereMaterial = new THREE.MeshLambertMaterial({color:0x77777ff});
        var sphere = new THREE.Mesh(sphereGeometry,sphereMaterial);
        sphere.position.set(20,0,2);
        sphere.castShadow = true;
        scene.add(sphere);
        //环境光
        var ambientColor = "#957a7a";
        var AmbientLight = new THREE.AmbientLight(ambientColor);
        scene.add(AmbientLight);
        //聚光灯
        var spotLight = new THREE.SpotLight(0xffffff);
        spotLight.position.set(-40,60,-10);
        spotLight.castShadow = true;
        spotLight.intensity=0.2;
        spotLight.visible=false;
        scene.add(spotLight);
        //漂浮的点光源
        var pointColor = "#ccffcc";
        var pointLight = new THREE.PointLight(pointColor);
        pointLight.distance=100;
        pointLight.castShadow = true;
        scene.add(pointLight);
        var sphereLightGeometry = new THREE.SphereGeometry(0.5);
        var sphereLightMaterial = new THREE.MeshBasicMaterial({color:0xac6c25});
        var sphereLightMesh = new THREE.Mesh(sphereLightGeometry,sphereLightMaterial);
        sphereLightMesh.castShadow = true;
        sphereLightMesh.position = new THREE.Vector3(3,0,3);
        scene.add(sphereLightMesh);

        scene.add(spotLight);
        //将渲染器放入dom
        document.getElementById("WebGL-output").appendChild(renderer.domElement);
        //--------------------------------
        var step = 0;
        var invert = 1;
        var phase = 0;
        var controls = {
            rotationSpeed:0.02,
            bouncingSpeed:0.03,
            ambientColor:ambientColor,
            disableSpotlight:true,
            intensity:2,
            distance:100
        };


        var gui = new dat.GUI();
        gui.addColor(controls,"ambientColor").onChange(function(color){
            AmbientLight.color = new THREE.Color(color);
        });
        gui.add(controls,"disableSpotlight").onChange(function(bln){
            spotLight.visible = !bln;
        });
        gui.add(controls,"intensity",0,5).onChange(function(intensity){
            pointLight.intensity = intensity;
        });
        gui.add(controls,"distance",0,200).onChange(function(dist){
            pointLight.distance = dist;
        });


        renderScene();
        function renderScene(){
            stats.update();
            cube.rotation.x += controls.rotationSpeed;
            cube.rotation.y += controls.rotationSpeed;
            cube.rotation.z += controls.rotationSpeed;
            step += controls.bouncingSpeed;
            sphere.position.x = 20 + ( 10 * (Math.cos(step)));
            sphere.position.y = 2 + ( 10 * Math.abs(Math.sin(step)));
            //点光源移动
            if (phase > 2 * Math.PI) {
                invert = invert * -1;
                phase -= 2 * Math.PI;
            } else {
                phase += controls.rotationSpeed;
            }
            sphereLightMesh.position.z = +(7 * (Math.sin(phase)));
            sphereLightMesh.position.x = +(14 * (Math.cos(phase)));
            sphereLightMesh.position.y = 5;

            if (invert < 0) {
                var pivot = 14;
                sphereLightMesh.position.x = (invert * (sphereLightMesh.position.x - pivot)) + pivot;
            }
            pointLight.position.copy(sphereLightMesh.position);

            requestAnimationFrame(renderScene);
            renderer.render(scene,camera);
        }
        function initStats(){
            var stats = new Stats();
            stats.setMode(0);
            stats.domElement.style.position = "absolute";
            stats.domElement.style.left = "0";
            stats.domElement.style.top = "0";
            document.getElementById("Stats-output").appendChild(stats.domElement);
            return stats;
        }
        window.addEventListener("resize",function(){
            camera.aspect = window.innerWidth/window.innerHeight;
            camera.updateProjectionMatrix();
            renderer.setSize(window.innerWidth,window.innerHeight);
        })
    }
    window.onload = init;
</script>

</body>
</html>

Three.js--(三)光源展示

标签:nload   cti   lan   turn   rip   mamicode   5*   enable   repeat   

原文地址:https://www.cnblogs.com/fivemeter/p/12118343.html

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