example/test/可调试界面dat.GUI库实现.html

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style type="text/css">
        html,
        body {
            margin: 0;
            height: 100%;
        }

        canvas {
            display: block;
        }
    </style>
</head>

<body onload="draw();">

</body>
<script src="https://johnson2heng.github.io/three.js-demo/lib/three.js"></script>
<script src="https://johnson2heng.github.io/three.js-demo/lib/js/controls/OrbitControls.js"></script>
<script src="https://johnson2heng.github.io/three.js-demo/lib/js/libs/stats.min.js"></script>
<script src="https://johnson2heng.github.io/three.js-demo/lib/js/libs/dat.gui.min.js"></script>
<!--<script src="js/three.js"></script>
<script src="js/OrbitControls.js"></script>
<script src="js/stats.min.js"></script>
<script src="js/dat.gui.min.js"></script>-->
<script>
    var renderer;

    function initRender() {
        renderer = new THREE.WebGLRenderer({
            antialias: true
        });
        renderer.setSize(window.innerWidth, window.innerHeight);
        //告诉渲染器需要阴影效果
        renderer.shadowMap.enabled = true;
        renderer.shadowMap.type = THREE.PCFSoftShadowMap; // 默认的是，没有设置的这个清晰 THREE.PCFShadowMap
        document.body.appendChild(renderer.domElement);
    }

    var camera;

    function initCamera() {
        camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 1000);
        camera.position.set(0, 40, 100);
        camera.lookAt(new THREE.Vector3(0, 0, 0));
    }

    var scene;

    function initScene() {
        scene = new THREE.Scene();
    }

    //初始化dat.GUI简化试验流程
    var gui;

    function initGui() {
        //声明一个保存需求修改的相关数据的对象
        gui = {
            directionalLight: "#ffffff", //点光源
            directionalLightIntensity: 1, //灯光强度
            visible: true, //是否可见
            castShadow: true,
            exponent: 30,
            target: "plane",
            debug: false,
            groundColor: "#00ff00",
            skyColor: "#0000ff",
            hemiLightIntensity: 0.3
        };
        var datGui = new dat.GUI();
        //将设置属性添加到gui当中，gui.add(对象，属性，最小值，最大值）

        datGui.addColor(gui, "skyColor").onChange(function (e) {
            hemiLight.color = new THREE.Color(e);
        });
        datGui.addColor(gui, "groundColor").onChange(function (e) {
            hemiLight.groundColor = new THREE.Color(e);
        });
        datGui.add(gui, "hemiLightIntensity", 0, 1).onChange(function (e) {
            hemiLight.intensity = e;
        });
        datGui.addColor(gui, "directionalLight").onChange(function (e) {
            directionalLight.color = new THREE.Color(e);
        });
        datGui.add(gui, "directionalLightIntensity", 0, 5).onChange(function (e) {
            directionalLight.intensity = e;
        });
        datGui.add(gui, "visible").onChange(function (e) {
            directionalLight.visible = e;
        });
        datGui.add(gui, "castShadow").onChange(function (e) {
            directionalLight.castShadow = e;
        });
        datGui.add(gui, "debug").onChange(function (e) {
            if (e) {
                var debug = new THREE.CameraHelper(directionalLight.shadow.camera);
                debug.name = "debug";
                scene.add(debug);
            } else {
                var debug = scene.getObjectByName("debug");
                scene.remove(debug);
            }
        });
    }

    var hemiLight, ambientLight, directionalLight;

    function initLight() {

        ambientLight = new THREE.AmbientLight("#111111");
        scene.add(ambientLight);

        directionalLight = new THREE.DirectionalLight("#ffffff");
        directionalLight.position.set(-40, 60, -10);

        directionalLight.shadow.camera.near = 20; //产生阴影的最近距离
        directionalLight.shadow.camera.far = 200; //产生阴影的最远距离
        directionalLight.shadow.camera.left = -50; //产生阴影距离位置的最左边位置
        directionalLight.shadow.camera.right = 50; //最右边
        directionalLight.shadow.camera.top = 50; //最上边
        directionalLight.shadow.camera.bottom = -50; //最下面

        //这两个值决定使用多少像素生成阴影 默认512
        directionalLight.shadow.mapSize.height = 1024;
        directionalLight.shadow.mapSize.width = 1024;

        //告诉平行光需要开启阴影投射
        directionalLight.castShadow = true;

        scene.add(directionalLight);
    }

    var cube, plane;

    function initModel() {

        //辅助工具
        var helper = new THREE.AxisHelper(10);
        scene.add(helper);

        //球体
        var sphereGeometry = new THREE.SphereGeometry(10, 30, 30);
        var sphereMaterial = new THREE.MeshLambertMaterial({
            color: 0xeeeeee
        });
        var sphere = new THREE.Mesh(sphereGeometry, sphereMaterial);
        sphere.position.set(-20, 20, 0);

        sphere.castShadow = true;

        scene.add(sphere);

        //立方体
        var cubeGeometry = new THREE.CubeGeometry(10, 10, 10);

        var cubeMaterial = new THREE.MeshLambertMaterial({
            color: 0x00ffff
        });

        cube = new THREE.Mesh(cubeGeometry, cubeMaterial);
        cube.position.x = 30;
        cube.position.y = 5;
        cube.position.z = -5;

        //告诉立方体需要投射阴影
        cube.castShadow = true;

        var originz = new THREE.Vector3(-5.5, 0, 0); //箭头始点坐标
        var terminusz = new THREE.Vector3(0, 0, 280); //箭头终点坐标
        var directionz = new THREE.Vector3().subVectors(sphere.position, cube.position).normalize(); //箭头方向
        var arrowz = new THREE.ArrowHelper(directionz, originz, 40, 0x00ffff);
        cube.add(arrowz); //将箭头加入场景


        scene.add(cube);

        //底部平面
        var planeGeometry = new THREE.PlaneGeometry(5000, 5000, 20, 20);
        var planeMaterial = new THREE.MeshLambertMaterial({
            color: 0xaaaaaa
        });

        plane = new THREE.Mesh(planeGeometry, planeMaterial);
        plane.rotation.x = -0.5 * Math.PI;
        plane.position.y = -0;

        //告诉底部平面需要接收阴影
        plane.receiveShadow = true;

        scene.add(plane);

    }

    //初始化性能插件
    var stats;

    function initStats() {
        stats = new Stats();
        document.body.appendChild(stats.dom);
    }

    //用户交互插件 鼠标左键按住旋转，右键按住平移，滚轮缩放
    var controls;

    function initControls() {

        controls = new THREE.OrbitControls(camera, renderer.domElement);

        // 如果使用animate方法时，将此函数删除
        //controls.addEventListener( 'change', render );
        // 使动画循环使用时阻尼或自转 意思是否有惯性
        controls.enableDamping = true;
        //动态阻尼系数 就是鼠标拖拽旋转灵敏度
        //controls.dampingFactor = 0.25;
        //是否可以缩放
        controls.enableZoom = true;
        //是否自动旋转
        controls.autoRotate = false;
        //设置相机距离原点的最远距离
        controls.minDistance = 50;
        //设置相机距离原点的最远距离
        controls.maxDistance = 200;
        //是否开启右键拖拽
        controls.enablePan = true;
    }

    function render() {
        renderer.render(scene, camera);
    }

    //窗口变动触发的函数
    function onWindowResize() {

        camera.aspect = window.innerWidth / window.innerHeight;
        camera.updateProjectionMatrix();
        render();
        renderer.setSize(window.innerWidth, window.innerHeight);

    }

    function animate() {
        //更新控制器
        render();

        //更新性能插件
        stats.update();

        controls.update();

        requestAnimationFrame(animate);
    }

    function draw() {
        initGui();
        initRender();
        initScene();
        initCamera();
        initLight();
        initModel();
        initControls();
        initStats();

        animate();
        window.onresize = onWindowResize;
    }
</script>

</html>