09-THREE.JS 物体缩放，坐标，旋转，位移，是否可见

<!DOCTYPE html>

<html>

<head>

    <title></title>

    <script src="https://cdn.bootcss.com/three.js/r67/three.js"></script>

    <script src="https://cdn.bootcss.com/stats.js/r10/Stats.min.js"></script>

    <script type="text/javascript" src="https://cdn.bootcss.com/dat-gui/0.7.3/dat.gui.js"></script>

    <style>

        body {

            margin: 0;

            overflow: hidden;

        }

    </style>

</head>

<body>

<div id="Stats-output">

</div>

<div id="WebGL-output">

</div>

<script type="text/javascript">

    // 初始化

    function init() {

        var stats = initStats();

        // 创建一个场景

        var scene = new THREE.Scene();

        // 创建一个相机

        var camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 1000);

        // 创建渲染

        var renderer = new THREE.WebGLRenderer();

        renderer.setClearColor(new THREE.Color(0xEEEEEE, 1.0));

        renderer.setSize(window.innerWidth, window.innerHeight);

        renderer.shadowMapEnabled = true;

        // 创建一个地面

        var planeGeometry = new THREE.PlaneGeometry(60, 40, 1, 1);

        var planeMaterial = new THREE.MeshLambertMaterial({color: 0xffffff});

        var plane = new THREE.Mesh(planeGeometry, planeMaterial);

        plane.receiveShadow = true;

        // 旋转地面 保持水平

        plane.rotation.x = -0.5 * Math.PI;

        plane.position.x = 0;

        plane.position.y = 0;

        plane.position.z = 0;

        // 在场景中添加水平面

        scene.add(plane);

        // 相机位置设置

        camera.position.x = -30;

        camera.position.y = 40;

        camera.position.z = 30;

        camera.lookAt(scene.position);

        // 添加自然光

        var ambientLight = new THREE.AmbientLight(0x0c0c0c);

        scene.add(ambientLight);

        // 添加聚光灯

        var spotLight = new THREE.SpotLight(0xffffff);

        spotLight.position.set(-40, 60, 020);

        spotLight.castShadow = true;

        scene.add(spotLight);

        // 追加到DOM节点中去

        document.getElementById("WebGL-output").appendChild(renderer.domElement);

        var step = 0;

        var controls = new function () {

            this.scaleX = 1;

            this.scaleY = 1;

            this.scaleZ = 1;

            this.positionX = 0;

            this.positionY = 4;

            this.positionZ = 0;

            this.rotationX = 0;

            this.rotationY = 0;

            this.rotationZ = 0;

            this.scale = 1;

            this.translateX = 0;

            this.translateY = 0;

            this.translateZ = 0;

            this.visible = true;

            this.translate = function () {

                //沿着xyz位移

                cube.translateX(controls.translateX);

                cube.translateY(controls.translateY);

                cube.translateZ(controls.translateZ);

                //设置xyz坐标

                controls.positionX = cube.position.x;

                controls.positionY = cube.position.y;

                controls.positionZ = cube.position.z;

            }

        };

        //创建长方体  光照材质

        var material = new THREE.MeshLambertMaterial({color: 0x44ff44});

        var geom = new THREE.BoxGeometry(5, 8, 3);

        var cube = new THREE.Mesh(geom, material);

        cube.position.y = 4;

        cube.castShadow = true;

        scene.add(cube);

        var gui = new dat.GUI();

        guiScale = gui.addFolder('scale');

        guiScale.add(controls, 'scaleX', 0, 5);

        guiScale.add(controls, 'scaleY', 0, 5);

        guiScale.add(controls, 'scaleZ', 0, 5);

        guiPosition = gui.addFolder('position');

        var contX = guiPosition.add(controls, 'positionX', -10, 10);

        var contY = guiPosition.add(controls, 'positionY', -4, 20);

        var contZ = guiPosition.add(controls, 'positionZ', -10, 10);

        contX.listen();

        contX.onChange(function (value) {

            cube.position.x = controls.positionX;

        });

        contY.listen();

        contY.onChange(function (value) {

            cube.position.y = controls.positionY;

        });

        contZ.listen();

        contZ.onChange(function (value) {

            cube.position.z = controls.positionZ;

        });

        guiRotation = gui.addFolder('rotation');

        guiRotation.add(controls, 'rotationX', -4, 4);

        guiRotation.add(controls, 'rotationY', -4, 4);

        guiRotation.add(controls, 'rotationZ', -4, 4);

        guiTranslate = gui.addFolder('translate');

        guiTranslate.add(controls, 'translateX', -10, 10);

        guiTranslate.add(controls, 'translateY', -10, 10);

        guiTranslate.add(controls, 'translateZ', -10, 10);

        guiTranslate.add(controls, 'translate');

        gui.add(controls, 'visible');

        render();

        function render() {

            stats.update();

            cube.visible = controls.visible;

            cube.rotation.x = controls.rotationX;

            cube.rotation.y = controls.rotationY;

            cube.rotation.z = controls.rotationZ;

            cube.scale.set(controls.scaleX, controls.scaleY, controls.scaleZ);

            requestAnimationFrame(render);

            renderer.render(scene, camera);

        }

        function initStats() {

            var stats = new Stats();

            stats.setMode(0); // 0: fps, 1: ms

            stats.domElement.style.position = 'absolute';

            stats.domElement.style.left = '0px';

            stats.domElement.style.top = '0px';

            document.getElementById("Stats-output").appendChild(stats.domElement);

            return stats;

        }

    }

    window.onload = init

</script>

</body>

</html>
巴特西

09-THREE.JS 物体缩放，坐标，旋转，位移，是否可见

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