깜박했다.

	var renderer = new THREE.WebGLRenderer({
        antialias: true,
        alpha: true
    });
    renderer.setSize(window.innerWidth, window.innerHeight);
    document.body.appendChild(renderer.domElement);
    window.addEventListener('resize', onWindowResize, false);

    function onWindowResize() {
        camera.aspect = window.innerWidth / window.innerHeight;
        camera.updateProjectionMatrix();
        renderer.setSize(window.innerWidth, window.innerHeight);
    }
    var camera = new THREE.PerspectiveCamera(25, window.innerWidth / window.innerHeight, 1, 500);
    var scene = new THREE.Scene();
    scene.fog = new THREE.FogExp2(0x000000, 0.08);
    camera.position.set(0, 0, 10);

    var group3d = new THREE.Object3D();
    var geometry = new THREE.IcosahedronGeometry(1, 1);
    var gparticular = new THREE.CircleGeometry(1, 3);
    var bparticular = new THREE.CircleGeometry(1, 3);

    var material = new THREE.MeshPhysicalMaterial({
        color: 0xFFFFFFF,
        shading: THREE.FlatShading,
        side: THREE.DoubleSide
    });
    var wmaterial = new THREE.MeshNormalMaterial({
        color: 0xFFFFFF,
        wireframe: true
    });
    var gmaterial = new THREE.MeshPhongMaterial({
        color: 0xFFFFFF,
        side: THREE.DoubleSide
    });

    function mathRandom(num = 3) {
        var mathnum = -Math.random() * num + Math.random() * num;
        return mathnum;
    }

    for (var i = 1; i < 300; i++) {
        var pscale = 0.001 + Math.abs(mathRandom(0.03));
        var particular = new THREE.Mesh(gparticular, gmaterial);
        particular.position.set(mathRandom(), mathRandom(), mathRandom());
        particular.rotation.set(mathRandom(), mathRandom(), mathRandom());
        particular.scale.set(pscale, pscale, pscale);

        group3d.add(particular);
    }

    var cube = new THREE.Mesh(geometry, material);
    var wcube = new THREE.Mesh(geometry, wmaterial);
    var bcube = new THREE.Mesh(bparticular, wmaterial);

    bcube.scale.set(1.5, 1.5, 1.5);
    bcube.position.z = -1;

    var scaleSet = 0.7;
    cube.scale.set(scaleSet, scaleSet, scaleSet);

    TweenMax.to(cube.scale, 1, {
        x: 1,
        ease: Elastic.easeOut,
        yoyo: true,
        repeat: -1,
        delay: 0
    });
    TweenMax.to(cube.scale, 1, {
        y: 1,
        ease: Elastic.easeOut,
        yoyo: true,
        repeat: -1,
        delay: 0.05
    });
    TweenMax.to(cube.scale, 1, {
        z: 1,
        ease: Elastic.easeOut,
        yoyo: true,
        repeat: -1,
        delay: 0.3
    });

    function cameraSet(num) {
        TweenMax.to(camera.position, 2, {
            z: num,
            ease: Power3.easeInOut,
            yoyo: false,
            repeat: 0
        });
    }

    var ambientLight = new THREE.AmbientLight(0x777777, 0.2);
    var lightFront = new THREE.PointLight(0xFF00FF, 1);
    var lightBack = new THREE.PointLight(0x8800FF, 0.5);

    lightFront.castShadow = true;

    lightFront.position.set(10, 10, 5);
    lightBack.position.set(-5, -10, -15);

    scene.add(lightBack);
    scene.add(lightFront);
    scene.add(ambientLight);

    cube.add(wcube);
    scene.add(bcube);
    group3d.add(cube);
    scene.add(group3d);

    function onchangeCamera() {
        scene.rotation.y = 0;
        TweenMax.to(scene.rotation, 3, {
            y: 360 * Math.PI / 180,
            ease: Power3.easeInOut
        });
    }

    var numRot = 0.001;

    function animate() {
        requestAnimationFrame(animate);
        group3d.rotation.x += numRot;
        group3d.rotation.y += numRot;
        group3d.rotation.z += numRot;

        bcube.rotation.z += numRot;

        renderer.render(scene, camera);
    }
    animate();