Gradient

    //화면 설정
    var scene = new THREE.Scene();

    //카메라 설정
    var camera = new THREE.PerspectiveCamera(75, window.innerWidth/window.innerHeight, 1, 1000);
    camera.position.z = 400;
    scene.add(camera);

    //렌더링 설정
    var renderer = new THREE.WebGLRenderer({ antialias: true, alpha: true });
    renderer.setPixelRatio((window.devicePixelRatio) ? window.devicePixelRatio : 1);
    renderer.setSize(window.innerWidth, window.innerHeight);
    renderer.autoClear = false;
    renderer.setClearColor(0x000000, 0.0);
    document.getElementById('canvas').appendChild(renderer.domElement);

    //오브젝트 설정
    var circle = new THREE.Object3D();
    var skelet = new THREE.Object3D();
    var particle = new THREE.Object3D();

    scene.add(circle);
    scene.add(skelet);
    scene.add(particle);

    //모양 설정
    var geometry = new THREE.TetrahedronGeometry(2, 0);
    var geom = new THREE.IcosahedronGeometry(7, 1);
    var geom2 = new THREE.IcosahedronGeometry(15, 1);

    var material = new THREE.MeshPhongMaterial({
        color: 0xffffff,
        shading: THREE.FlatShading
    });

    var mat = new THREE.MeshPhongMaterial({
        color: 0xffffff,
        shading: THREE.FlatShading
    });

    var mat2 = new THREE.MeshPhongMaterial({
        color: 0xffffff,
        wireframe: true,
        side: THREE.DoubleSide
    });

    //파티클 설정
    for (var i=0; i<700; i++) {
        var mesh = new THREE.Mesh(geometry, material);
        mesh.position.set(Math.random() - 0.5, Math.random() - 0.5, Math.random() - 0.5).normalize();
        mesh.position.multiplyScalar(90 + (Math.random() * 700));
        mesh.rotation.set(Math.random() * 2, Math.random() * 2, Math.random() * 2);
        particle.add(mesh);
    }

    //크기 설정
    var planet = new THREE.Mesh(geom, mat);
    planet.scale.x = planet.scale.y = planet.scale.z = 16;
    circle.add(planet);

    var planet2 = new THREE.Mesh(geom2, mat2);
    planet2.scale.x = planet2.scale.y = planet2.scale.z = 10;
    skelet.add(planet2);

    //조명 설정
    var ambientLight = new THREE.AmbientLight(0x999999);
    scene.add(ambientLight);

    var lights = [];
    lights[0] = new THREE.DirectionalLight( 0xffffff, 1 );
    lights[0].position.set( 1, 0, 0 );
    lights[1] = new THREE.DirectionalLight( 0x11E8BB, 1 );
    lights[1].position.set( 0.75, 1, 0.5 );
    lights[2] = new THREE.DirectionalLight( 0x8200C9, 1 );
    lights[2].position.set( -0.75, -1, 0.5 );
    scene.add(lights[0]);
    scene.add(lights[1]);
    scene.add(lights[2]);

    //애니메이션 설정
    function animate() {
        requestAnimationFrame(animate);

        particle.rotation.x += 0.0000;
        particle.rotation.y -= 0.0040;
        circle.rotation.x -= 0.0020;
        circle.rotation.y -= 0.0030;
        skelet.rotation.x -= 0.0010;
        skelet.rotation.y += 0.0020;
        renderer.clear();
        renderer.render(scene, camera);
    }
    animate();

    //화면 사이즈 설정
    function onWindowResize() {
        camera.aspect = window.innerWidth / window.innerHeight;
        camera.updateProjectionMatrix();
        renderer.setSize(window.innerWidth, window.innerHeight);
    }
    window.addEventListener('resize', onWindowResize);