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Pen ID
Unlock Campus Themeforest adv

 

Code

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CSS
body {background: #d1684e; -webkit-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select: none; -webkit-touch-callout: none; -webkit-tap-highlight-color: rgba(0, 0, 0, 0);}
#wrap {position: absolute; left: 0; right: 0; top: 0; bottom: 0; overflow: hidden;}
#wrap canvas {position: absolute; left: 50%; top: 50%; width: 500px; height: 500px; margin: -250px 0 0 -250px; -outline: 1px solid #fff;}

.info {position: absolute; left: 0; right: 0; bottom: 0; font-size: 12px; color: #ccc; line-height: 2em; text-align: center;}
JS
var $body = document.body,
		$wrap = document.getElementById('wrap'),

		areawidth = window.innerWidth,
		areaheight = window.innerHeight,

		canvassize = 500,

		length = 30,
		radius = 5.6,

		rotatevalue = 0.035,
		acceleration = 0,
		animatestep = 0,
		toend = false,

		pi2 = Math.PI*2,

		group = new THREE.Group(),
		mesh, ringcover, ring,

		camera, scene, renderer;


	camera = new THREE.PerspectiveCamera(65, 1, 1, 10000);
	camera.position.z = 150;

	scene = new THREE.Scene();
	// scene.add(new THREE.AxisHelper(30));
	scene.add(group);

	mesh = new THREE.Mesh(
		new THREE.TubeGeometry(new (THREE.Curve.create(function() {},
			function(percent) {

				var x = length*Math.sin(pi2*percent),
					y = radius*Math.cos(pi2*3*percent),
					z, t;

				t = percent%0.25/0.25;
				t = percent%0.25-(2*(1-t)*t* -0.0185 +t*t*0.25);
				if (Math.floor(percent/0.25) == 0 || Math.floor(percent/0.25) == 2) {
					t *= -1;
				}
				z = radius*Math.sin(pi2*2* (percent-t));

				return new THREE.Vector3(x, y, z);

			}
		))(), 200, 1.1, 2, true),
		new THREE.MeshBasicMaterial({
			color: 0xffffff
			// , wireframe: true
		})
	);
	group.add(mesh);

	ringcover = new THREE.Mesh(new THREE.PlaneGeometry(50, 15, 1), new THREE.MeshBasicMaterial({color: 0xd1684e, opacity: 0, transparent: true}));
	ringcover.position.x = length+1;
	ringcover.rotation.y = Math.PI/2;
	group.add(ringcover);

	ring = new THREE.Mesh(new THREE.RingGeometry(4.3, 5.55, 32), new THREE.MeshBasicMaterial({color: 0xffffff, opacity: 0, transparent: true}));
	ring.position.x = length+1.1;
	ring.rotation.y = Math.PI/2;
	group.add(ring);

	// fake shadow
	(function() {
		var plain, i;
		for (i = 0; i < 10; i++) {
			plain = new THREE.Mesh(new THREE.PlaneGeometry(length*2+1, radius*3, 1), new THREE.MeshBasicMaterial({color: 0xd1684e, transparent: true, opacity: 0.13}));
			plain.position.z = -2.5+i*0.5;
			group.add(plain);
		}
	})();

	renderer = new THREE.WebGLRenderer({
		antialias: true
	});
	renderer.setPixelRatio(window.devicePixelRatio);
	renderer.setSize(canvassize, canvassize);
	renderer.setClearColor('#d1684e');

	$wrap.appendChild(renderer.domElement);

	$body.addEventListener('mousedown', start, false);
	$body.addEventListener('touchstart', start, false);
	$body.addEventListener('mouseup', back, false);
	$body.addEventListener('touchend', back, false);

	animate();


	function start() {
		toend = true;
	}
	
	function back() {
		toend = false;
	}

	function tilt(percent) {
		group.rotation.y = percent*0.5;
	}

	function render() {

		var progress;

		animatestep = Math.max(0, Math.min(240, toend ? animatestep+1 : animatestep-4));
		acceleration = easing(animatestep, 0, 1, 240);

		if (acceleration > 0.35) {
			progress = (acceleration-0.35)/0.65;
			group.rotation.y = -Math.PI/2 *progress;
			group.position.z = 50*progress;
			progress = Math.max(0, (acceleration-0.97)/0.03);
			mesh.material.opacity = 1-progress;
			ringcover.material.opacity = ring.material.opacity = progress;
			ring.scale.x = ring.scale.y = 0.9 + 0.1*progress;
		}

		renderer.render(scene, camera);

	}

	function animate() {
		mesh.rotation.x += rotatevalue + acceleration;
		render();
		requestAnimationFrame(animate);
	}

	function easing(t,b,c,d) {if((t/=d/2)<1)return c/2*t*t+b;return c/2*((t-=2)*t*t+2)+b;}

Description

Loading animation based on movie "Her" - OS1.
Term
Mon, 11/27/2017 - 21:28

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