SOURCE

var SEPARATION = 100, AMOUNTX = 50, AMOUNTY = 50;

var container;
var camera, scene, renderer;

var particles, particle, count = 0;

var mouseX = 0, mouseY = 0;

var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;

init();
animate();

function init() {

    container = document.createElement('div');
    document.body.appendChild(container);

    camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 1, 10000);
    camera.position.z = 1000;

    scene = new THREE.Scene();

    particles = new Array();

    var PI2 = Math.PI * 2;
    var material = new THREE.ParticleCanvasMaterial({

        color: 0xffffff,
        program: function (context) {

            context.beginPath();
            context.arc(0, 0, 1, 0, PI2, true);
            context.fill();

        }

    });

    var i = 0;

    for (var ix = 0; ix < AMOUNTX; ix++) {

        for (var iy = 0; iy < AMOUNTY; iy++) {

            particle = particles[i++] = new THREE.Particle(material);
            particle.position.x = ix * SEPARATION - ((AMOUNTX * SEPARATION) / 2);
            particle.position.z = iy * SEPARATION - ((AMOUNTY * SEPARATION) / 2);
            scene.add(particle);

        }

    }

    renderer = new THREE.CanvasRenderer();
    renderer.setSize(window.innerWidth, window.innerHeight);
    container.appendChild(renderer.domElement);

    document.addEventListener('mousemove', onDocumentMouseMove, false);
    document.addEventListener('touchstart', onDocumentTouchStart, false);
    document.addEventListener('touchmove', onDocumentTouchMove, false);

    //

    window.addEventListener('resize', onWindowResize, false);

}

function onWindowResize() {

    windowHalfX = window.innerWidth / 2;
    windowHalfY = window.innerHeight / 2;

    camera.aspect = window.innerWidth / window.innerHeight;
    camera.updateProjectionMatrix();

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

}

//

function onDocumentMouseMove(event) {

    mouseX = event.clientX - windowHalfX;
    mouseY = event.clientY - windowHalfY;

}

function onDocumentTouchStart(event) {

    if (event.touches.length === 1) {

        event.preventDefault();

        mouseX = event.touches[0].pageX - windowHalfX;
        mouseY = event.touches[0].pageY - windowHalfY;

    }

}

function onDocumentTouchMove(event) {

    if (event.touches.length === 1) {

        event.preventDefault();

        mouseX = event.touches[0].pageX - windowHalfX;
        mouseY = event.touches[0].pageY - windowHalfY;

    }

}

//

function animate() {

    requestAnimationFrame(animate);

    render();


}

function render() {

    camera.position.x += (mouseX - camera.position.x) * .05;
    camera.position.y += (- mouseY - camera.position.y) * .05;
    camera.lookAt(scene.position);

    var i = 0;

    for (var ix = 0; ix < AMOUNTX; ix++) {

        for (var iy = 0; iy < AMOUNTY; iy++) {

            particle = particles[i++];
            particle.position.y = (Math.sin((ix + count) * 0.3) * 50) + (Math.sin((iy + count) * 0.5) * 50);
            particle.scale.x = particle.scale.y = (Math.sin((ix + count) * 0.3) + 1) * 2 + (Math.sin((iy + count) * 0.5) + 1) * 2;

        }

    }

    renderer.render(scene, camera);

    count += 0.1;

}

body {
    background-color: #000000;
    margin: 0px;
    overflow: hidden;
}

a {
    color:#0078ff;
}