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leapmotiontest.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Source: Barry Martin's Hopalong Orbits Visualizer</title>
<meta property="title" content="Barry Martin's Hopalong Orbits Visualizer - WebGL Experiment">
<meta property="description" content="An interactive flight through attractor orbits generated using Barry Martin's Hopalong formula.">
<meta property="og:title" content="Barry Martin's Hopalong Orbits Visualizer - WebGL Experiment">
<meta property="og:image" content="http://iacopoapps.appspot.com/hopalongwebgl/image.jpg">
<meta property="og:description" content="An interactive flight through attractor orbits generated using Barry Martin's Hopalong formula.">
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<style>
body {
background-color: #000000;
margin: 0px;
overflow: hidden;
font-family:Monospace;
font-size:13px;
text-align:center;
font-weight: bold;
text-align:center;
}
</style>
</head>
<body>
<script src="js/three.min.js"></script>
<script src="jaanga_StereoEffect.js"></script>
<script src="jaanga_DeviceOrientationControls.js"></script>
<script src="jaanga_DetectScreenSize.js"></script>
<script>
/*
* AUTHOR: Iacopo Sassarini
*/
//Consants
var VISUALS_VISIBLE = true;
var SCALE_FACTOR = 1000;
var CAMERA_BOUND = 200;
var NUM_POINTS_SUBSET = 40000;
var NUM_SUBSETS = 7;
var NUM_POINTS = NUM_POINTS_SUBSET * NUM_SUBSETS;
var NUM_LEVELS = 5;
var LEVEL_DEPTH = 400;
var DEF_BRIGHTNESS = 1;
var DEF_SATURATION = 0.7;
// Orbit parameters constraints
var A_MIN = -30;
var A_MAX = 30;
var B_MIN = .2;
var B_MAX = 1.8;
var C_MIN = 5;
var C_MAX = 17;
var D_MIN = 0;
var D_MAX = 10;
var E_MIN = 0;
var E_MAX = 12;
// Orbit parameters
var a, b, c, d, e;
// Orbiut data
var orbit = {
subsets: [],
xMin: 0,
xMax: 0,
yMin: 0,
yMax: 0,
scaleX: 0,
scaleY: 0
}
var geometry = new THREE.Geometry();
geometry.vertices.push(
new THREE.Vector3( -10, 10, 0 ),
new THREE.Vector3( -10, -10, 0 ),
new THREE.Vector3( 10, -10, 0 ));
var vertex = geometry.vertices.push(new THREE.Vector3( 0, 1, 2 ))
// Initialize data points
for (var i = 0; i < NUM_SUBSETS; i++){
var subsetPoints = [];
for (var j = 0; j < NUM_POINTS_SUBSET; j++){
subsetPoints[j] = {
x: 0,
y: 0,
v1: new THREE.Vector3(0, 0, 0)
};
}
orbit.subsets.push(subsetPoints);
}
var container;
var camera, scene, renderer, composer, hueValues = [];
var mouseX = 0, mouseY = 0;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
var speed = 8;
var rotationSpeed = 0;
init();
animate();
function init() {
sprite1 = THREE.ImageUtils.loadTexture( "https://s3-us-west-1.amazonaws.com/danielfiles/THEREALGALAXY.png" );
container = document.createElement( 'div' );
document.body.appendChild( container );
camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 3 * SCALE_FACTOR );
camera.position.z = SCALE_FACTOR/2;
scene = new THREE.Scene();
scene.fog = new THREE.FogExp2( 0x000000, 0.0011);
generateOrbit();
for (var s = 0; s < NUM_SUBSETS; s++){hueValues[s] = Math.random();}
// Create particle systems
for (var k = 0; k < NUM_LEVELS; k++){
for (var s = 0; s < NUM_SUBSETS; s++){
var geometry = new THREE.Geometry();
for (var i = 0; i < NUM_POINTS_SUBSET; i++){
geometry.vertices.push( orbit.subsets[s][i].vertex);
}
var materials = new THREE.ParticleBasicMaterial( { size: (3 ), map: sprite1, blending: THREE.AdditiveBlending, depthTest: false, transparent : true } );
materials.color.setHSL(hueValues[s], DEF_SATURATION, DEF_BRIGHTNESS);
var particles = new THREE.ParticleSystem( geometry, materials );
particles.myMaterial = materials;
particles.myLevel = k;
particles.mySubset = s;
particles.position.x = 0;
particles.position.y = 0;
particles.position.z = - LEVEL_DEPTH * k - (s * LEVEL_DEPTH / NUM_SUBSETS);
particles.needsUpdate = 0;
scene.add( particles );
}
}
// Setup renderer and effects
renderer = new THREE.WebGLRenderer( { clearColor: 0x000000, clearAlpha: 1, antialias: false } );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
// Setup listeners
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
document.addEventListener( 'touchstart', onDocumentTouchStart, false );
document.addEventListener( 'touchmove', onDocumentTouchMove, false );
document.addEventListener( 'keydown', onKeyDown, false );
window.addEventListener( 'resize', onWindowResize, false );
// Schedule orbit refeneration
setInterval(updateOrbit, 7000);
}
function animate() {
requestAnimationFrame( animate );
render();
}
function render() {
if (camera.position.x >= - CAMERA_BOUND && camera.position.x <= CAMERA_BOUND){
camera.position.x += ( mouseX - camera.position.x ) * 0.05;
if (camera.position.x < - CAMERA_BOUND) camera.position.x = -CAMERA_BOUND;
if (camera.position.x > CAMERA_BOUND) camera.position.x = CAMERA_BOUND;
}
if (camera.position.y >= - CAMERA_BOUND && camera.position.y <= CAMERA_BOUND){
camera.position.y += ( - mouseY - camera.position.y ) * 0.05;
if (camera.position.y < - CAMERA_BOUND) camera.position.y = -CAMERA_BOUND;
if (camera.position.y > CAMERA_BOUND) camera.position.y = CAMERA_BOUND;
}
camera.lookAt( scene.position );
for( i = 0; i < scene.children.length; i++ ) {
var object = scene.children[i]
object.position.z += speed;
object.rotation.z += rotationSpeed;
if (object.position.z > camera.position.z){
object.position.z = - (NUM_LEVELS -1) * LEVEL_DEPTH;
if (object.needsUpdate == 1){ //
object.geometry.__dirtyVertices = true;
object.myMaterial.color.setHSL(hueValues[object.mySubset], DEF_SATURATION, DEF_BRIGHTNESS); //
object.needsUpdate = 0;
}
}
}
renderer.render( scene, camera );
}
///////////////////////////////////////////////
// Hopalong Orbit Generator
///////////////////////////////////////////////
function updateOrbit(){
generateOrbit();
for (var s = 0; s < NUM_SUBSETS; s++){
hueValues[s] = Math.random();
}
for( i = 0; i < scene.children.length; i++ ) {
var object = scene.children[i]
object.needsUpdate = 1;
}
}
function generateOrbit(){
var x, y, z, x1;
x = 9
var idx = 0;
prepareOrbit();
// Using local vars should be faster
var al = a;
var bl = b;
var cl = c;
var dl = d;
var el = e;
var subsets = orbit.subsets;
var num_points_subset_l = NUM_POINTS_SUBSET;
var num_points_l = NUM_POINTS;
var scale_factor_l = SCALE_FACTOR;
var xMin = 0, xMax = 0, yMin = 0, yMax = 0;
for (var s = 0; s < NUM_SUBSETS; s++){
// Use a different starting point for each orbit subset
x = s * .005 * (0.5-Math.random());
y = s * .005 * (0.5-Math.random());
var curSubset = subsets[s];
for (var i = 0; i < num_points_subset_l; i++){
// Iteration formula (generalization of the Barry Martin's original one)
z = (dl + Math.sqrt(Math.abs(bl * x - cl)));
if (x > 0) {x1 = y - z;}
else if (x == 0) {x1 = y;}
else {x1 = y + z;}
y = al - x;
x = x1 + el;
curSubset[i].x = x;
curSubset[i].y = y;
if (x < xMin) {xMin = x;}
else if (x > xMax) {xMax = x;}
if (y < yMin) {yMin = y;}
else if (y > yMax) {yMax = y;}
idx++;
}
}
var scaleX = 2 * scale_factor_l / (xMax - xMin);
var scaleY = 2 * scale_factor_l / (yMax - yMin);
orbit.xMin = xMin;
orbit.xMax = xMax;
orbit.yMin = yMin;
orbit.yMax = yMax;
orbit.scaleX = scaleX;
orbit.scaleY = scaleY;
// Normalize and update vertex data
for (var s = 0; s < NUM_SUBSETS; s++){
var curSubset = subsets[s];
for (var i = 0; i < num_points_subset_l; i++){
curSubset[i].x = scaleX * (curSubset[i].x - xMin) - scale_factor_l;
curSubset[i].y = scaleY * (curSubset[i].y - yMin) - scale_factor_l;
}
}
}
function prepareOrbit(){
shuffleParams();
orbit.xMin = 0;
orbit.xMax = 0;
orbit.yMin = 0;
orbit.yMax = 0;
}
function shuffleParams() {
a = A_MIN + Math.random() * (A_MAX - A_MIN);
b = B_MIN + Math.random() * (B_MAX - B_MIN);
c = C_MIN + Math.random() * (C_MAX - C_MIN);
d = D_MIN + Math.random() * (D_MAX - D_MIN);
e = E_MIN + Math.random() * (E_MAX - E_MIN);
}
///////////////////////////////////////////////
// Event listeners
///////////////////////////////////////////////
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 onWindowResize( event ) {
windowHalfX = window.innerWidth / 2;
windowHalfY = window.innerHeight / 2;
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function onKeyDown(event){
if(event.keyCode == 38 && speed < 20) speed += .5;
else if(event.keyCode == 40 && speed > 0) speed -= .5;
else if(event.keyCode == 37) rotationSpeed += .001;
else if(event.keyCode == 39) rotationSpeed -= .001;
else if(event.keyCode == 72 || event.keyCode == 104) toggleVisuals();
}
</script>
<div style="cursor: pointer; width: 80px; opacity: 0.9; z-index: 10001; position: absolute; top: 5px; right: 5px;"><div style="padding: 2px 0px 3px; background-color: rgb(8, 8, 24);"><div style="font-family: Helvetica, Arial, sans-serif; text-align: left; font-size: 9px; color: rgb(0, 255, 255); margin: 0px 0px 1px 3px;"><span style="font-weight:bold">60 FPS</span> (0-61)</div><canvas width="74" height="30" style="display: block; margin-left: 3px;"></canvas></div><div style="padding: 2px 0px 3px; display: none; background-color: rgb(8, 24, 8);"><div style="font-family: Helvetica, Arial, sans-serif; text-align: left; font-size: 9px; color: rgb(0, 255, 0); margin: 0px 0px 1px 3px;"><span style="font-weight:bold">16 MS</span> (3-5012156)</div><canvas width="74" height="30" style="display: block; margin-left: 3px;"></canvas></div><div style="padding: 2px 0px 3px; display: none; background-color: rgb(24, 8, 13);"><div style="font-family: Helvetica, Arial, sans-serif; text-align: left; font-size: 9px; color: rgb(255, 0, 128); margin: 0px 0px 1px 3px;"><span style="font-weight:bold">98 MB</span> (93-104)</div><canvas width="74" height="30" style="display: block; margin-left: 3px;"></canvas></div></div>
</body></html>