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              <div id="world"/>

<div id="instructions">Press and hold<br/>to slow down</div>

<div id="credits">
  <p> <a href="https://codepen.io/Yakudoo/"  target="blank">my other codepens</a> | <a href="https://epic.net" target="blank">www.epic.net</a></p>
</div>
            
          
!
            
              @import url(https://fonts.googleapis.com/css?family=Open+Sans:800);

#instructions{
  position:absolute;
  width:100%;
  top:50%;
  margin: auto;
  margin-top:100px;
  font-family:'Open Sans', sans-serif;
  color:#fff;
  font-size:1.2em;
  text-transform: uppercase;
  text-align : center;
}

#world{
  background-color:#8cdfd4;
}

body{
  background-color:#fff;
  overflow:hidden;
}
#credits{
  position:absolute;
  width:100%;
  margin: auto;
  bottom:0;
  margin-bottom:20px;
  font-family:'Open Sans', sans-serif;
  color:#56ac9f;
  font-size:0.7em;
  text-transform: uppercase;
  text-align : center;
}
#credits a {
  color:#56ac9f;
}
            
          
!
            
              

var scene, camera, shadowLight, light, backLight, renderer;
var container,
  HEIGHT,
  WIDTH,
  fieldOfView,
  aspectRatio,
  nearPlane,
  farPlane,
  stats,
  mouseX = 0,
  mouseY = 0,
  windowHalfX,
  windowHalfY,
  distortionAngle = 0,
  shakeAngle = 0,
  shakeAngle2 = 0,
  meteorite, metCore,
  wasteArray = [],
  frequency = 1,
	freqCount = 0,
  metShakeSpeed = .1,
	metRotateSpeed = .1,
  slowMoFactor = 1,
  shakeAmp = 3,
  colorsBright = ['#a3b509', '#79b68a', '#f4da7e', '#ff8f4e', '#9d797d', '#b91b2a', '#b4885c', '#dd6316', '#d9c4b4'],
  colorsDark = ['#000000','#190502', '#1c1005','#23190d', '#380008', '#131913', '#28120a', '#551705', '#471b01'],  
  geometryMeteorite;



initDocument();
initTHREE();
createStats();
createCam();
createLight();
createMeteorite();
animate();
switchFast();

function initDocument() {
  HEIGHT = window.innerHeight;
  WIDTH = window.innerWidth;
  windowHalfX = WIDTH / 2;
  windowHalfY = HEIGHT / 2;
  container = document.getElementById('world');
  window.addEventListener('resize', onWindowResize, false);
  window.addEventListener('mousedown', switchSlow, false);
  window.addEventListener('mouseup', switchFast, false);
  
}

function initTHREE() {
  scene = new THREE.Scene();
  renderer = new THREE.WebGLRenderer({
    alpha: true,
    antialias: true
  });
  renderer.setPixelRatio(window.devicePixelRatio);
  renderer.setSize(WIDTH, HEIGHT);
  container.appendChild(renderer.domElement);
}

function createStats() {
  stats = new Stats();
  stats.domElement.style.position = 'absolute';
  stats.domElement.style.top = '0px';
  stats.domElement.style.right = '0px';
  container.appendChild(stats.domElement);
}

function createCam() {
  fieldOfView = 75;
  aspectRatio = WIDTH / HEIGHT;
  nearPlane = 1;
  farPlane = 3000;
  cameraZ = 800;
  camera = new THREE.PerspectiveCamera(
    fieldOfView,
    aspectRatio,
    nearPlane,
    farPlane);
  camera.position.z = cameraZ;
}

function createLight() {
  shadowLight = new THREE.DirectionalLight(0xffffff, 2);
  shadowLight.position.set(20, 0, 10);
  shadowLight.castShadow = true;
  shadowLight.shadowDarkness = 0.01;
  scene.add(shadowLight);

  light = new THREE.DirectionalLight(0xffffff, .5);
  light.position.set(-20, 0, 20);
  scene.add(light);
  //*
  backLight = new THREE.DirectionalLight(0xffffff, 0.1);
  backLight.position.set(0, 0, -20);
  scene.add(backLight);
  //*/
}

function WasteParticle() {
  this.isFlying = false;
  this.color = hexToRgb(getColor("dark"));
  var threecol = new THREE.Color("rgb("+this.color.r+","+this.color.g+","+this.color.b+")");
  if (Math.random()>.5){
    var w = 110 + Math.random()*30;
    var h = 110 + Math.random()*30;
    var d = 5 + Math.random()*10;
    
  	this.geometry = new THREE.BoxGeometry(w,h,d);  
  }else{
    var scale = 20 + Math.random()*20;
    var nLines = Math.floor(Math.random()*3);
    var nRows = Math.floor(Math.random()*3);
    
  	this.geometry = new THREE.SphereGeometry(scale,nLines,nRows);  
  }
  
  this.material = new THREE.MeshLambertMaterial({
    color: threecol, shading: THREE.FlatShading, transparent: true
  });
  
  this.mesh = new THREE.Mesh(this.geometry, this.material);
  recycleWaste(this);
}

function recycleWaste(p){
  p.mesh.position.x = 0;
  p.mesh.position.y = 0;
  p.mesh.position.z = 0;
  p.mesh.rotation.x = Math.random()*Math.PI*2;
  p.mesh.rotation.y = Math.random()*Math.PI*2;
  p.mesh.rotation.z = Math.random()*Math.PI*2;
  p.mesh.scale.set(.1,.1,.1);
  p.mesh.material.opacity = 0;
  p.color = hexToRgb(getColor("dark"));
  p.mesh.material.color.setRGB(p.color.r/255,p.color.g/255,p.color.b/255);
  p.material.needUpdate = true;
  scene.add(p.mesh);
  wasteArray.push(p);
}
function flyWaste(p){
	var targetPosX, targetPosY, targetSpeed, targetColor;
  p.mesh.material.opacity = 1;
  p.mesh.position.x = -2000;
  p.mesh.position.y = -1500 + Math.random()*2000;
  p.mesh.position.z =  -1000 + Math.random()*1500;
  var s = Math.random()*.2;
  p.mesh.scale.set(s,s,s);
  //*
  targetPosX = 2000;
  targetPosY = p.mesh.position.y + 2500;
  targetSpeed = 1+Math.random()*2;
  targetColor = hexToRgb(getColor("bright"));
  
  TweenMax.to(p.mesh.rotation, targetSpeed*slowMoFactor, { 
    												x:Math.random()*Math.PI*6,
    												y:Math.random()*Math.PI*6,
    												z:Math.random()*Math.PI*6,
    												ease : Linear.easeNone,
  													});
  
  TweenMax.to(p.mesh.position, targetSpeed*slowMoFactor, {
    												x:targetPosX, 
    												y:targetPosY,
                            ease : Linear.easeNone,
                           	onComplete:recycleWaste, 
                            onCompleteParams:[p]
                                    //onUpdate:updateWaste, 
                                    //onUpdateParams:[p] 
                            });
  //*/
  
}


function dropWaste(p){
  
  var targetPosX,targetPosY, targetSpeed, targetColor;
  
  p.mesh.material.opacity = 1;
  p.mesh.position.x = metCore.position.x - 40 - Math.random()*20;
  p.mesh.position.y = metCore.position.y - 40 + Math.random()*50;
  p.mesh.position.z = metCore.position.z;
  p.mesh.scale.set(.1,.1,.1);
  
  targetPosX = p.mesh.position.x + 600 + Math.random()*300;
  targetPosY = p.mesh.position.y + 600 + Math.random()*300;
  targetSpeed = 1+Math.random()*2;
  targetColor = hexToRgb(getColor("bright"));
  
  
  TweenMax.to(p.mesh.rotation, targetSpeed*slowMoFactor, { 
    												x:Math.random()*Math.PI*6,
    												y:Math.random()*Math.PI*6,
    												z:Math.random()*Math.PI*6
  													});
  TweenMax.to(p.mesh.scale, targetSpeed*slowMoFactor, {
    												bezier:[{x:1, y:1, z:1}, {x:.01, y:.01, z:.01}]
                            });
  TweenMax.to(p.mesh.position, targetSpeed*slowMoFactor, {
    												x:targetPosX, z:-100,
    												y:targetPosY,
    												
                            ease : Strong.easeInOut,
                           	onComplete:recycleWaste, 
                            onCompleteParams:[p]
                                    //onUpdate:updateWaste, 
                                    //onUpdateParams:[p] 
                            });
  
  TweenMax.to(p.color, 1*slowMoFactor, {
    									r : targetColor.r,
    									g : targetColor.g,
    									b : targetColor.b,
    									ease:Strong.easeIn,
    									onUpdate:updateWaste, 
                      onUpdateParams:[p] 
                     });
                     
}

function updateWaste(p){
	p.mesh.material.color.setRGB(p.color.r/255,p.color.g/255,p.color.b/255);
  p.material.needUpdate = true;
}

function getWasteParticle(){
  if (wasteArray.length){
    return wasteArray.pop();
  }else{
    return new WasteParticle();
  }
}

function getColor(value){
  if (value=="dark"){
    return colorsDark[Math.floor(Math.random()*colorsDark.length)];
  }else{
    return colorsBright[Math.floor(Math.random()*colorsBright.length)];
  }
    
}

function createMeteorite() {
  
  meteorite = new THREE.Object3D();
  geometryCore = new THREE.BoxGeometry(80, 80, 80);
  materialCore = new THREE.MeshLambertMaterial({
    color: 0xd44642,
    shading: THREE.FlatShading
  });
  metCore = new THREE.Mesh(geometryCore, materialCore);
  metCore.geometry.__dirtyVertices = true;
  metCore.geometry.dynamic = true; 

  //*
  for (var i = 0; i < metCore.geometry.vertices.length; i++) {
    metCore.geometry.vertices[i].x += -10 + Math.random() * 20;
    metCore.geometry.vertices[i].y += -10 + Math.random() * 20;
    metCore.geometry.vertices[i].z += -10 + Math.random() * 20;
  }
	 
  meteorite.add(metCore);
  
  
  //*/
  scene.add(meteorite);

}

function animate() {
  requestAnimationFrame(animate);
  updateCore();
  updateParticlesLoad();
  render();
  stats.update();
}

function updateParticlesLoad(){
  if (freqCount % frequency == 0){
  	createDroppingWaste();
  }
  if (freqCount % 5 == 0){
    createFlyingWaste();
  }
  freqCount++;
}

function switchSlow(){
  metShakeSpeed = .1;
  metRotateSpeed = .05;
  shakeAmp = 1;
  frequency = 10;
  slowMoFactor = 3;
 	/*
  for (var i=0; i<meteorite.children.length; i++){
    var o = meteorite.children[i];
    TweenLite.killTweensOf(o.position);
  }
  */
}

function switchFast(){
  metShakeSpeed = .2;
  metRotateSpeed = .25;
  shakeAmp = 2;
  frequency = 2;
  slowMoFactor = 1;
  /*
  for (var i=0; i<meteorite.children.length; i++){
    var o = meteorite.children[i];
    TweenLite.killTweensOf(o.position);
  }
  */
}

function updateCore(){
  metCore.rotation.z += metRotateSpeed;
  metCore.rotation.x += metRotateSpeed/2;
  shakeAngle += metShakeSpeed;
  metCore.position.x = (Math.cos(shakeAngle) * shakeAmp);
  metCore.position.y = Math.cos(shakeAngle * 1.5) * shakeAmp*2;
  metCore.position.z = Math.cos(shakeAngle * 2) * shakeAmp*3;
}

function createDroppingWaste(){
  var p = getWasteParticle();
  dropWaste(p);
}

function createFlyingWaste(){
  var p = getWasteParticle();
  flyWaste(p);
}


function render() {
  renderer.render(scene, camera);
}

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 rgbToHex(r, g, b) {
    return "0x" + ((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1);
}

function hexToRgb(hex) {
  var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
  return result ? {
    r: parseInt(result[1], 16),
    g: parseInt(result[2], 16),
    b: parseInt(result[3], 16)
  } : null;
}
            
          
!
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