cssAudio - Activefile-genericCSS - ActiveGeneric - ActiveHTML - ActiveImage - ActiveJS - ActiveSVG - ActiveText - Activefile-genericVideo - ActiveLovehtmlicon-new-collectionicon-personicon-teamlog-outoctocatpop-outspinnerstartv

Pen Settings

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource

You're using npm packages, so we've auto-selected Babel for you here, which we require to process imports and make it all work. If you need to use a different JavaScript preprocessor, remove the packages in the npm tab.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource

Use npm Packages

We can make npm packages available for you to use in your JavaScript. We use webpack to prepare them and make them available to import. We'll also process your JavaScript with Babel.

⚠️ This feature can only be used by logged in users.

Code Indentation

     

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

            
              html, body
{
  margin:0;
  overflow:hidden;
}
            
          
!
            
              
function HSLA(h, s, l, a)
{
    this.h = h;
    this.s = s;
    this.l = l;
    this.a = a === 0 ? 0 : (a ? a : 1);
}

HSLA.prototype = {
    clone : function()
    {
      return new HSLA(this.h, this.s, this.l, this.a);
    },

    toString : function()
    {
      var h = Math.round(((this.h%360)+360)%360);
      var s = Math.round(this.s);
      var l = Math.round(this.l);
      return "hsla(" + h + ", " + s + "%, " + l + "%, " + this.a + ")";
    }
}



function Particle()
{
    this.x = this.y = 0;
    this.vx = this.vy = 0;
    this.scale = 1;
}


function Line(color, id, polars)
{
    this.pts = [];
    this.color = color;
    this.segment = 15 + Math.random() * 15;
    this.nPts = 15 + Math.floor(Math.random() * 10);

    this.id = id;
    this.polars = polars;
    this.ratio = 0.5 + Math.random() * 0.5;
    this.ratio = Math.random();

    for(var i = 0; i < this.nPts; i++)
    {
      var p = new Particle();
      p.x = 2 * (Math.random() * 2 - 1) * this.nPts * this.segment;
      p.y = 2 * (Math.random() * 2 - 1) * this.nPts * this.segment;
      this.pts[i] = p;
    }

    this.pSpeed = 0.1;
    this.friction = 0.99;
    this.width = Math.pow(Math.random(), 2) * 4 + 0.5;

    this.update();
}

Line.prototype = {

    update : function()
    {
      var p = this.pts[0];
      var r = this.polars[this.id];
      var a = this.polars[this.id + 1];
      p.x = this.ratio * r * Math.cos(a);
      p.y = this.ratio * r * Math.sin(a);
      for(var i = 1; i < this.nPts; i++)
      {
        p = this.pts[i];
        p.vx += this.pSpeed * (2 * Math.random() - 1);
        p.vy += this.pSpeed * (2 * Math.random() - 1);
        p.vx += 0.000025 * p.x;
        p.vy += 0.000025 * p.y;
        p.vx *= this.friction;
        p.vy *= this.friction;
        p.x += p.vx;
        p.y += p.vy;

        var p2 = this.pts[i - 1];
        var dx = p2.x - p.x;
        var dy = p2.y - p.y;
        var d = dx * dx + dy * dy;
        //if(d < this.segment * this.segment) continue;
        var r = this.segment / Math.sqrt(d);
        p.x = p2.x - r * dx;
        p.y = p2.y - r * dy;
      }
    },

    draw : function(out)
    {
      out.beginPath();
      var p = this.pts[0];
      out.moveTo(p.x, p.y);
      for(var i = 1; i < this.nPts - 1; i++)
      {
        p = this.pts[i];
        var p2 = this.pts[i + 1];
        out.quadraticCurveTo(p.x, p.y, 0.5 * (p.x + p2.x), 0.5 * (p.y + p2.y));
      }
      out.lineWidth = this.width;
      out.strokeStyle = this.color;
      out.stroke();
    }
}

var stage = new tools.Stage(700, 700);
var out = stage.out;

var temp = new tools.Stage(700, 700, false);

stage.autoSize(onResize);
var nCoords = 200;
var step = 2 * Math.PI / nCoords;
out.lineWidth = 2;
var radius = 150;
var coords = [];
var polars = [];

var particlesFriction = 0.99;
var particlesSpeed = 0.05;
var particles = [];
var nParticles = 20;
var radiusBoundaryForce = 0.00002;
var separation = 0.0001;


var hue = Math.random() * 360;
var sat = 10;

var bg = new HSLA(hue, 90, 2);

var border1 = new HSLA(hue, sat, 20, 0.5);
var border2 = new HSLA(hue, sat, 90, 0.5);
var cellBg1 = new HSLA(hue, sat, 0, 1);
var cellBg2 = new HSLA(hue, sat, 25, 1);
var cellBg = temp.out.createRadialGradient(0, 0, 0, 0, 0, 2 * radius);
cellBg.addColorStop(0, cellBg1.toString());
cellBg.addColorStop(1, cellBg2.toString());

var particleBg1 = new HSLA(hue, sat, 20, 0.8);
var particleBg2 = new HSLA(hue, sat, 17);
var particleBg3 = new HSLA(hue, sat, 23);
mutateColor(particleBg1);
mutateColor(particleBg2);
mutateColor(particleBg3);

var microParticlesColor = new HSLA(hue, sat, 35);


var lineColor = new HSLA(hue, sat, 90, 0.2);

for(var i = 0; i < nParticles; i++)
{
    var p = new Particle();
    p.size = 40 * Math.pow(i/nParticles, 4) + 5;
    var a = Math.random() * 2 * Math.PI;
    var r = Math.random() * radius;
    p.x = r * Math.cos(a);
    p.y = r * Math.sin(a);

    particles[i] = p;
}

var nMicroParticles = 300;
var microParticles = [];
for(var i = 0; i < nMicroParticles; i++)
{
    var p = new Particle();
    p.x = (Math.random() * 2 - 1) * radius;
    p.y = (Math.random() * 2 - 1) * radius;
    microParticles[i] = p;
}

var time = 0;

generateCoords();

var lines = [];
var nLines = 20;
for(var i = 0; i < nLines; i++)
{
    var id = 2 * Math.floor(nCoords * Math.random());
    var l = new Line(lineColor.toString(), id, polars);
    lines[i] = l;
}



function update()
{
    var t = Date.now();
    stage.clear();
    temp.clear();
    out.fillStyle = bg.toString();
    out.fillRect(0, 0, stage.width, stage.height);

    generateCoords();

    out.save();
    out.translate(0.5 * stage.width, 0.5 * stage.height);

    drawOutline(out);
    out.fillStyle = cellBg;
    out.fill();
    out.restore();

    temp.out.save();
    temp.out.translate(0.5 * stage.width, 0.5 * stage.height);

    drawOutline(temp.out);
    temp.out.fillStyle = cellBg;
    temp.out.fill();

    updateParticles();
    drawParticles(temp.out);
    out.globalAlpha = 0.4;
    out.drawImage(temp.canvas, 0, 0);
    temp.out.restore();
    out.globalAlpha = 1;

    out.save();
    out.translate(0.5 * stage.width, 0.5 * stage.height);

    drawHair(out);

    out.strokeStyle = border1.toString();
    out.lineWidth = 15;
    drawOutline(out);
    out.strokeStyle = border2.toString();
    out.lineWidth = 12;
    drawOutline(out);
    out.strokeStyle = border1.toString();
    out.lineWidth = 5;
    drawOutline(out);

    updateLines(out);

    out.restore();
    time += 0.5;
}

function drawOutline(out)
{
    out.beginPath();
    out.moveTo(coords[0], coords[1]);
    for(var i = 1; i < nCoords; i++)
      out.lineTo(coords[2 * i], coords[2 * i + 1]);
    out.lineTo(coords[0], coords[1]);
    out.stroke();
}

function drawHair(out)
{
    out.beginPath();
    out.fillStyle = border1.toString();
    c = border2.clone();
    c.a = 0.5;
    out.fillStyle = c.toString();
    for(var i = 0; i < nCoords; i++)
    {
      if(!(i % 5)) continue;

      var curr = 2 * i;
      var posX = coords[curr];
      var posY = coords[curr + 1];
      var prev = 2 * (i ? i - 1 : nCoords - 1);
      var next = 2 * (i == nCoords - 1 ? 0 : i + 1);
      var dx1 = posX - coords[prev];
      var dy1 = posY - coords[prev + 1];
      var d1 = 1 / Math.sqrt(dx1 * dx1 + dy1 * dy1);
      dx1 *= d1;
      dy1 *= d1;

      var dx2 = posX - coords[next];
      var dy2 = posY - coords[next + 1];
      var d2 = 1 / Math.sqrt(dx2 * dx2 + dy2 * dy2);
      dx2 *= d2;
      dy2 *= d2;

      var scale = i % 3 ? 0.5 : 1.2;
      var sign = dx1 * dy2 - dx2 * dy1 > 0 ? -1 : 1;
      var dx = 0.5 * (dx1 + dx2);
      var dy = 0.5 * (dy1 + dy2);
      var length = 7 + 7 * (Math.cos(5 * i * step + 0.01 * Math.cos(time)) + 2);
      var d = scale * sign * length / Math.sqrt(dx * dx + dy * dy);
      dx *= d;
      dy *= d;

      out.moveTo(posX, posY);
      var a = 0.2 * time + 0.3 * i;
      var cpx = posX + 0.5 * dx + 0.5 * dx * (Math.cos(a));
      var cpy = posY + 0.5 * dy + 0.5 * dy * (Math.sin(a));

      out.quadraticCurveTo(cpx, cpy, posX + dx, posY + dy);
      if(!(i % 3))out.fillRect(posX + dx - 1.5, posY + dy - 1.5, 3, 3);
    }
    out.strokeStyle = border2.toString();
    c = border2.clone();
    c.a = 0.5;
    out.strokeStyle = c.toString();
    out.lineWidth = 1;
    out.stroke();
  }

  function updateLines(out)
  {
    for(var i = 0; i < nLines; i++)
    {
      var l = lines[i];
      l.update();
      l.draw(out);
    }
}

function generateCoords()
{
    //x, y
    var s = 0.6;
    for(var i = 0; i < nCoords; i++)
    {
      var ang = i * step;
      ang += 0.1 * Math.cos(0.01 * time + ang);
      ang += 0.25 * Math.cos(0.05 * time + ang);
      var r = radius;
      r += s * 15 * Math.cos(5 * ang + 0.1 * time);
      r -= s * 15 * Math.cos(2 * ang - 0.1 * time);
      r += s * 10 * Math.sin(5 * ang + 0.02 * time);
      r -= s * 15 * Math.sin(2 * ang - 0.01 * time);
      r += s * 10 * Math.cos(2 * ang + 0.01 * time) * Math.sin(5 * ang + 0.1 * time);
      r += s * 10 * Math.sin(5 * ang - 0.1 * time) * Math.sin(ang + 0.1 * time);

      coords[2 * i] = r * Math.cos(ang);
      coords[2 * i + 1] = r * Math.sin(ang);
      polars[2 * i] = r;
      polars[2 * i + 1] = ang;
    }
}

function updateParticles()
{
    for(var i = 0; i < nParticles; i++)
    {
      var p = particles[i];
      p.vx += particlesSpeed * (Math.random() * 2 - 1);
      p.vy += particlesSpeed * (Math.random() * 2 - 1);
      p.vx -= radiusBoundaryForce * p.x;
      p.vy -= radiusBoundaryForce * p.y;

      for(var j = i + 1; j < nParticles; j++)
      {
        var p2 = particles[j];
        var dx = p2.x - p.x;
        var dy = p2.y - p.y;
        var r = p.size + p2.size;
        var d = dx * dx + dy * dy;
        if(d < r * r)
        {
          p.vx -= separation * dx;
          p.vy -= separation * dy;
          p2.vx += separation * dx;
          p2.vy += separation * dy;
        }
      }
      p.vx *= particlesFriction;
      p.vy *= particlesFriction;
      p.x += p.vx;
      p.y += p.vy;
    }

    for(var i = 0; i < nMicroParticles; i++)
    {
      var p = microParticles[i];
      p.vx -= 0.00002 * p.x;
      p.vy -= 0.00002 * p.y;
      p.vx = 0.99 * p.vx + 0.1 * (Math.random() * 2 - 1);
      p.vy = 0.99 * p.vy + 0.1 * (Math.random() * 2 - 1);
      p.x += p.vx;
      p.y += p.vy;
    }
}


function drawParticles(out)
{
    out.save();
    out.globalCompositeOperation = "source-atop";

    out.fillStyle = microParticlesColor.toString();
    for(var i = 0; i < nMicroParticles; i++)
    {
      var p = microParticles[i];
      out.fillRect(p.x, p.y, 2, 2);
    }

    drawParticlesLayer(out, 20, particleBg1);
    drawParticlesLayer(out, 2, particleBg2);
    drawParticlesLayer(out, 0, particleBg3);


    out.restore();
}

function drawParticlesLayer(out, margin, color)
{
    out.beginPath();
    for(var i = 0; i < nParticles; i++)
    {
      var p = particles[i];
      out.moveTo(p.x + p.size + margin, p.y);
      out.arc(p.x, p.y, p.size + margin, 0, 2 * Math.PI);
    }
    out.fillStyle = color.toString();
    out.fill();
}

function onResize()
{
	  temp.resize(stage.width, stage.height);
}

function mutateColor(c)
{
	  c.h += 50 * (Math.random() * 2 - 1);
}
new tools.Loop(update, this);
            
          
!
999px
🕑 One or more of the npm packages you are using needs to be built. You're the first person to ever need it! We're building it right now and your preview will start updating again when it's ready.
Loading ..................

Console