css Audio - Active file-generic CSS - Active Generic - Active HTML - Active JS - Active SVG - Active Text - Active file-generic Video - Active header Love html icon-new-collection icon-person icon-team numbered-list123 pop-out spinner split-screen star tv

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 Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              <!-- Topbar -->
<header class="topbar">
	<ul>
		<li><h1>Low Poly Background</h1></li>
    <li><a href="https://cojdev.github.io/lowpoly" target="_top">Full Version</a></li>
		<li><a class="github-button" href="https://github.com/cojdev/lowpoly" data-icon="octicon-star" data-show-count="true" aria-label="Star cojdev/lowpoly on GitHub">Star</a></li>
	</ul>
</header>
<!-- Canvas Display -->
<section class="display">
	<div class="wrap">
		<div id="loader" class="loader">
			<div class="circle"></div>
			<div class="circle"></div>
			<div class="circle"></div>
			<div class="circle"></div>
		</div>
	<canvas id="canvas" class="canvas1"></canvas>
	</div>
	<canvas id="canvas2" class="canvas2"></canvas>
  <div class="footer">
    Developed by <a href="https://cojdev.github.io" target="_top">Charles Ojukwu</a>
  </div>
</section>
<!-- Controls -->
<section class="controls">

	<h3>Dimensions</h3>
	<div class="fieldgroup">
		<label for="preset-size">Presets</label>
		<select id="preset-size">
			<option value="1280-720">1280x720</option>
			<option value="1366-768">1366x768</option>
			<option value="1920-1080">1920x1080</option>
			<option value="3840-2160">3840x2160 (4K)</option>
			<option value="640-1152">iPhone 5/5s</option>
			<option value="750-1334">iPhone 6/7/8</option>
			<option value="1080-1920">iPhone 6+/7+/8+</option>
		</select>
		<div class="row">
			<div class="_50">
				<label for="width">Width</label>
				<input type="number" id="width">
			</div>
			<div class="_50">
				<label for="height">Height</label>
				<input type="number" id="height">
			</div>
		</div>
		<button id="size-btn">Set</button>
	</div>

	<h3>Geometry</h3>
	<div class="fieldgroup">
		<label for="variance">Variance</label>
		<input type="range" id="variance" value="40">

		<label for="cell-size">Cell Size</label>
		<input type="range" id="cell-size" value="40">

		<label for="oamount">Depth</label>
		<input type="range" id="oamount" value="10">
	</div>
	

	<h3>Colour</h3>
	<div class="fieldgroup">
		<label for="numColours">No. of colours: <span id="num-colours"></span></label>
		<input type="range" id="numColours" value="2" max="4" min="1" step="1"><br>
		<!-- Container for dynamically generated color input elememets -->
		<div id="colour-div"></div>
	</div>
	<div class="section">
		<a id="save" class="button" download="lowpoly.png">Download Image</a>
	</div>
	
</section>
<!-- Loader -->
<svg xmlns="http://www.w3.org/2000/svg" version="1.1">
	<defs>
	<filter id="goo">
		<feGaussianBlur in="SourceGraphic" stdDeviation="5" result="blur" />
		<feColorMatrix in="blur" mode="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 18 -7" result="goo" />
		<feBlend in="SourceGraphic" in2="goo" />
	</filter>
	</defs>
</svg>
            
          
!
            
              @charset "UTF-8";
*, *:before, *:after {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box; }

body {
  padding: 0;
  margin: 0;
font-size: 16px;}

ul, li {
  list-style: none;
  margin: 0;
  padding: 0; }

button {
  outline: none;
  cursor: pointer;
  border: none; }

*, *::before, *::after {
  box-sizing: border-box; }

html,
body {
  margin: 0;
  padding: 0; }

html {
  font-family: 'Barlow', sans-serif;
  color: #bbb;
  background: #ddd;
  font-size: 16px; }

a {
  color: #5ad;
  text-decoration: none; }
  a:hover {
    text-decoration: underline; }

.topbar {
  height: 40px;
  background: #333; }
  .topbar li {
    display: inline; }
  .topbar li:not(:last-child)::after {
    content: " •";
    color: #666;
    margin: 0 .25rem; }
  .topbar h1 {
    display: inline;
    font-size: 1rem;
    font-weight: 400;
    color: #f8f8f8;
    margin: 0;
    line-height: 40px;
    padding-left: 1rem; }

.display {
  width: calc(100% - 200px);
  text-align: center;
  bottom: 0;
  position: fixed;
  left: 0;
  top: 40px;
  bottom: 0; }

.row {
  margin: 0 -0.5rem; }
  .row:before, .row:after {
    content: '';
    display: table; }
  .row:after {
    clear: both; }

._50 {
  float: left;
  padding: 0 0.5rem;
  width: 50%; }

.wrap {
  position: relative;
  display: inline-block;
  height: calc(100vh - 40px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center; }

.canvas1 {
  max-width: 95%;
  max-height: 95%;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1); }

.canvas2 {
  display: none; }

button,
.button {
  display: inline-block;
  text-decoration: none;
  background: linear-gradient(to bottom right, #D84155, #882963);
  padding: 0.6rem;
  color: #fff;
  border-radius: 2px;
  width: 100%; }
  button:hover,
  .button:hover {
    background: linear-gradient(to bottom right, #e16b7b, #af3580); }

.section {
  padding: 1rem; }

input[type=text],
input[type=number],
input[type=range],
select {
  display: block;
  width: 100%; }

input[type=text],
input[type=number],
select {
  height: 2rem;
  line-height: 2rem;
  padding: 0 .5rem;
  background: #fff;
  border: none;
  margin-bottom: .75rem; }

.controls {
  position: fixed;
  top: 40px;
  right: 0;
  bottom: 0;
  width: 200px;
  background: #333;
  padding: 0;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
  overflow-y: auto;
  overflow-x: hidden;
  border-top: 1px solid #444; }
  .controls h3 {
    color: #f8f8f8;
    padding: .5rem 1rem;
    margin: 0;
    font-weight: 600; }

.fieldgroup {
  padding: 1rem;
  background: #222; }

label {
  display: block; }

.footer {
  position: absolute;
  color: #888;
  bottom: 2rem;
  width: 100%;
  font-size: .9em;
  text-align: center;
}

.loader {
  position: absolute;
  top: 50%; }

.loader {
  position: absolute;
  filter: url("#goo");
  top: calc(50% - 15px);
  left: calc(50% - 45px);
  height: 30px;
  width: 90px; }

.circle {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: #fff;
  position: absolute;
  left: 30px; }
  .circle:first-child {
    animation: a1 1200ms ease-out infinite; }
  .circle:last-child {
    animation: a2 1200ms ease-out infinite; }
  .circle:nth-child(2) {
    animation: a3 1200ms ease-out infinite; }
  .circle:nth-child(3) {
    animation: a4 1200ms ease-out infinite; }

@keyframes a1 {
  0% {
    transform: translateX(0); }
  6% {
    transform: translateX(-3.75px) scale(0.75); }
  24%, 30% {
    transform: translateX(-15px) scale(0.65); }
  36% {
    transform: translateX(-15px) scale(0.5); }
  60%, 70% {
    transform: translateX(-15px) scale(0.4); }
  85% {
    transform: translateX(-3.75px) scale(0.9); }
  90% {
    transform: translateX(0); } }

@keyframes a2 {
  0% {
    transform: translateX(0); }
  6% {
    transform: translateX(-3.75px) scale(0.75); }
  24%, 30% {
    transform: translateX(-15px) scale(0.65); }
  36% {
    transform: translateX(-22.5px) scale(0.5); }
  60%, 70% {
    transform: translateX(-45px) scale(0.4); }
  85% {
    transform: translateX(-3.75px) scale(0.9); }
  90% {
    transform: translateX(0); } }

@keyframes a3 {
  0% {
    transform: translateX(0); }
  6% {
    transform: translateX(3.75px) scale(0.75); }
  24%, 30% {
    transform: translateX(15px) scale(0.65); }
  36% {
    transform: translateX(22.5px) scale(0.5); }
  60%, 70% {
    transform: translateX(45px) scale(0.4); }
  85% {
    transform: translateX(3.75px) scale(0.9); }
  90% {
    transform: translateX(0); } }

@keyframes a4 {
  0% {
    transform: translateX(0); }
  6% {
    transform: translateX(3.75px) scale(0.75); }
  24%, 30% {
    transform: translateX(15px) scale(0.65); }
  36% {
    transform: translateX(15px) scale(0.5); }
  60%, 70% {
    transform: translateX(15px) scale(0.4); }
  85% {
    transform: translateX(3.75px) scale(0.9); }
  90% {
    transform: translateX(0); } }
            
          
!
            
              /**
 * Author: Charles Ojukwu
 */
(function () {

'use strict';

var cvs,//canvas
	ctx,//canvas context
	gridWidth,//draw width (2 cells wider than the actual canvas)
	gridHeight,//draw height (2 cells taller than the actual canvas)
	vRange,
	cRange,
	maxCols,
	maxRows,
	oAmount,
	imgd,imge,
	base_image,
	saveBtn,
	cvs2,
	ctx2,
	loader,
	numColours,
	preset;
var points = [];
var cellSize = 50;//size of a single grid square
var variance = 0.2;
var ovA = 0.5;
var colours = ["#22bbee","#8855cc","#ee2266","#ee7722"];

function init () {
	//Add on load scripts
	cvs = document.getElementById("canvas");
	cRange = document.getElementById("cell-size");
	vRange = document.getElementById("variance");
	oAmount = document.getElementById("oamount");
	saveBtn = document.getElementById('save');
	ctx = cvs.getContext("2d");
	cvs2 = document.getElementById("canvas2");
	ctx2 = cvs2.getContext("2d");
	numColours = document.getElementById("numColours");

	preset = document.getElementById("preset-size");

	preset.addEventListener("change",function () {
		var temp5 = preset.value.split("-");
		console.log(temp5);

		document.getElementById('width').value = parseInt(temp5[0]);
		document.getElementById('height').value = parseInt(temp5[1]);
	},false);


	var setSize = function(w,h) {
		cvs.width = w;
		cvs.height = h;

		gridWidth = cvs.width+cellSize*2;
		gridHeight = cvs.height+cellSize*2;

		cvs2.width = cvs.width;
		cvs2.height = cvs.height;
		//Repopulate inputs
		document.getElementById('width').value = w;
		document.getElementById('height').value = h;
	}

	var setCols = function() {
		for (var i = 0; i < numColours.value; i++) {
			var temp = document.createElement("input");
			temp.type = "color";
			temp.id = "colour" +(i+1);

			document.getElementById("colour-div").appendChild(temp);
			document.getElementById("num-colours").innerHTML = numColours.value;
			temp.value = colours[i];
			temp.addEventListener("change",function () {
				//document.getElementById("colour-div").innerHTML = "";
				//setCols();
				drawBG(ctx2,cvs2);
				loader.style.display = "";
				var blob = window.setTimeout(function () {
					pointFun();
				},2);
			},false);
		}
	}

	setCols();

	setSize(1280,720);
	//base_image = new Image();
	//base_image.crossOrigin = "Anonymous";
	//base_image.src = 'download.png';
	//base_image.onload = function () {
		drawBG(ctx2,cvs2);
		loader = document.getElementById("loader");
		pointFun();
	//}
	var tout = 0;
	numColours.addEventListener("change",function () {
		document.getElementById("colour-div").innerHTML = "";
		setCols();
		drawBG(ctx2,cvs2);
		loader.style.display = "";
		var blob = window.setTimeout(function () {
			pointFun();
		},tout);
	},false);
	cRange.addEventListener("change",function () {
		loader.style.display = "";
		var blob = window.setTimeout(function () {
			pointFun();
		},tout);
	},false);
	vRange.addEventListener("change",function () {
		loader.style.display = "";
		var blob = window.setTimeout(function () {
			pointFun();
		},tout);
	},false);
	oAmount.addEventListener("change",function () {
		loader.style.display = "";
		var blob = window.setTimeout(function () {
			pointFun(true);
		},tout);
	},false);

	var sizeBtn = document.getElementById('size-btn');
	sizeBtn.addEventListener("click",function () {
		var tempw = document.getElementById('width').value;
		var temph = document.getElementById('height').value;
		setSize(tempw,temph);
		drawBG(ctx2,cvs2);
		console.log(tempw +" : "+ temph)
		pointFun();
	})

	//saveBtn.addEventListener("click",saveImage,false);
}
//Particle constructor
function point () {
	/*this.x = Math.random()*cvs.width;;
	this.y = Math.random()*cvs.height;
	this.vx = (Math.random()*2)-1;
	this.vy = (Math.random()*2)-1;*/
	//points.push(this);
}

function drawBG(context,canvas) {
	context.clearRect(0, 0, cvs.width, cvs.height);
	context.globalCompositeOperation = "multiply";
	var bg = context.createLinearGradient(0,0,canvas.width,0);

	//Duskish gradient
	/*bg.addColorStop(0,"#0e1b32");
	bg.addColorStop(0.8,"#c28993");
	bg.addColorStop(1,"#ffc7af");*/

	//Pink/Purple Gradient
	/*bg.addColorStop(0,"#85c");
	bg.addColorStop(1,"#d14");*/

	//Whitish
	/*bg.addColorStop(0,"#f8f8f8");
	bg.addColorStop(1,"#ddd");*/
	var inputs = document.getElementById("colour-div").getElementsByTagName('input');
	//console.log(inputs.length);
	for (var i = 0; i < inputs.length; i++) {
		if (inputs.length > 1) {
			bg.addColorStop(i/(inputs.length-1),inputs[i].value);
			console.log(inputs[i].value);
		}else{
			bg = inputs[i].value;
		}
		colours[i] = inputs[i].value;
	}

	context.fillStyle = bg;
	context.beginPath();
	context.fillRect(0,0,canvas.width,canvas.height);
	context.closePath();
	context.fill();

	context.beginPath();
	var bg2 = context.createLinearGradient(0,0,0,cvs.height);
	bg2.addColorStop(0,"#fff");
	bg2.addColorStop(1,"#ccc");
	context.fillStyle = bg2;
	context.fillRect(0,0,cvs.width,cvs.height);
	context.closePath();
	context.fill();
	context.globalCompositeOperation = "source-over";
	//ctx.drawImage(base_image, 0, 0);
	if (context == ctx2) {imgd = context;}
	else if (imgd.getImageData(0, 0, 1, 1).data[3] < 255 || imgd.getImageData(canvas.width-1, canvas.height-1, 1, 1).data[3] < 255) {
		context.clearRect(0,0,canvas.width,canvas.height);
	}
	

}

function saveImage() {
	// body...
	var dataURL = canvas.toDataURL();
	saveBtn.href = dataURL;
}

function draw (obj,rand) {

	var red,blue,green,alpha;

	var setColour = function (xpos,ypos) {
		if (xpos < 0) {
			xpos = 0;
		}
		if (xpos > cvs.width-1) {
			xpos = cvs.width-1;
		}
		if (ypos < 0) {
			ypos = 0;
		}
		if (ypos > cvs.height-1) {
			ypos = cvs.height-1;
		}
		red = imgd.getImageData(xpos, ypos, 1, 1).data[0];
		green = imgd.getImageData(xpos, ypos, 1, 1).data[1];
		blue = imgd.getImageData(xpos, ypos, 1, 1).data[2];
		alpha = imgd.getImageData(xpos, ypos, 1, 1).data[3];
		
	}

	var filler = function () {
		if(rand){
			var temp = (Math.random()*2*ovA)-ovA;
			ctx.fillStyle = "rgba("+Math.round(red-red*temp)+", "+Math.round(green-green*temp)+", "+Math.round(blue-blue*temp)+", "+alpha/255+")";
		} else {
			ctx.fillStyle = "rgba("+red+", "+green+", "+blue+", "+alpha/255+")";
		}
	}
	
	for (var i = 0; i < points.length; i++) {
		if (obj == points[i] && obj.r % 2 == 0 && points[i+maxCols+1] && obj.c < maxCols-1) {
			//setColour(obj.x,obj.y+2*cellSize/3);
			setColour(Math.round(obj.c/maxCols*gridWidth),Math.round(obj.r/maxRows*gridHeight+2*cellSize/3));
			filler();
			//console.log(obj.c);
			ctx.beginPath();
			ctx.moveTo(obj.x,obj.y);
			ctx.lineTo(points[i+maxCols].x,points[i+maxCols].y);
			ctx.lineTo(points[i+maxCols+1].x,points[i+maxCols+1].y);
			ctx.closePath();
			ctx.fill();
			//ctx.stroke();

			//setColour(obj.x+cellSize/2,obj.y+cellSize/3);
			setColour(Math.round(obj.c/maxCols*gridWidth+cellSize/2),Math.round(obj.r/maxRows*gridHeight+cellSize/3));
			filler();
			//ctx.fillStyle = "green";
			ctx.beginPath();
			ctx.moveTo(obj.x,obj.y);
			ctx.lineTo(points[i+1].x,points[i+1].y);
			ctx.lineTo(points[i+maxCols+1].x,points[i+maxCols+1].y);
			ctx.closePath();
			ctx.fill();
			//console.log("YES");
		}
		if (obj == points[i] && obj.r % 2 != 0 && points[i+maxCols+1] && obj.c > 0) {

			//setColour(obj.x-cellSize/2,obj.y+cellSize/3);
			setColour(Math.round((obj.c-1)/maxCols*gridWidth),Math.round(obj.r/maxRows*gridHeight+cellSize/3));
			//if (!setColour(Math.round((obj.c-1)/maxCols*gridWidth),200)) {console.log(obj)}
			filler();
			ctx.beginPath();
			ctx.moveTo(obj.x,obj.y);
			ctx.lineTo(points[i-1].x,points[i-1].y);
			ctx.lineTo(points[i+maxCols-1].x,points[i+maxCols-1].y);
			ctx.closePath();
			ctx.fill();
			//ctx.stroke();

			//setColour(obj.x,obj.y+2*cellSize/3);
			setColour(Math.round((obj.c-1)/maxCols*gridWidth+cellSize/2),Math.round(obj.r/maxRows*gridHeight+2*cellSize/3));
			filler();
			//ctx.fillStyle = "green";
			ctx.beginPath();
			ctx.moveTo(obj.x,obj.y);
			ctx.lineTo(points[i+maxCols-1].x,points[i+maxCols-1].y);
			ctx.lineTo(points[i+maxCols].x,points[i+maxCols].y);
			ctx.closePath();
			ctx.fill();
			//console.log("NO");
		}
	}
}
//Point generator
function generatePoints (amount) {
	points = [];
	var temp;
	var row = 0;
	var col = 0;
	for (var i = 0; i < amount; i++) {
		temp = new point();
		if (row % 2 == 0) {
			temp.x = (col*cellSize)-cellSize;
			temp.x = temp.x + (Math.random()-.5)*variance*cellSize*2;
		} else {
			temp.x = (col*cellSize)-cellSize-cellSize/2;
			temp.x = temp.x + (Math.random()-.5)*variance*cellSize*2;
		}
		temp.y = (row*cellSize*0.866)-cellSize;
		temp.y = temp.y + (Math.random()-.5)*variance*cellSize*2;
		temp.r = row;
		temp.c = col;
		points.push(temp);
		col = col + 1;
		if ((i+1) % maxCols == 0) {
			row = row + 1;
			col = 0;
		}
	}
	//console.log(points);
}

function addRand (a,b) {
	return (Math.random()*b*a-(b/2))
}

function pointFun (drawOnly) {
	if(drawOnly === true){
		//do nothing
	}else{
		cellSize = (cRange.value*3)+30;
		variance = vRange.value/100;
		gridWidth = cvs.width+cellSize*2;
		gridHeight = cvs.height+cellSize*2;
		maxCols = Math.ceil(gridWidth / cellSize)+2;
		maxRows = Math.ceil(gridHeight / (cellSize*0.865))
		//console.log(maxCols);
		var x = maxCols;
		var y = maxRows;
		generatePoints(x*y);
	}
	ovA = oAmount.value/100;
	ctx.clearRect(0, 0, cvs.width, cvs.height);
	drawBG(ctx,cvs);
	for (var i = 0; i < points.length; i++) {
		draw(points[i],true);
	};
	saveImage();
	loader.style.display = "none";
}

//Execute when DOM has loaded
document.addEventListener('DOMContentLoaded',init,false);

})();
            
          
!
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