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Adding Classes

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. So you don't have access to higher-up elements like the <html> tag. If you want to add classes there that can affect the whole document, this is the place to do it.

About the <head>

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. If you need things in the <head> of the document, put that code here.

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Insecure Resource

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About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

     

Vendor Prefixing

About Vendor Prefixing

To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

We offer two popular choices: Autoprefixer (which processes your CSS server-side) and -prefix-free (which applies prefixes via a script, client-side).

     

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You can apply CSS to your Pen from any stylesheet on the web. Just put a URL to it here and we'll apply it, in the order you have them, before the CSS in the Pen itself.

If the stylesheet you link to has the file extension of a preprocessor, we'll attempt to process it before applying.

You can also link to another Pen here, and we'll pull the CSS from that Pen and include it. If it's using a matching preprocessor, we'll combine the code before preprocessing, so you can use the linked Pen as a true dependency.

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About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient. For instance, CoffeeScript can help prevent easy-to-make mistakes and offer a cleaner syntax and Babel can bring ECMAScript 6 features to browsers that only support ECMAScript 5.

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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.

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About External Resources

You can apply a script from anywhere on the web to your Pen. Just put a URL to it here and we'll add it, in the order you have them, before the JavaScript in the Pen itself.

If the script you link to has the file extension of a preprocessor, we'll attempt to process it before applying.

You can also link to another Pen here, and we'll pull the JavaScript from that Pen and include it. If it's using a matching preprocessor, we'll combine the code before preprocessing, so you can use the linked Pen as a true dependency.

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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.

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HTML

            
              <div id="container" class="borderimg"></div>

<div id="menu">
  <a id="btSaveSVG" class="bt">Save SVG</a>
</div>
!

CSS

            
              html, body, div {
  margin: 0;
  padding: 0;
  border: 0;
}
body {
  overflow: hidden;
  background-image: url("http://www.nkunited.de/ExternalImages/jsfiddle/wallPattern.png");
  background-repeat: repeat;
}
.borderimg {
  border: 106px solid transparent;
  padding: 0px;
  -webkit-border-image: url(http://www.nkunited.de/ExternalImages/jsfiddle/ImageFrame.png) 37 round; /* Safari 3.1-5 */
  -o-border-image: url(http://www.nkunited.de/ExternalImages/jsfiddle/ImageFrame.png) 37 round; /* Opera 11-12.1 */
  border-image: url(http://www.nkunited.de/ExternalImages/jsfiddle/ImageFrame.png) 37 round;
}

#container {
	width: 500px;
  height: 500px;
	background-color: #fff;
	position: absolute;
  left:0; right:0;
  top:0; bottom:0;
	margin:auto;
  text-align: center;
}

.bt {
	-moz-box-shadow:inset 0px 1px 0px 0px #2c302e;
	-webkit-box-shadow:inset 0px 1px 0px 0px #2c302e;
	box-shadow:inset 0px 1px 0px 0px #2c302e;
	background:-webkit-gradient(linear, left top, left bottom, color-stop(0.05, #909590), color-stop(1, #474a48));
	background:-moz-linear-gradient(top, #909590 5%, #474a48 100%);
	background:-webkit-linear-gradient(top, #909590 5%, #474a48 100%);
	background:-o-linear-gradient(top, #909590 5%, #474a48 100%);
	background:-ms-linear-gradient(top, #909590 5%, #474a48 100%);
	background:linear-gradient(to bottom, #909590 5%, #474a48 100%);
	background-color:#909590;
	-moz-border-radius:3px;
	-webkit-border-radius:3px;
	border-radius:3px;
	border:1px solid #2c302e;
	display:inline-block;
	cursor:pointer;
	color:#ffffff;
	font-family:Arial;
	font-size:12px;
	padding:4px 12px;
	text-decoration:none;
	text-shadow:0px 1px 0px #2c302e;
}
.bt:hover {
	background:-webkit-gradient(linear, left top, left bottom, color-stop(0.05, #474a48), color-stop(1, #909590));
	background:-moz-linear-gradient(top, #474a48 5%, #909590 100%);
	background:-webkit-linear-gradient(top, #474a48 5%, #909590 100%);
	background:-o-linear-gradient(top, #474a48 5%, #909590 100%);
	background:-ms-linear-gradient(top, #474a48 5%, #909590 100%);
	background:linear-gradient(to bottom, #474a48 5%, #909590 100%);
	background-color:#474a48;
}
.bt:active {
	position:relative;
	top:1px;
}

#menu {
  position: absolute;
  top: 10px;
  left: 10px;
}
!

JS

            
              var SPEED = 1;

var LINE_WIDTH = 2;
var LINE_DISTANCE = 2;
var LINE_COLOR = 'rgb(0,0,0)';
var LINE_CAP = 'square';//square, butt or round

var w = 500;
var h = 500;

//---

var canvas;

var lineHolder = [];
var lineHolderWidth = 0;
var lineHolderHeight = 0;

var path;
var pathCoordinates = '';

var posHolder;

var counter;
var halftime;

var interval;

var btSaveSVG;

//---

var patternLineTop = {};
		patternLineTop.coords = [ { x:0, y:-1 } ];
    patternLineTop.maxLength = Math.floor( w / ( LINE_WIDTH + LINE_DISTANCE ) ) / 2;
    patternLineTop.currentLength = 0;
    patternLineTop.allowLimit = true;
    patternLineTop.index = 0;
    patternLineTop.indexAscending = false;

var patternLineDown = {};
		patternLineDown.coords = [ { x:0, y:1 } ];
    patternLineDown.maxLength = Math.floor( w / ( LINE_WIDTH + LINE_DISTANCE ) ) / 2;
    patternLineDown.currentLength = 0;
    patternLineDown.allowLimit = true;
    patternLineDown.index = 0;
    patternLineDown.indexAscending = false;
    
var patternLineLeft = {};
    patternLineLeft.coords = [ { x:-1, y:0 } ];
    patternLineLeft.maxLength = Math.floor( w / ( LINE_WIDTH + LINE_DISTANCE ) ) / 2;
    patternLineLeft.currentLength = 0;
    patternLineLeft.allowLimit = true;
    patternLineLeft.index = 0;
    patternLineLeft.indexAscending = false;

var patternLineRight = {};
    patternLineRight.coords = [ { x:1, y:0 } ];
    patternLineRight.maxLength = Math.floor( w / ( LINE_WIDTH + LINE_DISTANCE ) ) / 2;
    patternLineRight.currentLength = 0;
    patternLineRight.allowLimit = true;
    patternLineRight.index = 0;
    patternLineRight.indexAscending = false;
    
var patternRandom = {};
    patternRandom.coords = [ { x:0, y:0 } ];
    patternRandom.maxLength = Math.floor( w / ( LINE_WIDTH + LINE_DISTANCE ) );//15;//Math.floor( w / ( LINE_WIDTH + LINE_DISTANCE ) ) * Math.floor( h / ( LINE_WIDTH + LINE_DISTANCE ) );
    patternRandom.currentLength = 0;
    patternRandom.allowLimit = true;
    patternRandom.index = 0;
    patternRandom.indexAscending = false;
    
var patternSpiralLeft = {};
		patternSpiralLeft.coords = [ { x:0, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 } ];
    patternSpiralLeft.maxLength = patternSpiralLeft.coords.length;
    patternSpiralLeft.currentLength = 0;
    patternSpiralLeft.allowLimit = false;
    patternSpiralLeft.index = 0;
    patternSpiralLeft.indexAscending = true;
    
var patternSpiralRight = {};
		patternSpiralRight.coords = [ { x:0, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 } ];
    patternSpiralRight.maxLength = patternSpiralRight.coords.length;
    patternSpiralRight.currentLength = 0;
    patternSpiralRight.allowLimit = false;
    patternSpiralRight.index = 0;
    patternSpiralRight.indexAscending = true;
    
var patternSquare3x3 = {};
    patternSquare3x3.coords = [ { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 } ];
    patternSquare3x3.maxLength = patternSquare3x3.coords.length;
    patternSquare3x3.currentLength = 0;
    patternSquare3x3.allowLimit = true;
    patternSquare3x3.index = 0;
    patternSquare3x3.indexAscending = true;

var patternCross1x1 = {};
    patternCross1x1.coords = [ { x:0, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 } ];
    patternCross1x1.maxLength = patternCross1x1.coords.length;
    patternCross1x1.currentLength = 0;
    patternCross1x1.allowLimit = false;
    patternCross1x1.index = 0;
    patternCross1x1.indexAscending = true;
    
var patternCross2x2 = {};
    patternCross2x2.coords = [ { x:0, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 } ];
    patternCross2x2.maxLength = patternCross2x2.coords.length;
    patternCross2x2.currentLength = 0;
    patternCross2x2.allowLimit = false;
    patternCross2x2.index = 0;
    patternCross2x2.indexAscending = true;
    
var patternCross3x3 = {};
    patternCross3x3.coords = [ { x:0, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 } ];
    patternCross3x3.maxLength = patternCross3x3.coords.length;
    patternCross3x3.currentLength = 0;
    patternCross3x3.allowLimit = false;
    patternCross3x3.index = 0;
    patternCross3x3.indexAscending = true;
    
var patternCross4x4 = {};
    patternCross4x4.coords = [ { x:0, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 } ];
    patternCross4x4.maxLength = patternCross4x4.coords.length;
    patternCross4x4.currentLength = 0;
    patternCross4x4.allowLimit = false;
    patternCross4x4.index = 0;
    patternCross4x4.indexAscending = true;
    
var patternHorseshoeUp1x1 = {};
    patternHorseshoeUp1x1.coords = [ { x:0, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:-1 } ];
    patternHorseshoeUp1x1.maxLength = patternHorseshoeUp1x1.coords.length;
    patternHorseshoeUp1x1.currentLength = 0;
    patternHorseshoeUp1x1.allowLimit = false;
    patternHorseshoeUp1x1.index = 0;
    patternHorseshoeUp1x1.indexAscending = true;
    
var patternHorseshoeDown1x1 = {};
    patternHorseshoeDown1x1.coords = [ { x:0, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:1 } ];
    patternHorseshoeDown1x1.maxLength = patternHorseshoeDown1x1.coords.length;
    patternHorseshoeDown1x1.currentLength = 0;
    patternHorseshoeDown1x1.allowLimit = false;
    patternHorseshoeDown1x1.index = 0;
    patternHorseshoeDown1x1.indexAscending = true;
    
var patternHorseshoeLeft1x1 = {};
    patternHorseshoeLeft1x1.coords = [ { x:0, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:-1, y:0 } ];
    patternHorseshoeLeft1x1.maxLength = patternHorseshoeLeft1x1.coords.length;
    patternHorseshoeLeft1x1.currentLength = 0;
    patternHorseshoeLeft1x1.allowLimit = false;
    patternHorseshoeLeft1x1.index = 0;
    patternHorseshoeLeft1x1.indexAscending = true;
    
var patternHorseshoeRight1x1 = {};
    patternHorseshoeRight1x1.coords = [ { x:0, y:0 }, { x:-1, y:0 }, { x:0, y:1 }, { x:1, y:0 } ];
    patternHorseshoeRight1x1.maxLength = patternHorseshoeRight1x1.coords.length;
    patternHorseshoeRight1x1.currentLength = 0;
    patternHorseshoeRight1x1.allowLimit = false;
    patternHorseshoeRight1x1.index = 0;
    patternHorseshoeRight1x1.indexAscending = true;
    
var patternHorseshoeUp2x2 = {};
    patternHorseshoeUp2x2.coords = [ { x:0, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 } ];
    patternHorseshoeUp2x2.maxLength = patternHorseshoeUp2x2.coords.length;
    patternHorseshoeUp2x2.currentLength = 0;
    patternHorseshoeUp2x2.allowLimit = true;
    patternHorseshoeUp2x2.index = 0;
    patternHorseshoeUp2x2.indexAscending = true;
    
var patternHorseshoeDown2x2 = {};
    patternHorseshoeDown2x2.coords = [ { x:0, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 } ];
    patternHorseshoeDown2x2.maxLength = patternHorseshoeDown2x2.coords.length;
    patternHorseshoeDown2x2.currentLength = 0;
    patternHorseshoeDown2x2.allowLimit = true;
    patternHorseshoeDown2x2.index = 0;
    patternHorseshoeDown2x2.indexAscending = true;
    
var patternHorseshoeLeft2x2 = {};
    patternHorseshoeLeft2x2.coords = [ { x:0, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:-1, y:0 }, { x:-1, y:0 } ];
    patternHorseshoeLeft2x2.maxLength = patternHorseshoeLeft2x2.coords.length;
    patternHorseshoeLeft2x2.currentLength = 0;
    patternHorseshoeLeft2x2.allowLimit = true;
    patternHorseshoeLeft2x2.index = 0;
    patternHorseshoeLeft2x2.indexAscending = true;
    
var patternHorseshoeRight2x2 = {};
    patternHorseshoeRight2x2.coords = [ { x:0, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:1, y:0 }, { x:1, y:0 } ];
    patternHorseshoeRight2x2.maxLength = patternHorseshoeRight2x2.coords.length;
    patternHorseshoeRight2x2.currentLength = 0;
    patternHorseshoeRight2x2.allowLimit = true;
    patternHorseshoeRight2x2.index = 0;
    patternHorseshoeRight2x2.indexAscending = true;
    
var patternHorseshoeUp3x3 = {};
    patternHorseshoeUp3x3.coords = [ { x:0, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 } ];
    patternHorseshoeUp3x3.maxLength = patternHorseshoeUp3x3.coords.length;
    patternHorseshoeUp3x3.currentLength = 0;
    patternHorseshoeUp3x3.allowLimit = true;
    patternHorseshoeUp3x3.index = 0;
    patternHorseshoeUp3x3.indexAscending = true;
    
var patternHorseshoeDown3x3 = {};
    patternHorseshoeDown3x3.coords = [ { x:0, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 } ];
    patternHorseshoeDown3x3.maxLength = patternHorseshoeDown3x3.coords.length;
    patternHorseshoeDown3x3.currentLength = 0;
    patternHorseshoeDown3x3.allowLimit = true;
    patternHorseshoeDown3x3.index = 0;
    patternHorseshoeDown3x3.indexAscending = true;
    
var patternHorseshoeLeft3x3 = {};
    patternHorseshoeLeft3x3.coords = [ { x:0, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 } ];
    patternHorseshoeLeft3x3.maxLength = patternHorseshoeLeft3x3.coords.length;
    patternHorseshoeLeft3x3.currentLength = 0;
    patternHorseshoeLeft3x3.allowLimit = true;
    patternHorseshoeLeft3x3.index = 0;
    patternHorseshoeLeft3x3.indexAscending = true;
    
var patternHorseshoeRight3x3 = {};
    patternHorseshoeRight3x3.coords = [ { x:0, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 } ];
    patternHorseshoeRight3x3.maxLength = patternHorseshoeRight3x3.coords.length;
    patternHorseshoeRight3x3.currentLength = 0;
    patternHorseshoeRight3x3.allowLimit = true;
    patternHorseshoeRight3x3.index = 0;
    patternHorseshoeRight3x3.indexAscending = true;
    
var patternZigZagTop1x1 = {};
    patternZigZagTop1x1.coords = [ { x:0, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:-1 } ];
    patternZigZagTop1x1.maxLength = patternZigZagTop1x1.coords.length;
    patternZigZagTop1x1.currentLength = 0;
    patternZigZagTop1x1.allowLimit = true;
    patternZigZagTop1x1.index = 0;
    patternZigZagTop1x1.indexAscending = true;
    
var patternZigZagDown1x1 = {};
    patternZigZagDown1x1.coords = [ { x:0, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }  ];
    patternZigZagDown1x1.maxLength = patternZigZagDown1x1.coords.length;
    patternZigZagDown1x1.currentLength = 0;
    patternZigZagDown1x1.allowLimit = true;
    patternZigZagDown1x1.index = 0;
    patternZigZagDown1x1.indexAscending = true;
    
var patternZigZagLeft1x1 = {};
    patternZigZagLeft1x1.coords = [ { x:0, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 } ];
    patternZigZagLeft1x1.maxLength = patternZigZagLeft1x1.coords.length;
    patternZigZagLeft1x1.currentLength = 0;
    patternZigZagLeft1x1.allowLimit = true;
    patternZigZagLeft1x1.index = 0;
    patternZigZagLeft1x1.indexAscending = true;
    
var patternZigZagRightt1x1 = {};
    patternZigZagRightt1x1.coords = [ { x:0, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 } ];
    patternZigZagRightt1x1.maxLength = patternZigZagRightt1x1.coords.length;
    patternZigZagRightt1x1.currentLength = 0;
    patternZigZagRightt1x1.allowLimit = true;
    patternZigZagRightt1x1.index = 0;
    patternZigZagRightt1x1.indexAscending = true;

var patternSpiralLeftXXL = {};
		patternSpiralLeftXXL.coords = [ { x:0, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }  ];
    patternSpiralLeftXXL.maxLength = patternSpiralLeftXXL.coords.length;
    patternSpiralLeftXXL.currentLength = 0;
    patternSpiralLeftXXL.allowLimit = false;
    patternSpiralLeftXXL.index = 0;
    patternSpiralLeftXXL.indexAscending = true;
    
var patternSpiralRightXL = {};
		patternSpiralRightXL.coords = [ { x:0, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:-1, y:0 } ];
    patternSpiralRightXL.maxLength = patternSpiralRightXL.coords.length;
    patternSpiralRightXL.currentLength = 0;
    patternSpiralRightXL.allowLimit = false;
    patternSpiralRightXL.index = 0;
    patternSpiralRightXL.indexAscending = true;
    
var patternEagle = {};
		patternEagle.coords = [ { x:0, y:0 }, { x:-1, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:0, y:1 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:-1, y:0 } ];
    patternEagle.maxLength = patternEagle.coords.length;
    patternEagle.currentLength = 0;
    patternEagle.allowLimit = false;
    patternEagle.index = 0;
    patternEagle.indexAscending = true;
    
var patternDiagonalTopLeft = {};
		patternDiagonalTopLeft.coords = [ { x:0, y:0 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }, { x:-1, y:0 }, { x:0, y:-1 }  ];
    patternDiagonalTopLeft.maxLength = patternDiagonalTopLeft.coords.length;
    patternDiagonalTopLeft.currentLength = 0;
    patternDiagonalTopLeft.allowLimit = true;
    patternDiagonalTopLeft.index = 0;
    patternDiagonalTopLeft.indexAscending = true;
    
var patternDiagonalTopRight = {};
		patternDiagonalTopRight.coords = [ { x:0, y:0 }, { x:1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:-1 }, { x:1, y:0 }, { x:0, y:-1 } , { x:1, y:0 }, { x:0, y:-1 } , { x:1, y:0 }, { x:0, y:-1 } , { x:1, y:0 }, { x:0, y:-1 } , { x:1, y:0 }, { x:0, y:-1 } , { x:1, y:0 }, { x:0, y:-1 } , { x:1, y:0 }, { x:0, y:-1 } , { x:1, y:0 }, { x:0, y:-1 } , { x:1, y:0 }, { x:0, y:-1 } , { x:1, y:0 }, { x:0, y:-1 }   ];
    patternDiagonalTopRight.maxLength = patternDiagonalTopRight.coords.length;
    patternDiagonalTopRight.currentLength = 0;
    patternDiagonalTopRight.allowLimit = true;
    patternDiagonalTopRight.index = 0;
    patternDiagonalTopRight.indexAscending = true;
    
var patternDiagonalBottomLeft = {};
		patternDiagonalBottomLeft.coords = [ { x:0, y:0 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }, { x:-1, y:0 }, { x:0, y:1 }  ];
    patternDiagonalBottomLeft.maxLength = patternDiagonalBottomLeft.coords.length;
    patternDiagonalBottomLeft.currentLength = 0;
    patternDiagonalBottomLeft.allowLimit = true;
    patternDiagonalBottomLeft.index = 0;
    patternDiagonalBottomLeft.indexAscending = true;
    
var patternDiagonalBottomRight = {};
		patternDiagonalBottomRight.coords = [ { x:0, y:0 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }, { x:1, y:0 }, { x:0, y:1 }  ];
    patternDiagonalBottomRight.maxLength = patternDiagonalBottomRight.coords.length;
    patternDiagonalBottomRight.currentLength = 0;
    patternDiagonalBottomRight.allowLimit = true;
    patternDiagonalBottomRight.index = 0;
    patternDiagonalBottomRight.indexAscending = true;
    
var patterns = [
	
	patternLineTop,
  patternLineDown,
  patternLineLeft,
  patternLineRight,
  patternRandom,
  patternSpiralLeft,
  patternSpiralRight,
  patternSquare3x3,
  patternCross1x1,
  patternCross2x2,
  patternCross3x3,
  patternCross4x4,
  patternHorseshoeUp1x1,
  patternHorseshoeDown1x1,
  patternHorseshoeLeft1x1,
  patternHorseshoeRight1x1,
  patternHorseshoeUp2x2,
  patternHorseshoeDown2x2,
  patternHorseshoeLeft2x2,
  patternHorseshoeRight2x2,
  patternHorseshoeUp3x3,
  patternHorseshoeDown3x3,
  patternHorseshoeLeft3x3,
  patternHorseshoeRight3x3,
  patternZigZagTop1x1,
  patternZigZagDown1x1,
  patternZigZagLeft1x1,
  patternZigZagRightt1x1,
  patternSpiralRightXL,
  patternSpiralLeftXXL,
  patternEagle,
  patternDiagonalTopLeft,
  patternDiagonalTopRight,
  patternDiagonalBottomLeft,
  patternDiagonalBottomRight
  
];

var patternCurrent;

//---

function init() {

	canvas = createCanvas( w , h , 'container' );
  
  path = createPath( LINE_COLOR, LINE_WIDTH, LINE_CAP);
  
  canvas.appendChild( path );

	counter = 0;
  halftime = false;

	lineHolderWidth = Math.floor( w / ( LINE_WIDTH + LINE_DISTANCE ) );
  lineHolderHeight = Math.floor( h / ( LINE_WIDTH + LINE_DISTANCE ) );

	for ( var x = 0; x < lineHolderWidth; x++ ) {
  
  	lineHolder[ x ] = [];
    
    for ( var y = 0; y < lineHolderHeight; y++ ) {
    
      lineHolder[ x ][ y ] = 0;
    
    }
  
  }
  
  var newArrayPositionObject = getRandomDir( getRandomStartPos() );

  drawLine( 'M', newArrayPositionObject.position );
  
  interval = setInterval( function() { 
  
  	drawLine( 'L', posHolder );
    
    counter++;
    
    if ( counter > ( lineHolder.length * lineHolder[ 0 ].length ) / 2 ) {
    //if ( counter > ( lineHolder.length * lineHolder[ 0 ].length ) - ( ( lineHolder.length * lineHolder[ 0 ].length ) / 4 ) ) {
    
  		halftime = true;
      
    }
    
    if ( counter >= lineHolder.length * lineHolder[ 0 ].length - 2 ) {//-2 because of the line at the beginning
    
    	console.log( 'checkEnd: ', checkEnd(), ' - ', counter, ' - ', lineHolder.length * lineHolder[ 0 ].length );
    
    	if ( checkEnd() ) {
      
      	clearInterval( interval );
        closePath();
      
      }
    
    }
    
  }, SPEED );
  
  //---
  
  btSaveSVG = document.getElementById( 'btSaveSVG' );
  btSaveSVG.addEventListener( 'mousedown', btSaveSVGHandler, false );

};

//---

function btSaveSVGHandler( e ) {

	saveSvg( canvas, 'Doodle.svg' );

};

function saveSvg( svgEl, name ) {

    svgEl.setAttribute( 'xmlns', 'http://www.w3.org/2000/svg' );
    
    var svgData = svgEl.outerHTML;
    var preface = '<?xml version="1.0" standalone="no"?>\r\n';
    var svgBlob = new Blob( [ preface, svgData ], { type:'image/svg+xml;charset=utf-8'} );
    var svgUrl = URL.createObjectURL( svgBlob );
    var downloadLink = document.createElement( 'a' );
    
    downloadLink.href = svgUrl;
    downloadLink.download = name;
    
    document.body.appendChild(downloadLink);
    downloadLink.click();
    document.body.removeChild(downloadLink);
    
}

//---

function checkEnd() {

	for ( var x = 0; x < lineHolderWidth; x++ ) {

    for ( var y = 0; y < lineHolderHeight; y++ ) {

      if ( lineHolder[ x ][ y ] === 0 ) {
      
      	return false;
      
      }
    
    }
  
  }
  
  return true;

};

//---

function drawLine( command, position ) {

	var oldArrayPosition = position;
  var newArrayPositionObject = getRandomDir( oldArrayPosition );
  
  var newCanvasPosition = getCanvasPosition( newArrayPositionObject.position );
  
  if ( newArrayPositionObject.draw ) {
  
  	if ( command === 'M' ) {
    
    	changePath( command, getCanvasPosition( oldArrayPosition ) );
      changePath( 'L', newCanvasPosition );
    
    } else if ( command === 'L' ) {
    	
      changePath( command, newCanvasPosition );
    
    } 

	} else {
    
  	changePath( 'M', newCanvasPosition );
    changePath( command, newCanvasPosition );
    
  }
  
  posHolder = newArrayPositionObject.position;
  
};

//---

function getCanvasPosition( position ) {

	return { x:position.x * ( LINE_WIDTH + LINE_DISTANCE ) + LINE_WIDTH, y:position.y * ( LINE_WIDTH + LINE_DISTANCE ) + LINE_WIDTH };

};

function getRandomStartPos() {

	var x = Math.floor( Math.random() * lineHolder.length );
  var y = Math.floor( Math.random() * lineHolder[ 0 ].length );

	return { x:x, y:y };

};

function getRandomDir( position ) {

	var newPositionObject = {};
	var newPositions = [];

	if (!patternCurrent) {
  
  	setRandomPattern();
  
  }
  
  //console.log( patternCurrent );
  
  if ( patternCurrent === patternRandom ) {
  
  	if ( position.x - 1 > -1 && position.x - 1 < lineHolderWidth && lineHolder[ position.x - 1 ][ position.y ] === 0 ) {
  
      newPositions.push( { x:position.x - 1, y:position.y } );

    }

    if ( position.x + 1 > -1 && position.x + 1 < lineHolderWidth && lineHolder[ position.x + 1 ][ position.y ] === 0 ) {

      newPositions.push( { x:position.x + 1, y:position.y } );

    }

    if ( position.y - 1 > -1 && position.y - 1 < lineHolderHeight && lineHolder[ position.x ][ position.y - 1 ] === 0 ) {

      newPositions.push( { x:position.x, y:position.y - 1 } );

    }

    if ( position.y + 1 > -1 && position.y + 1 < lineHolderHeight && lineHolder[ position.x ][ position.y + 1 ] === 0 ) {

      newPositions.push( { x:position.x, y:position.y + 1 } );

    }
  
  } else {
  
  	var p;
    
    if ( patternCurrent.indexAscending ) {
    
    	p = patternCurrent.coords[ patternCurrent.index ];
    
    } else {
    
    	p = patternCurrent.coords[ 0 ];
    
    }
    
    //patternCurrent.position.x += position.x + p.x;
    //patternCurrent.position.y += position.y + p.x;
    
    if ( position.x + p.x > -1 && position.x + p.x < lineHolderWidth && position.y + p.y > -1 && position.y + p.y < lineHolderHeight && lineHolder[ position.x + p.x ][ position.y + p.y ] === 0 ) {

      newPositions.push( { x:position.x + p.x, y:position.y + p.y } );

    }
  
  }
	
  patternCurrent.index++;
  
  //console.log( patternCurrent.index, patternCurrent.maxLength );
  
  
  
  if ( patternCurrent.index === patternCurrent.currentLength ) {
  	
    patternCurrent.index = 0;
    patternCurrent.currentLength = 0;
  	patternCurrent = null;
    
    tidyUpPatterns();
    
    //console.log("NEXT");
    //clearInterval( interval );
  
  }
  
  if ( newPositions.length === 0 ) {
  
    newPositionObject.draw = false;
    
    if ( halftime ) {

      newPositionObject.position = getPosNearBy( position, lineHolder.length * lineHolder[ 0 ].length );
    
    } else {
    
    	newPositionObject.position = getPosRandomly( position, lineHolder.length * lineHolder[ 0 ].length );
    
    }
    
  } else {
  
  	newPositionObject.draw = true;

    if ( newPositions.length === 1 ) {
    
    	newPositionObject.position = newPositions[ 0 ];
    
    } else if ( newPositions.length > 1 ) {
      
      newPositionObject.position = newPositions[ Math.floor( Math.random() * newPositions.length ) ];
    
    }
  
  }

  lineHolder[ newPositionObject.position.x ][ newPositionObject.position.y ] = 1;

  return newPositionObject;

};

function getPosRandomly( position ) {

	var newPositions = [];
  
  for ( var x = 0; x < lineHolderWidth; x++ ) {

    for ( var y = 0; y < lineHolderHeight; y++ ) {

      if ( lineHolder[ x ][ y ] === 0 ) {
      
      	newPositions.push( { x:x, y:y } );
      
      }
    
    }
  
  }
  
  return newPositions[ Math.floor( Math.random() * newPositions.length ) ];

};

function getPosNearBy( position, maxRadius = 100 ) {

	for ( var radius = 1; radius < maxRadius; radius++ ) {
  
  	var newPositions = [];
  
  	var xs = position.x - radius;
    var ys = position.y - radius;
    var xe = position.x + radius;
    var ye = position.y + radius;

    for ( var x = xs; x < xe; x++ ) {

      for ( var y = ys; y < ye; y++ ) {

        if ( x > -1 && x < lineHolderWidth && y > -1 && y < lineHolderHeight && lineHolder[ x ][ y ] === 0 ) {

          newPositions.push( { x:x, y:y } );

        }

      }

    }
    
    if ( newPositions.length === 1 ) {
    
    	return newPositions[ 0 ];
    
    } else if ( newPositions.length > 1 ) {
      
      return newPositions[ Math.floor( Math.random() * newPositions.length ) ];
    
    }
  
  }

};

//---

function setRandomPattern() {

	if ( halftime ) {
  
		patternCurrent = patternRandom;
    
  } else {
  
  	patternCurrent = patterns[ Math.floor( Math.random() * patterns.length ) ];
  
  }
  
  if ( patternCurrent.allowLimit ) {
  
  	patternCurrent.currentLength = Math.floor( Math.random() * ( patternCurrent.maxLength - 5 ) ) + 5;//min length 5
  
  } else {
  
  	patternCurrent.currentLength = patternCurrent.maxLength;
  
  }
  
};

function tidyUpPatterns() {

	for ( var i = 0; i < patterns.length; i++ ) {

		var pattern = patterns[ i ];
    		pattern.index = 0;
        pattern.currentLength = 0;
  
  }

};

//---

function createCanvas( width, height, containerId ) {

  var canvas = document.createElementNS( 'http://www.w3.org/2000/svg', 'svg' );
      canvas.setAttribute( 'width', width );
      canvas.setAttribute( 'height', height );
	
  var container = document.getElementById( containerId );
  		container.appendChild( canvas );
      
  return canvas;

};

function createPath( color, w, lineCap ) {

	var path = document.createElementNS( 'http://www.w3.org/2000/svg', 'path' );
  		path.setAttribute( 'd', '' );
  		path.setAttribute( 'stroke', color );
      path.setAttribute( 'stroke-width', w );
      path.setAttribute( 'stroke-linecap', lineCap );
      path.setAttribute( 'fill', 'transparent' );
      
  return path;

};

function changePath( command, position ) {

	pathCoordinates += command + ' ' + position.x + ' ' + position.y + ' ';
  path.setAttribute( 'd', pathCoordinates );

};

function closePath() {

	pathCoordinates += 'Z';
  path.setAttribute( 'd', pathCoordinates );
  
};
  
//---

init();
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