ondras/LICENSE.txt

## README.md

      
    Raw
  

              README.md
            
          
    Sierpinski triangle


Trivial Sierpinski triangle fractal implementation, drawn into a HTML canvas. Based on the "Chaos game" algorithm - drawing pointer moving towards randomly chosen triangle vertices.
For more information

See the 140byt.es site for a showcase of entries (built itself using 140-byte entries!), and follow @140bytes on Twitter.
To learn about byte-saving hacks for your own code, or to contribute what you've learned, head to the wiki.
140byt.es is brought to you by Jed Schmidt, with help from Alex Kloss. It was inspired by work from Thomas Fuchs and Dustin Diaz.

  
## annotated.js
function (c,s,i,a,b,r) {            // c=context; s=size; i=iterations; a,b=pointer coords
  for (;i--;r=Math.random()*3)      // draw 'i' pixels; in each iteration, pick a number 0..2
    c.fillRect(                     // draw pixel at current pointer's location [a,b]
      a = (r>2)*s+a >> 1,           // adjust the pointer's location by moving half way towards
      b = (r<1)*s+b >> 1,           // a randomly chosen vertex of a triangle [s,0],[0,0],[0,s]
      1, 1                          // (pixel size)
    )
}

## index.js
function(c,s,i,a,b,r){for(;i--;r=Math.random()*3)c.fillRect(a=(r>2)*s+a>>1,b=(r<1)*s+b>>1,1,1)}

## LICENSE.txt
            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
                    Version 2, December 2004

 Copyright (C) 2012 Ondrej Zara <http://ondras.zarovi.cz/>

 Everyone is permitted to copy and distribute verbatim or modified
 copies of this license document, and changing it is allowed as long
 as the name is changed.

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  0. You just DO WHAT THE FUCK YOU WANT TO.

## package.json
{
  "name": "sierpinskiTriangle",

  "description": "Sierpinski triangle drawn into HTML canvas.",

  "keywords": [
    "sierpinski",
    "triangle",
    "gasket",
    "fractal",
    "canvas"
  ]
}

## test.html
<!doctype html>
<html>
	<body>
		<canvas id="canvas" width="500" height="500"></canvas>
<script>
var sierpinski = function(c,s,i,a,b,r){for(;i--;r=Math.random()*3)c.fillRect(a=(r>2)*s+a>>1,b=(r<1)*s+b>>1,1,1)}
sierpinski(document.getElementById("canvas").getContext("2d"), 500, 100000);
</script>

	</body>
</html>
	function (c,s,i,a,b,r) { // c=context; s=size; i=iterations; a,b=pointer coords
	for (;i--;r=Math.random()*3) // draw 'i' pixels; in each iteration, pick a number 0..2
	c.fillRect( // draw pixel at current pointer's location [a,b]
	a = (r>2)*s+a >> 1, // adjust the pointer's location by moving half way towards
	b = (r<1)*s+b >> 1, // a randomly chosen vertex of a triangle [s,0],[0,0],[0,s]
	1, 1 // (pixel size)
	)
	}
	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
	Version 2, December 2004

	Copyright (C) 2012 Ondrej Zara <http://ondras.zarovi.cz/>

	Everyone is permitted to copy and distribute verbatim or modified
	copies of this license document, and changing it is allowed as long
	as the name is changed.

	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
	TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

	0. You just DO WHAT THE FUCK YOU WANT TO.
	{
	"name": "sierpinskiTriangle",

	"description": "Sierpinski triangle drawn into HTML canvas.",

	"keywords": [
	"sierpinski",
	"triangle",
	"gasket",
	"fractal",
	"canvas"
	]
	}
	<!doctype html>
	<html>
	<body>
	<canvas id="canvas" width="500" height="500"></canvas>
	<script>
	var sierpinski = function(c,s,i,a,b,r){for(;i--;r=Math.random()3)c.fillRect(a=(r>2)s+a>>1,b=(r<1)*s+b>>1,1,1)}
	sierpinski(document.getElementById("canvas").getContext("2d"), 500, 100000);
	</script>

	</body>
	</html>