main.js

var nodes = [], edges = [], iter = 0;
var replusion = {},  attraction = {}, spring = {}; 
var stopAnimation, textbox;

var MaxIterations = 750;
var displayRate = 25;

function main()
{
	 init();
	 loopAnimate();
}

function loopAnimate()
{
 	if(iter > MaxIterations)
 		return;
  	
  	iter++;
	if(iter % displayRate == 0)
 	draw();
	reposition();
	stopAnimation = requestAnimationFrame(loopAnimate);
}

function init()
{

	canvas = document.getElementById("canvas");
	textbox = document.getElementById("textbox");
	textbox.addEventListener("keydown", enterText, false);

	canvas.addEventListener("mousedown", clickChildNode, false);
	canvas.addEventListener("mousemove", moveNode, false);
	canvas.addEventListener("mouseup", stopMovingNode, false);
	window.addEventListener("keydown", keyDown, false);
	window.addEventListener("keyup", keyUp, false);
    createStartNode();
	//createNetwork();

}

replusion.alter = function(element)
{
	repulsion_constant = element.value;
	console.log("repel: "+repulsion_constant);
};
	
spring.alter = function(element)
{
	springLength = element.value;
	console.log("spring: "+springLength);
};

attraction.alter = function(element)
{
	attraction_constant = element.value;
	console.log("attrac: "+attraction_constant); 
};