flow-main.js

var canvDiv;

var flow;

var nodes=[];

var curTime=0;
var fps=60;
var sps=120;
//var t0=0;

var dragging=false;
var mouse=[0,0];

var wiring; // wire under consruction: [srcNode,srcPort,wire,pt]

var play=true;

var socket;
var localSocket={};


function init(){
	canvDiv=document.getElementById('container');
	
	if (document.io)
    	socket=io.connect('http://login.sccs.swarthmore.edu:8201');


	makeTypes();
	
	//window.setInterval(step,1000/sps);
	//t0=Date.now()/1000;
	step();
	
	//window.setInterval(draw,1000/fps);
	
	//this is supposed to be better.
	(function animloop(){
      requestAnimFrame(animloop);
      draw();
    })();

    
	var tmpScene=localStorage.getItem('tmpScene');
	if(tmpScene){
	   loadScene(JSON.parse(tmpScene));
	}
	
	/*
	logger=new nodeTypes.Logger({x:500,y:200});
	summer=new nodeTypes.Summer({x:200,y:100});
	mou=new nodeTypes.Mouse( {x:100,y:180});
	tim=new nodeTypes.Time(  {x: 50,y:410});
	sin1=new nodeTypes.Sine( {x: 50,y:300,i:{freq:.5}});
	sin2=new nodeTypes.Sine( {x:200,y:300,i:{freq:4.05}});
	dis=new nodeTypes.Scope( {x:500,y:350});
	cus=new nodeTypes.Custom({x:200,y:400});
	t2=new nodeTypes.X2(	 {x:350,y:150});
	
	
	mkWire(sin1,'y',sin2,'amp',100);
	mkWire(sin2,'y',dis,'y1',220);

	mkWire(summer,'c',t2,'a',0);
	mkWire(t2,'b',logger,'msg',100);
	
	mkWire(tim,'t',cus,'a',320);
	mkWire(tim,'t',dis,'x',320);
	
	mkWire(cus,'x',dis,'y2',0);
	mkWire(cus,'y',dis,'y3',100);
   // mkWire(lfo,'y',dis,'y1',220);
	
	*/
	
	makeLibrary();
	
//	canvDiv.onmousedown=function(e){
//		console.log(e);	
//	}

}
  

var draw=function draw(){
	if(play){
		//step();
		
		for(var ii in nodes){
			nodes[ii].draw();
		}
	}	
}

// main run loop
var step=function step(){
	//curTime=Date.now()/1000-t0;
	if(play){
		curTime+=1/sps;
		
		for(var ii in nodes){
			nodes[ii].eval();
		}
		for(var ii in nodes){
			nodes[ii].progress();  
		}
	
	}
	
	window.setTimeout(step,1000/sps);
}

function unloading(){
	localStorage.setItem('tmpScene',JSON.stringify(exportNodes(nodes)));	
}

//misc utility funcs

Math.dist=function(x1,y1,x2,y2){
	return Math.sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));	
}

objectSize = function(obj) {
	var size = 0, key;
	for (key in obj) {
		if (obj.hasOwnProperty(key)) size++;
	}
	return size;
};


// http://paulirish.com/2011/requestanimationframe-for-smart-animating/
// shim layer with setTimeout fallback
window.requestAnimFrame = (function(){
  return  window.requestAnimationFrame || 
    window.webkitRequestAnimationFrame || 
    window.mozRequestAnimationFrame    || 
    window.oRequestAnimationFrame      || 
    window.msRequestAnimationFrame     || 
    function(/* function */ callback, /* DOMElement */ element){
      window.setTimeout(callback, 1000 / 60);
    };
})();