var pathArray = new Array();
var pathCollectionNames = new Array();
var dragCircle = false;
var pallete = [30,60,90,120,150,180,210,240,270,300,330,360];

this.updateCircle = function(side){
	var quer = new ComparisonQuery();
	var newColor;
	var oldColor = -1;
	var index = 0;
	if(side == "right")
		index = 1;

	if(typeof(pathArray[index])!="undefined"){
		oldColor = pathArray[index].fillColor.hue;
		pathArray[index].remove();
	}

	pathArray[index] = new Path.Circle(new Point(123 + (index) * 70,85),50);
	pathArray[index].strokeColor = 'black';
	newColor = pallete[Math.floor(Math.random()*pallete.length)];	
	pallete.splice(pallete.indexOf(newColor),1);
	if(oldColor!=-1) 
		pallete.push(oldColor);

	pathArray[index].fillColor = {
		hue: newColor,
		saturation: 5,
		brightness: 1
	};
	pathArray[index].blendMode = 'darken';
	pathArray[index].opacity = .7;
	if(side == "left")
		pathCollectionNames[index] = (leftCollection);
	else if(side == "right")
		pathCollectionNames[index] = (rightCollection);

	return pathArray[index].fillColor.toCSS();
}
function onMouseDrag(event) {
	if(dragCircle==true && event.item!=null)
		event.item.position=event.point;
};

function onMouseDown(event){
	if(!dragCircle){
		//Add circle where clicked
		var s = new Path.Circle(event.point, 4,'#43ae0c');
		s.fillColor = '#000000';
		s.removeOnDown();

		var mousePos = event.point;
		var IndicesUnder = new Array();

		//Loop through circles to see which are under mouse
		for(var i=0; i < pathArray.length; i++){
			if(typeof(pathArray[i])!="undefined"){
				var circlePos = pathArray[i].position;
				var circleRadius = pathArray[i].bounds.width/2;
				var diff = distance(mousePos, circlePos);

				//If circle was clicked on
				if(diff < circleRadius)
					IndicesUnder.push(i);
			}
		}
		if(IndicesUnder.length==2){
				comparisonQuery.type = "intersection";
				comparisonQuery.datasetSelection = "";
		}
		else if(IndicesUnder.length==1){
				comparisonQuery.type = "minus";
				comparisonQuery.datasetSelection = pathCollectionNames[IndicesUnder[0]];
		}
		if(IndicesUnder.length>0) 
			drawComparisonTable();
	}
	//If dragging a circle
	//Move circle to top of active layer
	else
	    project.activeLayer.appendTop(event.item);
}
function distance(p1, p2){
	return Math.sqrt(Math.pow((p1.x - p2.x),2)+Math.pow((p1.y - p2.y),2));
}
function onKeyDown(event) {
	if(event.key == 'control')
		dragCircle=true;
}

function onKeyUp(event) {
	if(event.key == 'control')
		dragCircle=false;
}