Check to see if a layer is overlapping another layer (+/- some threshold) or is completely inside it

framerLayerOverlapping.coffee

Layer::isOverlapping = (targetLayer, offset = 0) ->
	if @screenFrame.x + @width + offset >= targetLayer.screenFrame.x &&
	@screenFrame.x - offset <= targetLayer.screenFrame.x + targetLayer.width &&
	@screenFrame.y + @height + offset >= targetLayer.screenFrame.y &&
	@screenFrame.y - offset <= targetLayer.screenFrame.y + targetLayer.height
		true
	else
		false
		
Layer::isInside = (targetLayer, offset = 0) ->
	if @screenFrame.x + offset >= targetLayer.screenFrame.x &&
	@screenFrame.x - offset <= targetLayer.screenFrame.x + targetLayer.width - @width &&
	@screenFrame.y + offset >= targetLayer.screenFrame.y  &&
	@screenFrame.y - offset <= targetLayer.screenFrame.y + targetLayer.height - @height
		true
	else
		false