RnbwNoise

var a = 0.0;
var t = 0;
var drawHeart = function() {
	if(a < Math.PI / 2 || a > Math.PI * 3/2)
		a += 0.20; // for old ghost values: 0.35;
	else
		a += 0.10; // for old ghost values: 0.25; // the top part is more detailed
	
	if(a >= Math.PI * 2)
		a = 0;