1. Circle Test 1
2. Circle Test 2
3. Curve Test 1

function CircleEquation(dt, steps, r) {
	Frozen.Chart.Equation.call(this, steps, dt);
	this.r = r;
}
CircleEquation.prototype = new Frozen.Chart.Equation;
CircleEquation.prototype.next = function() {
	this.x = Math.cos(this.t) * this.r;
	this.y = Math.sin(this.t) * this.r;
	return Frozen.Chart.Equation.prototype.next.apply(this);
};

function circleTest1() {
	chart.clear();
	chart.map.lineWidth = 0.5;
	chart.renderEquation(new CircleEquation(4.5, 75, 95));
}

function SpiralEquation(r1, dt1, r2, dt2, steps) {
	Frozen.Chart.Equation.call(this, steps);
	this.c1 = new CircleEquation(dt1, steps, r1);
	this.c2 = new CircleEquation(dt2, steps, r2);
}
SpiralEquation.prototype = new Frozen.Chart.Equation;
SpiralEquation.prototype.next = function() {
	this.c1.next();
	this.c2.next();
	this.x = this.c1.x + this.c2.x;
	this.y = this.c1.y + this.c2.y;
	return Frozen.Chart.Equation.prototype.next.apply(this);
};
function circleTest2() {
	chart.clear();
	chart.map.lineWidth = 0.5;
	chart.renderEquation(new SpiralEquation(50, 1, 75, 1.75, 720));
}

function CurvesEquation(r1, r2, r3, r4, dt, steps) {
	Frozen.Chart.Equation.call(this, steps, dt);
	this.c1 = new CircleEquation(-dt, steps, r1);
	this.c2 = new CircleEquation(dt, steps, r2);
	this.c3 = new CircleEquation(dt, steps, r3);
	this.c4 = new CircleEquation(dt, steps, r4);
}
CurvesEquation.prototype = new Frozen.Chart.Equation;
CurvesEquation.prototype.next = function() {
	this.c1.next();
	this.c2.next();
	this.c3.next();
	this.c4.next();
	this.x1 = this.c4.x;
	this.y1 = this.c4.y;
	this.x2 = this.c3.x;
	this.y2 = this.c3.y;
	this.x = this.c1.x + this.c2.x;
	this.y = this.c1.y + this.c2.y;
	return Frozen.Chart.Equation.prototype.next.apply(this);
};
function curveTest1() {
	chart.clear();
	chart.map.lineWidth = 0.2;
	chart.renderEquationCurves(new CurvesEquation(-135, -165, 150, 325, 5.5, 720));
}