#ifndef _PHYSICS_CIRCLE_
#define _PHYSICS_CIRCLE_

#include "body.h"

#include <wgd/math.h>
#include <wgd/vector.h>

#define CIRCLE_POINTS 64

class Circle : public Body
{
	public:
	Circle (const wgd::InstanceID &);
	
	void update();
	void draw();
	
	float getArea () const { return wgd::PI * getRadius() * getRadius(); }
	
	float getMinX ();
	float getMaxX ();
	float getMinY ();
	float getMaxY ();
	
	float getMomentOfInertia () const { return getMass() * getRadiusSq() / 2; }
	
	bool contains (const wgd::Vector2D& p);
	
	wgd::Vector2D getExtremePoint (const wgd::Vector2D& direction, int& i) const
	{
		i = 0;
		
		return position() + direction * getRadius();
	}
	
	INSTANCE(Body, Circle, "circle");
	
	private:
	
	static float draw_x[CIRCLE_POINTS];
	static float draw_y[CIRCLE_POINTS];
};

#endif