#define NP 6000
#define AGE 200

#define STREAM 1
#define ORTHO 2

class vecField;
class Circ;

class Renderer
{
public:
	Renderer(int w, int h);
	void Draw(int cond);
	void traceParticle(int i);
	void DrawOver();
	bool AdvectionCrossing(float &cx, float &cy); // why cbr?
	void updateParms(float &cx, float &cy, float &dx, float &dy);
	void updateCursor(float rx,float ry, float &dx, float &dy);


private:
	void initParticles();
	void traceParticle(float *xt, float *yt);
	int Width, Height;

	vecField *VF;
	float x[NP], y[NP];  // The particles start positions
	float **PathsX, **PathsY;  // A set of traces

	Circ *circle;

	float parm1,parm2,parm3;

	float cursX,cursY;


};