class vecField
{
public:
	vecField(int x, int y, int scl);
	void getVec(float x,float y, float &dx,float &dy); 	
	float **dX;
	float **dY;

	float **normX;
	float **normY;

	void updateParms();

private:
	int nX,nY;

	float parm1,parm2,parm3;
	float signx,signy;
	float sinT,cosT;

	// North Pacific data set data
	int Prows, Pcols;
	float **Pxv, ** Pyv;


};
/*
class Pacific
{
	public:
	Pacific();

	void getVec(float X,float Y, float &dx, float &dy);
	// input a vector defined on [0..1][0..1]. 
	// output a velocity vector.

	private:

	int rows,cols;

	float **xv;
	float **yv;
};
*/