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//
// Copyright 2006 Johannes Hofmann <Johannes.Hofmann@gmx.de>
//
// This software may be used and distributed according to the terms
// of the GNU General Public License, incorporated herein by reference.

#ifndef PROJECTIONTANGENTIAL_H
#define PROJECTIONTANGENTIAL_H

#include "Hill.H"
#include "Projection.H"

class ProjectionTangential : public Projection {
	private:
		double comp_center_angle(double alph_a, double alph_b, double d1, double d2);

		double comp_scale(double alph_a, double alph_b, double d1, double d2);

		double angle_dist(double a1, double a2);

		int optimize(const Hill *m1, const Hill *m2, ViewParams *parms);

	public:
		void get_coordinates(double a_view, double a_nick, const ViewParams *parms,
			double *x, double *y);

		int comp_params(const Hill *m1, const Hill *m2, ViewParams *parms);
};
#endif