//
// 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 PROJECTIONSPHAERIC_H
#define PROJECTIONSPHAERIC_H

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

class ProjectionSphaeric : public Projection {
	private:

		double comp_scale(const Hill *m1, const Hill *m2, double d_m1_m2_2);
		double comp_dir_view(const Hill *m1, const Hill *m2, double d_m1_2, double d_m2_2, double scale, double sign3);
		double comp_nick_view(const Hill *m1, const Hill *m2, double d_m1_2, double scale, double dir_view, double sign1);
		double comp_tilt_view(const Hill *m, double scale, double dir_view, double nick_view);

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

		int comp_params(const Hills *h, ViewParams *parms);
};
#endif