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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 PANORAMA_H
#define PANORAMA_H

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



class Panorama {
	private:
		double view_phi, view_lam, view_height;
		char *view_name;
		double height_dist_ratio;
		double view_angle;
		double hide_value;
		Hills *mountains;
		Hills *close_mountains;
		Hills *visible_mountains;
		Projection::Projection *proj;
		Projection::Projection_t projection_type;

		Hill * get_pos(const char *name);

		void update_angles();

		void update_coordinates();

		void update_close_mountains();

		void update_visible_mountains();

		void mark_hidden(Hills *hills);

		double distance(double phi, double lam);

		double sin_alpha(double lam, double phi, double c);

		double cos_alpha(double phi, double c);

		double alpha(double phi, double lam);

		double nick(double dist, double height);

		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);

		int get_matrix(double m[]);

		int optimize(Hill *m1, Hill *m2);

		double get_value(Hills *p);

		double pi_d, deg2rad;

	public:
		ViewParams parms;

		Panorama();

		~Panorama();

		int load_data(const char *name);

		void add_hills(Hills *h);

		void remove_trackpoints();

		int set_viewpoint(const char *pos);  

		void set_viewpoint(const Hill *m);  

		void set_height_dist_ratio(double r);

		void set_hide_value(double h);

		Hills * get_mountains();

		Hills * get_close_mountains();

		Hills * get_visible_mountains();

		void set_center_angle(double a);

		void set_nick_angle(double a);

		void set_tilt_angle(double a);

		void set_scale(double s);

		void set_view_lat(double v);

		void set_view_long(double v);

		void set_view_height(double v);

		const char * get_viewpoint();  

		double get_center_angle();

		double get_nick_angle();

		double get_tilt_angle();

		double get_scale();

		double get_height_dist_ratio();

		double get_view_lat();

		double get_view_long();

		double get_view_height();

		double get_earth_radius(Hill *m);

		double get_real_distance(Hill *m);

		int comp_params(Hills *h);

		int guess(Hills *p1, Hill *m1);

		Projection::Projection_t get_projection();

		void set_projection(Projection::Projection_t p);

		void set_distortion_params(double k0, double k1);

		int get_coordinates(double a_alph, double a_nick, double *x, double *y);
};
#endif