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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */

/*

 * mazen-ng

 * Copyright (C) Jacob Zimmermann 2009 <jacob@jzimm.net>

 * 

 * mazen-ng is free software: you can redistribute it and/or modify it

 * under the terms of the GNU General Public License as published by the

 * Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 * 

 * mazen-ng is distributed in the hope that it will be useful, but

 * WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

 * See the GNU General Public License for more details.

 * 

 * You should have received a copy of the GNU General Public License along

 * with this program.  If not, see <http://www.gnu.org/licenses/>.

 */



#ifndef _POLAR_VIEW_H_

#define _POLAR_VIEW_H_



#include <gtkmm.h>

#include <vector>

#include "grid-view.h"



struct xy;



class PolarView: public GridView 

{

	private:

		std::vector<Cairo::Matrix> rot;

		int width, height;

		double maze_x, maze_y;

		int prev_x, prev_y;

		void sol_path_add (Cairo::RefPtr<Cairo::Context> cr, const xy& p);

		

	protected:

		PolarView ();



		double gap () const;

		inline double angle_gap (double r) const {

			return asin (gap () / r);

		}

		

		double angle;

		Cairo::Rectangle cent_room_rect;



		void point_coord (int y, double& dx, double& dy) const;

		double radius_for_x (int x) const { return radius_for_x ((double) x); }

		double radius_for_x (double x) const;



		enum cline_type { NORMAL, OPEN, CLOSED };

		virtual void rline (Cairo::RefPtr<Cairo::Context> cr, int y, double r, bool off) const;

		virtual void cline (Cairo::RefPtr<Cairo::Context> cr, int y, double r, cline_type ltype) const = 0;



	public:

		virtual void set_maze (Glib::RefPtr<GridMaze> maze);

		virtual void set_size (int width, int height);

		virtual void render (Cairo::RefPtr<Cairo::Context> cr, Artwork::Renderer& renderer);

		virtual void render_solution (Cairo::RefPtr<Cairo::Context> cr, Artwork::Renderer& renderer);		

};



#endif // _POLAR_VIEW_H_