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// 
//  
//  chaos~
//  Copyright (C) 2004  Tim Blechmann
//  
//  This program 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 2 of the License, or
//  (at your option) any later version.
//  
//  This program 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; see the file COPYING.  If not, write to
//  the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
//  Boston, MA 02111-1307, USA.

#include "map_base.hpp"

//  tent map: x[n+1] = 1 - 2*abs(x[n])
//                     -1 < x[n] < 1
//  taken from Julien C. Sprott, Strange Attractors: Creating Patterns in Chaos


class tent_map:
	public map_base
{
public:
	tent_map():
		map_base(1)
	{
		CHAOS_SYS_INIT(x, 0.6,0);
	}
	
	~tent_map()
	{
		
	}

	virtual void m_step()
	{
		data_t data = m_data[0];
		
		m_data[0] = 1 - 2*CHAOS_ABS(data);
	}
	
	CHAOS_SYSVAR_FUNCS_PRED(x, 0, m_pred_x);
	bool m_pred_x(t_float f)
	{
		return (f > -1) && (f < 1);
	}
};


#define TENT_MAP_CALLBACKS						\
MAP_CALLBACKS									\
CHAOS_SYS_CALLBACKS(x);

#define TENT_MAP_ATTRIBUTES						\
MAP_ATTRIBUTES									\
CHAOS_SYS_ATTRIBUTE(x);