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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"
#include <cmath>
// gauss map: x[n+1] = 0 (for x[n] = 0)
// fmod(1 / x[n], 1) (else)
// 0 <= x[n] < 1
// taken from Willi-Hans Steeb: Chaos and Fractals
class gauss_map:
public map_base
{
public:
gauss_map():
map_base(1)
{
CHAOS_SYS_INIT(x,0.5, 0);
}
~gauss_map()
{
}
virtual void m_step()
{
data_t data = m_data[0];
if (data == 0)
m_data[0] = 0.001;
else
m_data[0] = fmod(1.f / data, 1);
}
CHAOS_SYSVAR_FUNCS_PRED(x, 0, m_pred_x);
bool m_pred_x(t_float f)
{
return (f >= 0) && (f < 1);
}
};
#define GAUSS_MAP_CALLBACKS \
MAP_CALLBACKS; \
CHAOS_SYS_CALLBACKS(x);
#define GAUSS_MAP_ATTRIBUTES \
MAP_ATTRIBUTES; \
CHAOS_SYS_ATTRIBUTE(x);
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