This commit was generated by cvs2svn to compensate for changes in r2423,

which included commits to RCS files with non-trunk default branches.

svn path=/trunk/externals/tb/; revision=2424

1 files changed, 121 insertions, 0 deletions

diff --git a/chaos/src/bungalow_tent_map.hpp b/chaos/src/bungalow_tent_map.hpp
new file mode 100644
index 0000000..6708eae
--- /dev/null
+++ b/chaos/src/bungalow_tent_map.hpp
@@ -0,0 +1,121 @@
+// 
+//  
+//  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"
+
+//  bungalow_tent map: x[n+1] = 1 + 2 * r + 2 * (r + 1) * x[n] 
+//                                                (for -1 <= x[n] < -0.5f)
+//                              1 + 2 * (1 - r) * (x[n])
+//                                                (for -0.5 <= x[n] < 0)
+//                              1 + 2 * (r - 1) * (x[n])
+//                                                (for 0 <= x[n] < 0.5)
+//                              1 + 2 * r - 2 * (r + 1) * (x[n])
+//                                                (for 0.5 <= x[n] < 1)
+//                              -1 <= x[n] <  1
+//                              -0.5 <= r < 1
+//  taken from Willi-Hans Steeb: Chaos and Fractals
+
+class bungalow_tent:
+	protected map_base
+{
+public:
+	bungalow_tent()
+		: m_r(0.5)
+	{
+		m_num_eq = 1;
+		m_data = new data_t[1];
+		set_x(0.5f);
+	}
+
+	~bungalow_tent()
+	{
+		delete m_data;
+	}
+
+	virtual void m_step()
+	{
+		data_t x = m_data[0];
+		data_t r = m_r;
+		
+		if ( x < - 0.5)
+		{
+			m_data[0] = 1 + 2 * r + 2 * (r + 1) * x;
+			return;
+		}
+		if ( x < 0)
+		{
+			m_data[0] = 1 + 2 * (1 - r) * x;
+			return;
+		}
+		if ( x < 0.5)
+		{
+			m_data[0] = 1 + 2 * (r - 1) * x;
+			return;
+		}
+		else
+		{
+			m_data[0] = 1 + 2 * r - 2 * (r + 1) * x;
+			return;
+		}
+
+	}
+
+	void set_x(t_float f)
+	{
+		if ( (f > -1) && (f < 1))
+			m_data[0] = (data_t) f;
+		else
+			post("value for x %f out of range", f);
+	}
+
+	t_float get_x()
+	{
+		return (t_float)m_data[0];
+	}
+
+	void set_r(t_float f)
+	{
+		if ( (f > -.5) && (f < 1))
+			m_data[0] = (data_t) f;
+		else
+			post("value for r %f out of range", f);
+	}
+
+	t_float get_r()
+	{
+		return (t_float)m_data[0];
+	}
+
+private:
+	data_t m_r;
+
+};
+
+
+#define BUNGALOW_TENT_CALLBACKS						\
+MAP_CALLBACKS;										\
+FLEXT_CALLVAR_F(m_system->get_r, m_system->set_r);	\
+FLEXT_CALLVAR_F(m_system->get_x, m_system->set_x);	\
+
+
+#define BUNGALOW_TENT_ATTRIBUTES							\
+MAP_ATTRIBUTES;												\
+FLEXT_ADDATTR_VAR("r",m_system->get_r, m_system->set_r);	\
+FLEXT_ADDATTR_VAR("x",m_system->get_x, m_system->set_x);