From 5233c01a26329306c9f1d08c1a39733aee2cc518 Mon Sep 17 00:00:00 2001
From: Tim Blechmann <timblech@users.sourceforge.net>
Date: Tue, 21 Dec 2004 09:22:10 +0000
Subject: 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
---
 chaos/src/circle_map.hpp | 106 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100644 chaos/src/circle_map.hpp

(limited to 'chaos/src/circle_map.hpp')

diff --git a/chaos/src/circle_map.hpp b/chaos/src/circle_map.hpp
new file mode 100644
index 0000000..f1ef406
--- /dev/null
+++ b/chaos/src/circle_map.hpp
@@ -0,0 +1,106 @@
+// 
+//  
+//  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"
+
+//  circle_map map: x[n+1] = x[n] * omega - r / (2*pi) * sin (2 * pi * x [n])
+// 
+//  taken from Willi-Hans Steeb: Chaos and Fractals
+
+class circle_map:
+	protected map_base
+{
+public:
+	circle_map()
+		: m_omega(0.4), m_r(1)
+	{
+		m_num_eq = 1;
+		m_data = new data_t[1];
+		set_x(0.5);
+	}
+
+	~circle_map()
+	{
+		delete m_data;
+	}
+
+	virtual void m_step()
+	{
+		data_t x = m_data[0];
+		data_t omega = m_omega;
+		data_t r = m_r;
+		
+		m_data[0] = x + omega - r / (2.f * M_PI) * sin (2.f * M_PI * x);
+	}
+
+	void set_x(t_float f)
+	{
+		m_data[0] = (data_t) f;
+	}
+
+	t_float get_x()
+	{
+		return (t_float)m_data[0];
+	}
+
+	void set_r(t_float f)
+	{
+		m_r = (data_t) f;
+	}
+
+
+	t_float get_r()
+	{
+		return (t_float)m_r;
+	}
+
+
+	void set_omega (t_float f)
+	{
+		m_omega = (data_t) f;
+	}
+
+	t_float get_omega()
+	{
+		return (t_float)m_omega;
+	}
+	
+
+private:
+	data_t m_omega;
+	data_t m_r;
+};
+
+#define CIRCLE_MAP_CALLBACKS								\
+MAP_CALLBACKS;												\
+FLEXT_ATTRVAR_F(m_system->m_omega);							\
+FLEXT_ATTRVAR_F(m_system->m_r);								\
+FLEXT_CALLVAR_F(m_system->get_omega, m_system->set_omega);	\
+FLEXT_CALLVAR_F(m_system->get_r, m_system->set_r);			\
+FLEXT_CALLVAR_F(m_system->get_x, m_system->set_x);
+
+#define CIRCLE_MAP_ATTRIBUTES											\
+MAP_ATTRIBUTES;															\
+FLEXT_ADDATTR_VAR1("omega",m_system->m_omega);							\
+FLEXT_ADDATTR_VAR1("r",m_system->m_r);									\
+FLEXT_ADDATTR_VAR("omega",m_system->get_omega, m_system->set_omega);	\
+FLEXT_ADDATTR_VAR("r",m_system->get_r, m_system->set_r);				\
+FLEXT_ADDATTR_VAR("x",m_system->get_x, m_system->set_x);
+
-- 
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