1 files changed, 83 insertions, 0 deletions
diff --git a/chaos/src/ode_base.hpp b/chaos/src/ode_base.hpp
new file mode 100644
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+++ b/chaos/src/ode_base.hpp
@@ -0,0 +1,83 @@
+// 
+//  
+//  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.
+
+
+#ifndef __ode_base_hpp
+
+#include "chaos_base.hpp"
+
+class ode_base
+	: protected chaos_base
+{
+public:
+	void set_method(int i)
+	{
+		if (i >=0 && i <4)
+			m_method = (unsigned char) i;
+		post("no such method");
+	}
+
+	t_int get_method()
+	{
+		return (int) m_method;
+	}
+
+	void set_dt(t_float f)
+	{
+		if (f >= 0)
+			m_dt = (data_t)f;
+		else
+			post("invalid value for dt: %f", f);
+	}
+	
+	t_float get_dt()
+	{
+		return (t_float) m_dt;
+	}
+
+	void m_step();
+	
+protected:
+	unsigned char m_method; /* 0: rk1, 1: rk2, 3: rk4 */
+	data_t  m_dt;           /* step width */
+
+	data_t* m_k[3];         /* temporary arrays for runge kutta */
+	data_t* m_tmp;   
+
+	virtual void m_system (data_t* deriv, data_t* data);
+
+	void rk1 ();
+	void rk2 ();
+	void rk4 ();
+};
+
+#define ODE_CALLBACKS											\
+CHAOS_CALLBACKS;												\
+FLEXT_CALLVAR_I(m_system->get_method, m_system->set_method);	\
+FLEXT_CALLVAR_F(m_system->get_dt, m_system->set_dt);
+
+#define ODE_ATTRIBUTES														\
+CHAOS_ATTRIBUTES;															\
+FLEXT_ADDATTR_VAR("method", m_system->get_method, m_system->set_method);	\
+FLEXT_ADDATTR_VAR("dt",m_system->get_dt, m_system->set_dt);
+
+
+#define __ode_base_hpp
+#endif /* __ode_base_hpp */