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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.
#ifndef __ode_base_hpp
#include "chaos_base.hpp"
class ode_base
: public chaos_base
{
public:
ode_base(int n):
chaos_base (n)
{
for (int i = 0; i != 3; ++i)
{
m_k[i] = new data_t[n];
}
m_tmp = new data_t[n];
}
~ode_base()
{
for (int i = 0; i != 3; ++i)
{
delete[] m_k[i];
}
delete[] m_tmp;
}
void set_method(int i)
{
if (i >=0 && i <4)
{
m_method = (unsigned char) i;
switch (i)
{
case 0:
m_routine = &ode_base::rk1;
break;
case 1:
m_routine = &ode_base::rk2;
break;
case 2:
m_routine = &ode_base::rk4;
}
}
else
post("no such method");
}
t_int get_method()
{
return (int) m_method;
}
CHAOS_SYSPAR_FUNCS_PRED(dt, m_pred_dt);
bool m_pred_dt(t_float f)
{
return (f >= 0);
}
virtual void m_step()
{
(this->*m_routine)();
}
protected:
void (ode_base::*m_routine)(void);
unsigned char m_method; /* 0: rk1, 1: rk2, 3: rk4 */
data_t* m_k[3]; /* temporary arrays for runge kutta */
data_t* m_tmp;
virtual void m_system (data_t* deriv, data_t* data) = 0;
void rk1 ();
void rk2 ();
void rk4 ();
};
#define ODE_CALLBACKS \
CHAOS_CALLBACKS; \
CHAOS_SYS_CALLBACKS_I(method); \
CHAOS_SYS_CALLBACKS(dt);
#define ODE_ATTRIBUTES \
CHAOS_ATTRIBUTES; \
CHAOS_SYS_ATTRIBUTE(method); \
CHAOS_SYS_ATTRIBUTE(dt);
#define __ode_base_hpp
#endif /* __ode_base_hpp */
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