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author | Tim Blechmann <timblech@users.sourceforge.net> | 2004-12-21 09:22:10 +0000 |
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committer | IOhannes m zmölnig <zmoelnig@iem.at> | 2015-10-14 15:11:57 +0200 |
commit | 5233c01a26329306c9f1d08c1a39733aee2cc518 (patch) | |
tree | 27ea384742c0ebeed4439ab0874ea1af79f1bccf /chaos/src/henon_map.hpp | |
parent | cde59e47632b062410739af9064d906be182e589 (diff) |
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
Diffstat (limited to 'chaos/src/henon_map.hpp')
-rw-r--r-- | chaos/src/henon_map.hpp | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/chaos/src/henon_map.hpp b/chaos/src/henon_map.hpp new file mode 100644 index 0000000..d29e8a7 --- /dev/null +++ b/chaos/src/henon_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" + +// henon map: x[n+1] = y[n] + 1 - a * x[n] * x[n] +// y[n+1] = b * x[n] +// b != 0 +// taken from Willi-Hans Steeb: Chaos and Fractals + +class henon: + protected map_base +{ +public: + henon() + : m_a(1.4), m_b(0.3) + { + m_num_eq = 2; + m_data = new data_t[1]; + set_x(0.f); + set_y(0.f); + } + + ~henon() + { + delete m_data; + } + + virtual void m_step() + { + data_t x = m_data[0]; + data_t y = m_data[1]; + + m_data[0] = 1 + y - m_a * x * x; + m_data[1] = m_b * 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_y(t_float f) + { + m_data[1] = (data_t) f; + } + + t_float get_y() + { + return (t_float)m_data[1]; + } + + + void set_a(t_float f) + { + m_a = (data_t) f; + } + + t_float get_a() + { + return (t_float)m_a; + } + + + void set_b(t_float f) + { + if (f != 0) + m_b = (data_t) f; + else + post("value for b %f out of range", f); + } + + t_float get_b() + { + return (t_float)m_b; + } + +private: + data_t m_a; + data_t m_b; +}; + + +#define HENON_CALLBACKS \ +MAP_CALLBACKS; \ +FLEXT_CALLVAR_F(m_system->get_a, m_system->set_a); \ +FLEXT_CALLVAR_F(m_system->get_b, m_system->set_b); \ +FLEXT_CALLVAR_F(m_system->get_x, m_system->set_x); \ +FLEXT_CALLVAR_F(m_system->get_y, m_system->set_y); + +#define HENON_ATTRIBUTES \ +MAP_ATTRIBUTES; \ +FLEXT_ADDATTR_VAR("a",m_system->get_a, m_system->set_a); \ +FLEXT_ADDATTR_VAR("b",m_system->get_b, m_system->set_b); \ +FLEXT_ADDATTR_VAR("x",m_system->get_x, m_system->set_x); \ +FLEXT_ADDATTR_VAR("y",m_system->get_y, m_system->set_y); |