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Diffstat (limited to 'chaos/src/tent_map.hpp')
| -rw-r--r-- | chaos/src/tent_map.hpp | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/chaos/src/tent_map.hpp b/chaos/src/tent_map.hpp new file mode 100644 index 0000000..16de333 --- /dev/null +++ b/chaos/src/tent_map.hpp @@ -0,0 +1,63 @@ +// +// +// 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" + +// tent map: x[n+1] = 2 * x[n] (for 0 < x <= 0.5) +// 2 * (1 - x[n]) (else) +// 0 <= x[n] < 1 +// taken from Willi-Hans Steeb: Chaos and Fractals + +class tent: + protected map_base +{ +public: + tent() + { + m_num_eq = 1; + m_data = new data_t[1]; + set_x(0.5); + } + + ~tent() + { + delete m_data; + } + + virtual void m_step() + { + data_t data = m_data[0]; + + if (data < 0.5f) + m_data[0] = 2.f * data; + else + m_data[0] = 2.f * (1.f - data); + } +}; + + +#define LOGISTIC_CALLBACKS \ +MAP_CALLBACKS \ +FLEXT_CALLVAR_F(m_system->get_x, m_system->set_x); + +#define LOGISTIC_ATTRIBUTES \ +MAP_ATTRIBUTES \ +FLEXT_ADDATTR_VAR("x",m_system->get_x, m_system->set_x); + |