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Diffstat (limited to 'chaos/src/circle_map.hpp')
| -rw-r--r-- | chaos/src/circle_map.hpp | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/chaos/src/circle_map.hpp b/chaos/src/circle_map.hpp new file mode 100644 index 0000000..c58391a --- /dev/null +++ b/chaos/src/circle_map.hpp @@ -0,0 +1,68 @@ +// +// +// 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" + +#include <cmath> + +// 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: + public map_base<1> +{ +public: + circle_map() + { + CHAOS_SYS_INIT(x, 0.4,0); + + CHAOS_PAR_INIT(omega, 0.1); + CHAOS_PAR_INIT(r, 3); + } + + + void m_step() + { + data_t x = m_data[0]; + data_t omega = CHAOS_PARAMETER(omega); + data_t r = CHAOS_PARAMETER(r); + + m_data[0] = x + omega - r / (2.f * M_PI) * sin (2.f * M_PI * x); + } + + CHAOS_SYSVAR_FUNCS(x,0); + CHAOS_SYSPAR_FUNCS(r); + CHAOS_SYSPAR_FUNCS(omega); +}; + +#define CIRCLE_MAP_CALLBACKS \ +MAP_CALLBACKS; \ +CHAOS_SYS_CALLBACKS(omega); \ +CHAOS_SYS_CALLBACKS(r); \ +CHAOS_SYS_CALLBACKS(x); + + +#define CIRCLE_MAP_ATTRIBUTES \ +MAP_ATTRIBUTES; \ +CHAOS_SYS_ATTRIBUTE(omega); \ +CHAOS_SYS_ATTRIBUTE(r); \ +CHAOS_SYS_ATTRIBUTE(x); + |