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Diffstat (limited to 'chaos/src/bungalow_tent_map.hpp')
| -rw-r--r-- | chaos/src/bungalow_tent_map.hpp | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/chaos/src/bungalow_tent_map.hpp b/chaos/src/bungalow_tent_map.hpp new file mode 100644 index 0000000..492b6d5 --- /dev/null +++ b/chaos/src/bungalow_tent_map.hpp @@ -0,0 +1,94 @@ +// +// +// 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" + +// bungalow_tent map: x[n+1] = 1 + 2 * r + 2 * (r + 1) * x[n] +// (for -1 <= x[n] < -0.5f) +// 1 + 2 * (1 - r) * (x[n]) +// (for -0.5 <= x[n] < 0) +// 1 + 2 * (r - 1) * (x[n]) +// (for 0 <= x[n] < 0.5) +// 1 + 2 * r - 2 * (r + 1) * (x[n]) +// (for 0.5 <= x[n] < 1) +// -1 <= x[n] < 1 +// -0.5 <= r < 1 +// taken from Willi-Hans Steeb: Chaos and Fractals + +class bungalow_tent: + public map_base<1> +{ +public: + bungalow_tent() + { + CHAOS_SYS_INIT(x, 0.6,0); + CHAOS_PAR_INIT(r, 0.5); + } + + void m_step() + { + data_t x = m_data[0]; + data_t r = CHAOS_PARAMETER(r); + + if ( x < - 0.5) + { + m_data[0] = 1 + 2 * r + 2 * (r + 1) * x; + return; + } + if ( x < 0) + { + m_data[0] = 1 + 2 * (1 - r) * x; + return; + } + if ( x < 0.5) + { + m_data[0] = 1 + 2 * (r - 1) * x; + return; + } + else + { + m_data[0] = 1 + 2 * r - 2 * (r + 1) * x; + return; + } + + } + + CHAOS_SYSVAR_FUNCS_PRED(x, 0, m_pred_x); + bool m_pred_x(t_float f) + { + return (f >= -1) && (f < 1); + } + + CHAOS_SYSPAR_FUNCS_PRED(r, m_pred_r); + bool m_pred_r(t_float f) + { + return (f >= -0.5) && (f < 1); + } +}; + +#define BUNGALOW_TENT_CALLBACKS \ +MAP_CALLBACKS; \ +CHAOS_SYS_CALLBACKS(x); \ +CHAOS_SYS_CALLBACKS(r); + +#define BUNGALOW_TENT_ATTRIBUTES \ +MAP_ATTRIBUTES; \ +CHAOS_SYS_ATTRIBUTE(x) \ +CHAOS_SYS_ATTRIBUTE(r) |