forked from Mirrorlandia_minetest/minetest
70 lines
2.0 KiB
C++
70 lines
2.0 KiB
C++
/*
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Minetest-c55
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Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef NOISE_HEADER
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#define NOISE_HEADER
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double easeCurve(double t);
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// Return value: -1 ... 1
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double noise2d(int x, int y, int seed);
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double noise3d(int x, int y, int z, int seed);
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double noise2d_gradient(double x, double y, int seed);
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double noise3d_gradient(double x, double y, double z, int seed);
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double noise2d_perlin(double x, double y, int seed,
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int octaves, double persistence);
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double noise2d_perlin_abs(double x, double y, int seed,
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int octaves, double persistence);
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double noise3d_perlin(double x, double y, double z, int seed,
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int octaves, double persistence);
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double noise3d_perlin_abs(double x, double y, double z, int seed,
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int octaves, double persistence);
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class NoiseBuffer
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{
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public:
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NoiseBuffer();
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~NoiseBuffer();
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void clear();
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void create(int seed, int octaves, double persistence,
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double pos_scale,
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double first_x, double first_y, double first_z,
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double last_x, double last_y, double last_z,
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double samplelength_x, double samplelength_y, double samplelength_z);
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void intSet(int x, int y, int z, double d);
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double intGet(int x, int y, int z);
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double get(double x, double y, double z);
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private:
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double *m_data;
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double m_start_x, m_start_y, m_start_z;
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double m_samplelength_x, m_samplelength_y, m_samplelength_z;
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int m_size_x, m_size_y, m_size_z;
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};
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#endif
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