2011-02-05 13:56:01 +01:00
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/*
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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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2011-02-06 15:35:27 +01:00
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double easeCurve(double t);
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2011-02-05 13:56:01 +01:00
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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 noise2d_gradient(double x, double y, 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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#endif
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