69 lines
1.9 KiB
C++
69 lines
1.9 KiB
C++
/*
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* This file is part of libgim.
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*
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* libgim is free software: you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* libgim is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with libgim. If not, see <http://www.gnu.org/licenses/>.
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*
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* Copyright 2012 Danny Robson <danny@nerdcruft.net>
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*/
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#ifndef __UTIL_NOISE_FRACTAL_HPP
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#define __UTIL_NOISE_FRACTAL_HPP
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#include "basis.hpp"
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namespace util {
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namespace noise {
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struct fractal {
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fractal (unsigned octaves,
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double frequency,
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double lacunarity);
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fractal ();
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virtual ~fractal ();
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unsigned octaves;
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double frequency;
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double lacunarity;
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virtual double eval (double x, double y) const = 0;
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};
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template <typename B>
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struct fbm : public fractal {
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fbm (unsigned octaves,
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double frequency,
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double lacunarity,
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basis::seed_t seed);
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fbm ();
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B basis;
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virtual double eval (double x, double y) const;
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};
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template <typename B>
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struct musgrave : public fractal {
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musgrave (unsigned octaves,
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double frequency,
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double lacunarity,
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basis::seed_t seed);
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musgrave ();
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B basis;
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virtual double eval (double x, double y) const;
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};
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}
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}
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#endif
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