63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
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/*
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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_BASIS_HPP
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#define __UTIL_NOISE_BASIS_HPP
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#include <cstdlib>
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#include "../lerp.hpp"
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namespace util {
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namespace noise {
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typedef double (*lerp_function)(double, double, double);
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struct basis {
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typedef size_t seed_t;
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basis (seed_t);
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basis ();
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virtual ~basis ();
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seed_t seed;
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virtual double eval (double x, double y) const = 0;
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};
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template <lerp_function L> struct value : public basis {
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value (seed_t);
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value ();
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virtual double eval (double x, double y) const;
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};
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template <lerp_function L> struct gradient : public basis {
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gradient (seed_t);
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gradient ();
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virtual double eval (double x, double y) const;
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};
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struct cellular : public basis {
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cellular (seed_t);
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cellular ();
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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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