libcruft-util/noise/basis/perlin.hpp

46 lines
1.3 KiB
C++

/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright 2012-2015 Danny Robson <danny@nerdcruft.net>
*/
#ifndef __UTIL_NOISE_BASIS_PERLIN_HPP
#define __UTIL_NOISE_BASIS_PERLIN_HPP
#include "../basis.hpp"
#include "../../point.hpp"
#include "../../range.hpp"
namespace util { namespace noise { namespace basis {
/// Perlin: interpolated value across each grid space
template <typename T, lerp_t<T> L>
struct perlin {
perlin (seed_t);
range<T> bounds (void) const;
constexpr T operator() (point<2,T>) const;
constexpr seed_t seed (void) const;
seed_t seed (seed_t);
private:
constexpr vector<2,T> gradient (point<2,intmax_t>) const;
seed_t m_seed;
};
} } }
#include "perlin.ipp"
#endif