libcruft-util/noise/fractal/hmf.hpp

60 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_FRACTAL_HMF_HPP
#define __UTIL_NOISE_FRACTAL_HMF_HPP
#include <cstdint>
#include "../../point.hpp"
namespace util { namespace noise { namespace fractal {
///////////////////////////////////////////////////////////////////////
/// Musgrave's "Hybrid MultiFractal"
template <typename T, typename B>
struct hmf {
using seed_t = uint64_t;
hmf ();
seed_t seed;
T H;
unsigned octaves;
T frequency;
T lacunarity;
T offset;
T amplitude;
T gain;
B basis;
constexpr T operator() (point<2,T>) const;
private:
T invAH;
T invGH;
};
} } }
#include "hmf.ipp"
#endif