100 lines
2.7 KiB
Plaintext
100 lines
2.7 KiB
Plaintext
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/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Copyright 2015 Danny Robson <danny@nerdcruft.net>
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*/
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#ifdef __UTIL_NOISE_FRACTAL_BASE_IPP
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#error
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#endif
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#define __UTIL_NOISE_FRACTAL_BASE_IPP
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#include <cmath>
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namespace util { namespace noise { namespace fractal {
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///////////////////////////////////////////////////////////////////////////
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template <typename T, typename B>
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base<T,B>::base (seed_t _seed,
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unsigned _octaves,
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T _H,
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T _frequency,
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T _lacunarity,
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T _amplitude,
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T _gain):
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// literals
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m_octaves (_octaves),
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m_H (_H),
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m_frequency (_frequency),
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m_lacunarity (_lacunarity),
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m_amplitude (_amplitude),
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m_gain (_gain),
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// compound
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m_basis (_seed),
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// calculated
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m_invAH (std::pow (_amplitude, -_H)),
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m_invGH (std::pow (_gain, _H))
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{
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CHECK_NEQ (m_octaves, 0);
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CHECK_NEQ (m_frequency, 0);
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CHECK_NEQ (m_amplitude, 0);
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}
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///////////////////////////////////////////////////////////////////////////
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template <typename T, typename B>
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unsigned
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base<T,B>::octaves (unsigned _octaves)
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{
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return m_octaves = _octaves;
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}
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//-------------------------------------------------------------------------
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template <typename T, typename B>
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T
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base<T,B>::H (T _h)
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{
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m_H = _h;
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m_invAH = std::pow (m_amplitude, -m_H);
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m_invGH = std::pow (m_gain, m_H);
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return H;
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}
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//-------------------------------------------------------------------------
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template <typename T, typename B>
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T
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base<T,B>::frequency (T _frequency)
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{
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return m_frequency = _frequency;
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}
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//-------------------------------------------------------------------------
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template <typename T, typename B>
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T
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base<T,B>::lacunarity (T _lacunarity)
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{
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return m_lacunarity = _lacunarity;
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}
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//-------------------------------------------------------------------------
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//template <typename T, typename B>
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//typename base<T,B>::seed_t
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//base<T,B>::seed (seed_t _seed)
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//{
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// return basis.seed (_seed);
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//}
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} } }
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