50 lines
1.5 KiB
C++
50 lines
1.5 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 2015 Danny Robson <danny@nerdcruft.net>
|
|
*/
|
|
|
|
|
|
#ifndef __UTIL_NOISE_RAND_HASH_HPP
|
|
#define __UTIL_NOISE_RAND_HASH_HPP
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
namespace util { namespace noise { namespace rand {
|
|
struct hash {
|
|
/// generate a uniform random floating point in the range [0, 1] from a seed and vector
|
|
template <
|
|
typename U,
|
|
size_t S,
|
|
typename T,
|
|
template <size_t,typename> class Q
|
|
>
|
|
static U
|
|
scalar (uint64_t seed, Q<S,T> value) noexcept;
|
|
|
|
/// generate a coordinate type with uniform random components in the range [0, 1]
|
|
template <
|
|
template <size_t,typename> class R,
|
|
typename U,
|
|
size_t S,
|
|
typename T,
|
|
template <size_t,typename> class Q
|
|
>
|
|
static R<S,U>
|
|
coord (uint64_t seed, Q<S,T> value) noexcept;
|
|
};
|
|
} } }
|
|
|
|
#include "./hash.hpp"
|
|
|
|
#endif
|