66 lines
1.8 KiB
C++
66 lines
1.8 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 Danny Robson <danny@nerdcruft.net>
|
|
*/
|
|
|
|
#ifndef __UTIL_NOISE_FRACTAL_HPP
|
|
#define __UTIL_NOISE_FRACTAL_HPP
|
|
|
|
#include "basis.hpp"
|
|
|
|
namespace util {
|
|
namespace noise {
|
|
struct fractal {
|
|
fractal (unsigned octaves,
|
|
double frequency,
|
|
double lacunarity);
|
|
fractal ();
|
|
virtual ~fractal ();
|
|
|
|
unsigned octaves;
|
|
double frequency;
|
|
double lacunarity;
|
|
|
|
virtual double eval (double x, double y) const = 0;
|
|
};
|
|
|
|
|
|
template <typename B>
|
|
struct fbm : public fractal {
|
|
fbm (unsigned octaves,
|
|
double frequency,
|
|
double lacunarity,
|
|
basis::seed_t seed);
|
|
fbm ();
|
|
|
|
B basis;
|
|
virtual double eval (double x, double y) const;
|
|
};
|
|
|
|
template <typename B>
|
|
struct musgrave : public fractal {
|
|
musgrave (unsigned octaves,
|
|
double frequency,
|
|
double lacunarity,
|
|
basis::seed_t seed);
|
|
musgrave ();
|
|
|
|
B basis;
|
|
virtual double eval (double x, double y) const;
|
|
};
|
|
}
|
|
}
|
|
|
|
#endif
|