83 lines
2.7 KiB
C++
83 lines
2.7 KiB
C++
/*
|
|
* This program source code file is part of KiCad, a free EDA CAD application.
|
|
*
|
|
* Copyright (C) 2016 Mario Luzeiro <mrluzeiro@ua.pt>
|
|
* Copyright (C) 2016-2020 KiCad Developers, see AUTHORS.txt for contributors.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, you may find one here:
|
|
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
|
|
* or you may search the http://www.gnu.org website for the version 2 license,
|
|
* or you may write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
|
|
*/
|
|
|
|
/**
|
|
* @file PerlinNoise.h
|
|
* @brief This source code comes from the project:
|
|
* https://github.com/sol-prog/Perlin_Noise
|
|
*
|
|
* It was changed to work with floats instead of doubles
|
|
*
|
|
* Original copyright notice:
|
|
*
|
|
* Perlin_Noise
|
|
* "Here you could find the code for "Perlin noise in C++11",
|
|
* for more information visit the project webpage:
|
|
* http://solarianprogrammer.com/2012/07/18/perlin-noise-cpp-11/
|
|
* You could use this program under the terms of GPL v3, for more details see:
|
|
* http://www.gnu.org/copyleft/gpl.html
|
|
* Copyright 2012 Sol from www.solarianprogrammer.com"
|
|
*/
|
|
|
|
#include <vector>
|
|
|
|
// THIS CLASS IS A TRANSLATION TO C++11 FROM THE REFERENCE
|
|
// JAVA IMPLEMENTATION OF THE IMPROVED PERLIN FUNCTION (see http://mrl.nyu.edu/~perlin/noise/)
|
|
// THE ORIGINAL JAVA IMPLEMENTATION IS COPYRIGHT 2002 KEN PERLIN
|
|
|
|
// I ADDED AN EXTRA METHOD THAT GENERATES A NEW PERMUTATION VECTOR
|
|
// (THIS IS NOT PRESENT IN THE ORIGINAL IMPLEMENTATION)
|
|
|
|
#ifndef PERLINNOISE_H
|
|
#define PERLINNOISE_H
|
|
|
|
class PerlinNoise
|
|
{
|
|
public:
|
|
/**
|
|
* Initialize with the reference values for the permutation vector.
|
|
*/
|
|
PerlinNoise();
|
|
|
|
/**
|
|
* Generate a new permutation vector based on the value of seed.
|
|
*/
|
|
PerlinNoise( unsigned int seed );
|
|
|
|
// Returns between 0.0f and 1.0f
|
|
float noise( float x, float y, float z ) const;
|
|
float noise( float x, float y ) const;
|
|
|
|
private:
|
|
float fade( float t ) const;
|
|
float lerp( float t, float a, float b ) const;
|
|
float grad( int hash, float x, float y, float z ) const;
|
|
float grad( int hash, float x, float y ) const;
|
|
|
|
// The permutation vector
|
|
std::vector<int> p;
|
|
};
|
|
|
|
#endif
|