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0b2d4d4879
Recommendation is to avoid using the year nomenclature as this information is already encoded in the git repo. Avoids needing to repeatly update. Also updates AUTHORS.txt from current repo with contributor names
83 lines
2.7 KiB
C++
83 lines
2.7 KiB
C++
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2016 Mario Luzeiro <mrluzeiro@ua.pt>
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* Copyright The KiCad Developers, see AUTHORS.txt for contributors.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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/**
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* @file PerlinNoise.h
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* @brief This source code comes from the project:
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* https://github.com/sol-prog/Perlin_Noise
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*
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* It was changed to work with floats instead of doubles
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*
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* Original copyright notice:
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*
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* Perlin_Noise
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* "Here you could find the code for "Perlin noise in C++11",
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* for more information visit the project webpage:
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* http://solarianprogrammer.com/2012/07/18/perlin-noise-cpp-11/
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* You could use this program under the terms of GPL v3, for more details see:
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* http://www.gnu.org/copyleft/gpl.html
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* Copyright 2012 Sol from www.solarianprogrammer.com"
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*/
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#include <vector>
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// THIS CLASS IS A TRANSLATION TO C++11 FROM THE REFERENCE
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// JAVA IMPLEMENTATION OF THE IMPROVED PERLIN FUNCTION (see http://mrl.nyu.edu/~perlin/noise/)
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// THE ORIGINAL JAVA IMPLEMENTATION IS COPYRIGHT 2002 KEN PERLIN
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// I ADDED AN EXTRA METHOD THAT GENERATES A NEW PERMUTATION VECTOR
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// (THIS IS NOT PRESENT IN THE ORIGINAL IMPLEMENTATION)
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#ifndef PERLINNOISE_H
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#define PERLINNOISE_H
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class PerlinNoise
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{
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public:
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/**
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* Initialize with the reference values for the permutation vector.
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*/
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PerlinNoise();
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/**
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* Generate a new permutation vector based on the value of seed.
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*/
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PerlinNoise( unsigned int seed );
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// Returns between 0.0f and 1.0f
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float noise( float x, float y, float z ) const;
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float noise( float x, float y ) const;
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private:
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float fade( float t ) const;
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float lerp( float t, float a, float b ) const;
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float grad( int hash, float x, float y, float z ) const;
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float grad( int hash, float x, float y ) const;
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// The permutation vector
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std::vector<int> p;
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};
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#endif
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