mirror of https://github.com/bjornbytes/lovr.git
32 lines
1.1 KiB
C
32 lines
1.1 KiB
C
/* SimplexNoise1234, Simplex noise with true analytic
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* derivative in 1D to 4D.
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*
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* Author: Stefan Gustavson, 2003-2005
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* Contact: stegu@itn.liu.se
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*
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* This code was GPL licensed until February 2011.
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* As the original author of this code, I hereby
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* release it into the public domain.
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* Please feel free to use it for whatever you want.
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* Credit is appreciated where appropriate, and I also
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* appreciate being told where this code finds any use,
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* but you may do as you like.
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*/
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/*
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* This is a clean, fast, modern and free Perlin Simplex noise function.
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* It is a stand-alone compilation unit with no external dependencies,
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* highly reusable without source code modifications.
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*
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* Note:
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* Replacing the "float" type with "double" can actually make this run faster
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* on some platforms. Having both versions could be useful.
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*/
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/** 1D, 2D, 3D and 4D float Perlin simplex noise
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*/
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double snoise1( double x );
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double snoise2( double x, double y );
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double snoise3( double x, double y, double z );
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double snoise4( double x, double y, double z, double w );
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