52 lines
No EOL
1.3 KiB
Text
52 lines
No EOL
1.3 KiB
Text
#include "random.msl"
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/*
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contributors: Patricio Gonzalez Vivo
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description: Worley noise
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use: <float2> worley(<float2|float3> pos)
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examples:
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- /shaders/generative_worley.frag
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license:
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- Copyright (c) 2021 Patricio Gonzalez Vivo under Prosperity License - https://prosperitylicense.com/versions/3.0.0
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- Copyright (c) 2021 Patricio Gonzalez Vivo under Patron License - https://lygia.xyz/license
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*/
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#ifndef FNC_WORLEY
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#define FNC_WORLEY
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float worley(float2 p){
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float2 n = floor( p );
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float2 f = fract( p );
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float dis = 1.0;
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for( int j= -1; j <= 1; j++ )
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for( int i=-1; i <= 1; i++ ) {
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float2 g = float2(i,j);
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float2 o = random2( n + g );
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float2 delta = g + o - f;
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float d = length(delta);
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dis = min(dis,d);
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}
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return 1.0-dis;
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}
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float worley(float3 p) {
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float3 n = floor( p );
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float3 f = fract( p );
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float dis = 1.0;
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for( int k = -1; k <= 1; k++ )
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for( int j= -1; j <= 1; j++ )
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for( int i=-1; i <= 1; i++ ) {
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float3 g = float3(i,j,k);
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float3 o = random3( n + g );
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float3 delta = g+o-f;
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float d = length(delta);
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dis = min(dis,d);
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}
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return 1.0-dis;
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}
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#endif |