41 lines
No EOL
1.2 KiB
HLSL
41 lines
No EOL
1.2 KiB
HLSL
#include "../math/const.hlsl"
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#include "rotate.hlsl"
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#include "sqTile.hlsl"
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/*
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contributors: Patricio Gonzalez Vivo
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description: 'Rotate tiles (in a squared grid pattern) by 45 degrees'
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use:
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- <float4> windmillTile(<float4> tiles[, <float> fullturn = TAU])
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- <float2> windmillTile(<float2> st [, <float|float2> scale])
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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_WINDMILLTILE
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#define FNC_WINDMILLTILE
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float4 windmillTile(float4 tile, float turn) {
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float a = ( abs(mod(tile.z, 2.0)-
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mod(tile.w, 2.0))+
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mod(tile.w, 2.0) * 2.0)*
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0.25;
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return float4(rotate(tile.xy, a * turn), tile.zw);
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}
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float4 windmillTile(float4 tile) {
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return windmillTile(tile, TAU);
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}
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float4 windmillTile(float2 st) {
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return windmillTile(sqTile(st));
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}
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float4 windmillTile(float2 st, float scale) {
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return windmillTile(st * scale);
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}
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float4 windmillTile(float2 st, float2 scale) {
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return windmillTile(st * scale);
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}
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#endif |