27 lines
830 B
HLSL
27 lines
830 B
HLSL
#include "../math/rotate4dZ.hlsl"
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/*
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contributors: Patricio Gonzalez Vivo
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description: rotate a 2D space by a radian angle
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use: rotateZ(<float3|float4> pos, float radian [, float3 center])
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options:
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- CENTER_3D
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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_ROTATEZ
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#define FNC_ROTATEZ
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float3 rotateZ(in float3 pos, in float radian, in float3 center) {
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return mul(rotate4dZ(radian), float4(pos - center, 0.) ).xyz + center;
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}
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float3 rotateZ(in float3 pos, in float radian) {
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#ifdef CENTER_3D
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return rotateZ(pos, radian, CENTER_3D);
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#else
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return rotateZ(pos, radian, float3(0.0, 0.0, 0.0));
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#endif
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}
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#endif
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