19 lines
801 B
HLSL
19 lines
801 B
HLSL
/*
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contributors: Patricio Gonzalez Vivo
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description: "Fix the aspect ratio of a space keeping things squared for you, \nin\
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\ a similar way that aspect.hlsl does, but while scaling the \nspace to keep the\
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\ entire 0.0,0.0 ~ 1.0,1.0 range visible\n"
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use: <float2> ratio(<float2> st, <float2> st_size)
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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_RATIO
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#define FNC_RATIO
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float2 ratio(in float2 st, in float2 s) {
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return lerp( float2((st.x*s.x/s.y)-(s.x*.5-s.y*.5)/s.y,st.y),
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float2(st.x,st.y*(s.y/s.x)-(s.y*.5-s.x*.5)/s.x),
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step(s.x, s.y));
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}
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#endif
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