23 lines
732 B
GLSL
23 lines
732 B
GLSL
#include "rectSDF.glsl"
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/*
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contributors: Patricio Gonzalez Vivo
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description: Returns a cross-shaped SDF
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use: crossSDF(<vec2> st, size s)
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options:
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- CENTER_2D: vec2, defaults to vec2(.5)
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examples:
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- https://raw.githubusercontent.com/patriciogonzalezvivo/lygia_examples/main/draw_shapes.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_CROSSSDF
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#define FNC_CROSSSDF
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float crossSDF(in vec2 st, in float s) {
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vec2 size = vec2(.25, s);
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return min(rectSDF(st.xy, size.xy),
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rectSDF(st.xy, size.yx));
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}
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#endif
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