lygia/sdf/hexSDF)Returns a hexagon-shaped SDF
Use:
hexSDF(<vec2> st)
#ifndef FNC_HEXSDF
#define FNC_HEXSDF
float hexSDF(in vec2 st) {
#ifdef CENTER_2D
st -= CENTER_2D;
st *= 2.0;
#else
st = st * 2.0 - 1.0;
#endif
st = abs(st);
return max(abs(st.y), st.x * .866025 + st.y * .5);
}
#endif
Use:
hexSDF(<float2> st)
#ifndef FNC_HEXSDF
#define FNC_HEXSDF
float hexSDF(in float2 st) {
#ifdef CENTER_2D
st -= CENTER_2D;
st *= 2.0;
#else
st = st * 2.0 - 1.0;
#endif
st = abs(st);
return max(abs(st.y), st.x * .866025 + st.y * .5);
}
#endif
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