LYGIA Shader Library

raysSDF (lygia/v1.1.6/sdf/raysSDF)

Returns a sdf for rays with N branches

Dependencies:

Use:

raysSDF(<vec2> st, <int> N)

Check it on Github



#ifndef FNC_RAYSSDF
#define FNC_RAYSSDF
float raysSDF(in vec2 st, in int N) {
#ifdef CENTER_2D
    st -= CENTER_2D;
#else
    st -= 0.5;
#endif
    return fract(atan(st.y, st.x) / TAU * float(N));
}
#endif

Dependencies:

Use:

raysSDF(<float2> st, <int> N)

Check it on Github



#ifndef FNC_RAYSSDF
#define FNC_RAYSSDF
float raysSDF(in vec2 st, in int N) {
#ifdef CENTER_2D
    st -= CENTER_2D;
#else
    st -= 0.5;
#endif
    return frac(atan2(st.y, st.x) / TAU * float(N));
}
#endif

Examples

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