LYGIA Shader Library

flowerSDF (lygia/sdf/flowerSDF)

Returns a flower shaped SDF

Use:

flowerSDF(<vec2> st, <int> n_sides)

Check it on Github


#ifndef FNC_FLOWERSDF
#define FNC_FLOWERSDF
float flowerSDF(vec2 st, int N) {
#ifdef CENTER_2D
    st -= CENTER_2D;
#else
    st -= 0.5;
#endif
    st *= 4.0;
    float r = length(st) * 2.0;
    float a = atan(st.y, st.x);
    float v = float(N) * 0.5;
    return 1.0 - (abs(cos(a * v)) *  0.5 + 0.5) / r;
}
#endif

Use:

flowerSDF(<float2> st, <int> n_sides)

Check it on Github


#ifndef FNC_FLOWERSDF
#define FNC_FLOWERSDF
float flowerSDF(vec2 st, int N) {
#ifdef CENTER_2D
    st -= CENTER_2D;
#else
    st -= 0.5;
#endif
    st *= 4.0;
    float r = length(st) * 2.0;
    float a = atan2(st.y, st.x);
    float v = float(N) * 0.5;
    return 1.0 - (abs(cos(a * v)) *  0.5 + 0.5) / r;
}
#endif

Examples

Licenses

LYGIA is dual-licensed under the Prosperity License and the Patron License for sponsors and contributors.

Sponsors and contributors are automatically added to the Patron License and they can ignore the any non-commercial rule of the Prosperity Licensed software (please take a look to the exception).

It's also possible to get a permanent comercial license hook to a single and specific version of LYGIA.

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