lygia/sdf/heartSDF)Returns a heart shaped SDF
Use:
heartSDF(<vec2> st)
#ifndef FNC_HEARTSDF
#define FNC_HEARTSDF
float heartSDF(vec2 st) {
#ifdef CENTER_2D
st -= CENTER_2D;
#else
st -= 0.5;
#endif
st -= vec2(0.0, 0.3);
float r = length(st) * 5.0;
st = normalize(st);
return r - ((st.y * pow(abs(st.x), 0.67)) / (st.y + 1.5) - (2.0) * st.y + 1.26);
}
#endif
Use:
heartSDF(<float2> st)
#ifndef FNC_HEARTSDF
#define FNC_HEARTSDF
float heartSDF(float2 st) {
#ifdef CENTER_2D
st -= CENTER_2D;
#else
st -= 0.5;
#endif
st -= float2(0.0, 0.3);
float r = length(st) * 5.0;
st = normalize(st);
return r - ((st.y * pow(abs(st.x), 0.67)) / (st.y + 1.5) - (2.0) * st.y + 1.26);
}
#endif
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