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rezof/gist:7f881c9035d52cd272e5b340664dcec1

Last active June 12, 2022 10:50
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glsl helper functions
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gistfile1.txt
float drawPolygon(const vec2 polygonCenter, const int N, const float radius, vec2 pos) {
pos = pos - polygonCenter;
float d = 0.0;
float a = atan(pos.x, pos.y);
float r = TWO_PI / float(N);
d = cos(floor(0.5 + a / r)*r - a)*length(pos);
return (1.0 - smoothstep(radius, radius + radius/10.0, d));
}
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