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Beppe Vanrolleghem
2024-06-23 20:20:20 +02:00
parent 7d90584625
commit cb8e5f5320
1 changed files with 11 additions and 0 deletions
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11
.vim/UltiSnips/glsl.snippets
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@@ -227,3 +227,14 @@ snippet fn_tile "tiles the screenspace" b
vec2 tile(vec2 st, float tiles) {return fract(st*tiles)-.5; }
endsnippet
snippet fn_star "star sdf function" b
float starSDF(vec2 st, float V, float s) {
st = st*2.;
float a = atan(st.y, st.x)/(2.*3.14159265359);
float seg = a * V;
a = ((floor(seg) + .5)/V + mix(s, -s,step(.5,fract(seg)))) * (2.*3.14159265359);
return abs(dot(vec2(cos(a),sin(a)),st));
}
endsnippet