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Voronoi algorithm improved

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Digvijaysinh Gohil 2023-10-13 15:49:48 +05:30
parent 17b7bd7f48
commit e2c630daae
1 changed files with 11 additions and 12 deletions
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23
addons/ShaderLib/Procedural/Noise/Voronoi.gdshaderinc
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@ -1,24 +1,23 @@
void voronoi_noise(vec2 uv, float cell_density, float angle_offset, out float output, out float cells){ void voronoi_noise(vec2 uv, float cell_density, float angle_offset, out float output, out float cells){
vec2 g = floor(uv * cell_density); vec2 _g = floor(uv * cell_density);
vec2 f = fract(uv * cell_density); vec2 _f = fract(uv * cell_density);
float t = 8.0; vec3 _res = vec3(8.0, 0.0, 0.0);
vec3 res = vec3(8.0, 0.0, 0.0); mat2 _matrix = mat2(vec2(15.27, 47.63), vec2(99.41, 89.98));
mat2 m = mat2(vec2(15.27, 47.63), vec2(99.41, 89.98));
for(int y=-1; y<=1; y++) for(int y=-1; y<=1; y++)
{ {
for(int x=-1; x<=1; x++) for(int x=-1; x<=1; x++)
{ {
vec2 lattice = vec2(float(x), float(y)); vec2 lattice = vec2(float(x), float(y));
vec2 new_uv = lattice + g; vec2 new_uv = lattice + _g;
new_uv = fract(sin(new_uv * m) * 46839.32); new_uv = fract(sin(new_uv * _matrix) * 46839.32);
vec2 offset = vec2(sin(new_uv.y * angle_offset) * 0.5 + 0.5, cos(new_uv.x * angle_offset) * 0.5 + 0.5); vec2 offset = vec2(sin(new_uv.y * angle_offset) * 0.5 + 0.5, cos(new_uv.x * angle_offset) * 0.5 + 0.5);
float d = distance(lattice + offset, f); float d = distance(lattice + offset, _f);
if(d < res.x) if(d < _res.x)
{ {
res = vec3(d, offset.x, offset.y); _res = vec3(d, offset.x, offset.y);
output = res.x; output = _res.x;
cells = res.y; cells = _res.y;
} }
} }
} }