mirror of
https://github.com/JustinSDK/dotSCAD.git
synced 2025-01-17 14:18:13 +01:00
52 lines
1.5 KiB
Markdown
52 lines
1.5 KiB
Markdown
# nz_worley2
|
|
|
|
Returns the 2D [Worley noise](https://en.wikipedia.org/wiki/Worley_noise) value `[cell_x, cell_y, noise]` at the (x, y) coordinate.
|
|
|
|
It divides the space into grids. The nucleus of each cell is randomly placed in a grid.
|
|
|
|
|
|
|
|
**Since:** 2.3
|
|
|
|
## Parameters
|
|
|
|
- `x` : The x coordinate.
|
|
- `y` : The y coordinate.
|
|
- `seed` : The random seed.
|
|
- `grid_w` : The grid width. Default to 10. Smaller `grid_w` makes more cells.
|
|
- `dist` : The noise value of each point is based on its distance to other cells. Different distance strategies make different noises. The `dist` parameter accepts `"euclidean"`, `"manhattan"`, `"chebyshev"` or `"border"`.
|
|
|
|
## Examples
|
|
|
|
use <noise/nz_worley2.scad>
|
|
use <util/dedup.scad>
|
|
|
|
size = [100, 50];
|
|
grid_w = 10;
|
|
dist = "euclidean"; // [euclidean, manhattan, chebyshev, border]
|
|
seed = 51;
|
|
|
|
points = [
|
|
for(y = [0:size.y - 1], x = [0:size.x - 1])
|
|
[x, y]
|
|
];
|
|
|
|
cells = [for(p = points) nz_worley2(p.x, p.y, seed, grid_w, dist)];
|
|
|
|
max_dist = max([for(c = cells) c[2]]);
|
|
for(i = [0:len(cells) - 1]) {
|
|
c = cells[i][2] / max_dist;
|
|
color([c, c, c])
|
|
linear_extrude(cells[i][2])
|
|
translate(points[i])
|
|
square(1);
|
|
}
|
|
|
|
cells_pts = dedup([for(c = cells) [c.x, c.y]]);
|
|
for(p = cells_pts) {
|
|
translate(p)
|
|
linear_extrude(max_dist)
|
|
square(1);
|
|
}
|
|
|
|
 |