dotSCAD/docs/lib3x-nz_worley2.md

nz_worley2

Returns the 2D 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]) 
        for(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[0], c[1]]]);
for(p = cells_pts) {
    translate(p)
    linear_extrude(max_dist)
        square(1);
}