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refactor: start from unit sphere

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Justin Lin
2022-03-28 17:11:52 +08:00
parent 1c893c3fc7
commit af87c89ecc
1 changed files with 8 additions and 8 deletions
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16
src/experimental/worley_sphere.scad
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@@ -2,22 +2,22 @@ use <util/rand.scad>;
use <noise/nz_worley3s.scad>; use <noise/nz_worley3s.scad>;
use <polyhedra/geom_icosahedron.scad>; use <polyhedra/geom_icosahedron.scad>;
// radius = 30; radius = 30;
// detail = 10; detail = 10;
// amplitude = .05; amplitude = .05;
// dist = "border"; // [euclidean, manhattan, chebyshev, border] dist = "border"; // [euclidean, manhattan, chebyshev, border]
// worley_sphere(radius, detail, amplitude, dist); worley_sphere(radius, detail, amplitude, dist);
module worley_sphere(radius, detail, amplitude, dist = "border", grid_w = undef, seed = undef) { module worley_sphere(radius, detail, amplitude, dist = "border", grid_w = undef, seed = undef) {
gw = is_undef(grid_w) ? radius : grid_w; gw = is_undef(grid_w) ? radius : grid_w;
points_faces = geom_icosahedron(radius, detail); points_faces = geom_icosahedron(1, detail);
points = points_faces[0]; points = points_faces[0];
faces = points_faces[1]; faces = points_faces[1];
sd = is_undef(seed) ? rand() * 1000: seed; sd = is_undef(seed) ? rand() * 1000: seed;
noisy = nz_worley3s(points, sd, gw, dist); noisy = nz_worley3s(points * radius, sd, gw, dist);
noisy_points = [ noisy_points = [
for(i = [0:len(points) - 1]) for(i = [0:len(points) - 1])
@@ -25,7 +25,7 @@ module worley_sphere(radius, detail, amplitude, dist = "border", grid_w = undef,
p = points[i], p = points[i],
nz = noisy[i][3] nz = noisy[i][3]
) )
p / norm(p) * (radius + nz * amplitude) p * (radius + nz * amplitude)
]; ];
polyhedron(noisy_points, faces); polyhedron(noisy_points, faces);