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import bpy | |
import numpy as np | |
nx, ny, nz = 21, 21, 21 | |
x0, y0, z0 = 10, 10, 10 | |
r1, r2 = 6.0, 7.4 | |
scale = 0.5 | |
x, y, z = np.arange(nx), np.arange(ny), np.arange(nz) | |
rsq = (x[None, None, :]-x0)**2 + (y[None, :, None]-y0)**2 + (z[:, None, None]-z0)**2 | |
sphere_1 = rsq < r1**2 | |
sphere_2 = rsq < r2**2 | |
shell = sphere_2 * (-sphere_1) # I love python! | |
X, Y, Z = np.meshgrid(x, y, z) | |
ipoints = zip( | |
X.flatten(), | |
Y.flatten(), | |
Z.flatten() | |
) | |
points = zip( | |
scale*(X.flatten()-x0), | |
scale*(Y.flatten()-y0), | |
scale*(Z.flatten()-z0) | |
) | |
points = [i for i in points] | |
ipoints = [i for i in ipoints] | |
points_shell = [thing for i, thing in enumerate(points) if shell[ipoints[i]]] | |
def create_repr_plane(obj_name, mesh_name): | |
s = scale/2 | |
verts = [] | |
v_add = verts.extend | |
faces = [] | |
f_add = faces.extend | |
def get_verts(x, y, z): | |
return [ | |
(s+x, s+y, z-s), | |
(s+x, -s+y, z-s), | |
(-s+x, -s+y, z-s), | |
(-s+x, s+y, z-s), | |
(s+x, s+y, z+s), | |
(s+x, -s+y, z+s), | |
(-s+x, -s+y, z+s), | |
(-s+x, s+y, z+s) | |
] | |
def get_faces(o): | |
return [ | |
(0+o, 1+o, 2+o, 3+o), | |
(4+o, 7+o, 6+o, 5+o), | |
(0+o, 4+o, 5+o, 1+o), | |
(1+o, 5+o, 6+o, 2+o), | |
(2+o, 6+o, 7+o, 3+o), | |
(4+o, 0+o, 3+o, 7+o) | |
] | |
# for each surface point | |
total_idx = 0 | |
for point in points_shell: | |
v_add(get_verts(*point)) | |
f_add(get_faces(total_idx)) | |
total_idx += 8 | |
profile_mesh = bpy.data.meshes.new(obj_name) | |
profile_mesh.from_pydata(verts, [], faces) | |
profile_mesh.update() | |
profile_object = bpy.data.objects.new(obj_name, profile_mesh) | |
bpy.context.scene.objects.link(profile_object) | |
return profile_object | |
obj = create_repr_plane("dupli_object", "dupli_mesh") |
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