shapes.sphere

shapes.sphere(radius=1.0, center=(0.0, 0.0, 0.0), long_div=36, lat_div=18)

Create a triangular mesh approximating a sphere.

Parameters

radiusfloat, optional

Radius of the sphere. Must be > 0. Default is 1.0.

centerarray_like of shape (3,), optional

Coordinates of the sphere center. Default is (0.0, 0.0, 0.0).

long_divint, optional

Number of subdivisions along the longitudinal direction (around the sphere’s vertical axis). Must be >= 3. Default is 36.

lat_divint, optional

Number of subdivisions along the latitudinal direction (from pole to pole). Must be >= 2. Default is 18.

Returns

Mesh

A triangular surface mesh representing the sphere (eltype='tri3').

Examples

>>> S = sphere(radius=2.0, long_div=24, lat_div=12)
>>> print(S)
Mesh: n_nodes: 266, n_elems: 528, plexitude: 3, level: 2, eltype: tri3
  BBox: [-2. -2. -2.], [2. 2. 2.]
  Size: [4. 4. 4.]
  Length: 0.0  Area: 49.55
>>> np.isclose(S.enclosed_volume(), 32.564, rtol=1e-3, atol=1e-6)
True