def test_rotation_form():
profile = [(0, 0.1), (1, 1), (3, 1.5), (5, 3)] # in xy-plane
mesh = rotation_form(count=16, profile=profile,
axis=(1, 0, 0)) # rotation axis is the x-axis
assert len(mesh.vertices) == 16 * 4
assert len(mesh.faces) == 16 * 3
def build_rotation_form(filename, alpha=2 * math.pi, sides=16):
profile = forms.spline_interpolation([(0, 0.1), (1, 1), (3, 1.5), (5, 3)],
subdivide=8) # in xy-plane
mesh = forms.rotation_form(sides, profile, angle=alpha, axis=(1, 0, 0))
write_mesh(filename, mesh)
