desc.geometry.FourierRZToroidalSurface.compute_curvature

FourierRZToroidalSurface.compute_curvature(R_lmn=None, Z_lmn=None, grid=None)

Compute gaussian and mean curvature.

Parameters:

• R_lmn (array-like) – fourier coefficients for R, Z. Defaults to self.R_lmn, self.Z_lmn

• Z_lmn (array-like) – fourier coefficients for R, Z. Defaults to self.R_lmn, self.Z_lmn

• grid (Grid or array-like) – toroidal coordinates to compute at. Defaults to self.grid If an integer, assumes that many linearly spaced points in (0,2pi)

Returns:

K, H, k1, k2 (ndarray, shape(k,)) – Gaussian, mean and 2 principle curvatures at points specified in grid.