Calculate shape indices from the maximum and minimum principal curvatures.
From Koenderink, J.J. and Van Doorn, A.J., 1992.
[KvD92]
- Parameters:
MaxPrincipal (list, float) – Single value or list of maximum principal curvatures.
MinPrincipal (list, float) – Single value or list of principal curvatures.
- Returns:
shape – Single value or list of shape indices.
- Return type:
list, float
