Module jacobian 

Jacobian utilities for isoparametric cells.

Structs

Jacobian2x2

2×2 Jacobian matrix for a bilinear quad with nodes [A,B,C,D] at reference coords (-1,-1), (1,-1), (1,1), (-1,1).

Functions

invert_quad_mapping

Given physical point p and quad corners a,b,c,d, find (xi,eta) via Newton: