* Converts Gamma2 elements to Gamma3 elements for a degree N directional field. * Input: * - sFE: |F| x 6 matrix containing face to edge connectiv

* Converts Gamma3 elements to Gamma2 elements for a degree N directional field. * Input: * - sFE: |F| x 6 matrix containing face to edge connectiv

Returns a copy of `*this` with updated offset.

\returns the number of columns grouped by blocks */

* \returns the starting position of the block \p id in the array of values */

Converts a field in PolyVector representation to raw represenation. Inputs: B1, B2: #F by 3 matrices representing the local base of each fac

Only used after having checked for consistency!