define a grid on a plane.
This data type defines a plane, and a regular grid defined on this plane (or, rather, on a portion of this plane) n should be a unit vector, that determines the normal of the plane. Origin is a point belonging to the plane u and v are unit orthogonal vectors belonging to the plane The grid is generated by the vectors u and v: x_{i,j} = origin + i*spacing*u + j*spacing*v, for nu <= i <= mu and nv <= j <= mv NB: only works for 3D grids
Definition at line 243 of file mesh.F90.