H2Lib
3.0

Representation of a trial space with lowest order RaviartThomas basis functions on a threedimensional tetrahedral mesh. More...
#include <tet3drt0.h>
Data Fields  
pctet3d  t3 
Triangular mesh, represented by tet3d object.  
uint  ndof 
Number of degrees of freedom.  
uint  nfix 
Number of fixed faces.  
uint *  is_dof 
Determines whether an face is a degree or freedom or fixed. More...  
uint *  idx2dof 
Consecutive indices for all degrees of freedom and all fixed faces.  
Representation of a trial space with lowest order RaviartThomas basis functions on a threedimensional tetrahedral mesh.
Since the mesh itself is represented by a tet3d object, we only have to keep track of which edges are degrees of freedom and provide them with consecutive indices for the algebraic functions.
The remaining edges are also provided with consecutive indices, allowing us to construct interaction matrices that describe how nonzero values in the fixed edges influence the righthand side of a variational equation. This mechanism is useful, e.g., for handling inhomogeneous Dirichlet boundary conditions.
uint* is_dof 
Determines whether an face is a degree or freedom or fixed.
After the call of new_tet3drt0 : 0 inner face, 1 boundary face. Use 1 Dirichlet face and 2 Neumann face for mixed boundary conditions