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[henrikz <>]

Hello,

I have also come across a peculiarity regarding the infinite_vertex, which I
am hoping you might be able to clear up for me. 

Similar to the other posts, in my case it seems that not all connected
components of a Tetmesh are connected with the infinite vertex.

I create my Tetmesh using the incremental builder (for details see below),
as a simple example I created 2 Tets which are simply translates of
eachother:

 Vertices
 8
 0 0 0 0
 1 0 0 0 
 0 1 0 0 
 0 0 1 0 
 2 0 0 0
 3 0 0 0
 2 1 0 0
 2 0 1 0
 Tetrahedra
 2
 1 2 3 4
 5 6 7 8

now the outputting the number of elements yield the following:

 #vertices: 8
 #edges   : 20 
 #faces   : 20
 #cells   : 10

while the number of vertices seems ok, the rest seems odd!?

Furthermore, outputting the number of /incident_cells/ to the
/infinite_vertex/ yields:

 #cells incident to inf vertex = 4

The "problem" occurred to me when trying to visualize the outer surface
mesh(es) (of a multi-component tetmesh) using incidence with the infinite
vertex...

Can someone please tell me if this is the wanted functionality and/or if I
am simply using the Triangulation/Builder wrong?


Many thanks,
Henrik

The used data structure:
/typedef CGAL::Exact_predicates_inexact_constructions_kernel    TM_K;
typedef TVB_with_index<TM_K>                                   TM_VB;
typedef TCB_with_index<TM_K>                                   TM_CB;
typedef CGAL::Triangulation_data_structure_3< TM_VB, TM_CB>    TM_TDS;
typedef CGAL::Triangulation_3&lt;TM_K, TM_TDS&gt;                   
TetMeshT3;
typedef Triangulation_3_with_indices<TetMeshT3>                TetMeshCGAL;
typedef CGAL::Triangulation_incremental_builder_3<TetMeshCGAL>
TetMeshCGALIncrementalBuilder;/





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