CGAL users discussion list

[Nicholas Mario Wardhana <>]

On 9 March 2012 06:49, Helmi Ben Hmida
<>
 wrote:
> Hello Again,
> U re right, but, it did not resolve the problem.
> Still empty polyderon !!!
> Do any one know how o fix this please
>
>
> This is the correct off
>
> OFF
> #
> #Oid806_IfcWall_Wand__Mauerziegel_d_17_5_cm__i.OFF
> #
> 24 6 24
> 19.454456 9.214429 9.195417
> 19.454456 9.214429 6
> 19.629456 9.214429 6
> 19.629456 9.214429 9.195417
> 19.629456 9.214429 9.195417
> 19.629456 9.214429 6
> 19.629456 13.049429 6
> 19.629456 13.049429 8.724564
> 19.629456 13.049429 8.724564
> 19.629456 13.049429 6
> 19.454456 13.049429 6
> 19.454456 13.049429 8.724564
> 19.454456 13.049429 8.724564
> 19.454456 13.049429 6
> 19.454456 9.214429 6
> 19.454456 9.214429 9.195417
> 19.454456 9.214429 6
> 19.454456 13.049429 6
> 19.629456 13.049429 6
> 19.629456 9.214429 6
> 19.629456 9.214429 9.195417
> 19.629456 13.049429 8.724564
> 19.454456 13.049429 8.724564
> 19.454456 9.214429 9.195417
> 4 0 1 2 3
> 4 4 5 6 7
> 4 8 9 10 11
> 4 12 13 14 15
> 4 16 17 18 19
> 4 20 21 22 23
>

Hi Helmi,

I am not sure about this, but while I understand that you want to
create a cube with each face being defined as a square (unlike your
previous OFF file, the new one can be successfully loaded to Meshlab,
which means this is a valid OFF file), this causes your file to
contain duplicate vertices. I am wondering if anybody can clarify
whether Polyhedron_3 allows duplicate vertices?

Also, if you receive any error message, it might be helpful to put it here.

Best regards,
Nicholas