CGAL users discussion list

["J.L.M." <>]

I need to pull in a .off file that I created with Blender. Section 27.6 
of the CGAL manual states:

"The most important advantage of the filtered kernel is that it is a 
Cartesian kernel, which allows the proper handling of OFF files using 
floating-point coordinates."

I have compiled the example program handling_double_coordinates.cpp, and 
when I run it like so:

cat cube.off | ./handling_double_coordinates

I get an assertion:

terminate called after throwing an instance of 'CGAL::Assertion_exception'
  what():  CGAL ERROR: assertion violation!
Expr: pe_prev->is_border() || pe_prev->facet()->plane().has_on(pv.point())
File: 
/home/jlm/school/masters_thesis/code/CGAL-3.6/include/CGAL/Nef_3/polyhedron_3_to_nef_3.h
Line: 224
Aborted

The cube.off file is attached. Please note that the first coordinate is 
1.000001. If I change this to 1.000000, then there is no assertion. It 
seems to me that this doesn't actually handle double coordinates. Is 
this a bug in CGAL? Is there a way to work around it?

Thanks for any help you can provide.

cube.off below:
OFF
8 6 0
1.000001 1.000000 -1.000000
1.000000 -1.000000 -1.000000
-1.000000 -1.000000 -1.000000
-1.000000 1.000000 -1.000000
1.000000 1.000000 1.000000
1.000000 -1.000000 1.000000
-1.000000 -1.000000 1.000000
-1.000000 1.000000 1.000000
4 3 2 1 0
4 5 6 7 4
4 1 5 4 0
4 2 6 5 1
4 3 7 6 2
4 7 3 0 4