CGAL users discussion list

[Dongming Yan <>]

Dear CGAL developers,

 

I encounter a problem when I compute the intersection of two triangles who share a common vertex. Here is the debug information:

 

CGAL error: precondition violation!

_expression_ : ! s1.is_degenerate() && ! s1.is_degenerate()

File: cgal-4.0\include\CGAL\Intersections_3/intersection_3_1_impl.h

Line: 262

 

I attached two test examples which cause the problem. Any idea how to fix the problem? Thanks in advance.

--

Best regards

 

Dongming

v 0.38936597839571718 0.00000000000000000  0.13902335142659186 
v 0.37065910744195568 0.00000000000000000  0.15246098325817031 
v 0.37065910744195568 0.00000000000000000  0.13902335142659186 
v 0.38936597839571718 0.041961901334483923 0.13902335142659186 
v 0.37065910744195568 0.00000000000000000  0.13902335142659186 
v 0.37065910744195568 0.041961901334483923 0.13902335142659186 
f 1 2 3 
f 4 5 6

v 0.26448150369921208 0.17441664676680502 0.32074379796987779 
v 0.26404938741258871 0.17466158623599043 0.31693551700080819 
v 0.26458455154921023 0.17478233675466809 0.31507799804829206 
v 0.26399420733846041 0.18625865103442443 0.31962423555702479 
v 0.26448150369921208 0.17441664676680502 0.32074379796987779 
v 0.26446147370767814 0.18613842604026229 0.32150001273270828 
f 1 2 3
f 4 5 6