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Re: [cgal-discuss] Assertion in arrangement_2


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  • From: "Jens Egeblad" <>
  • To:
  • Subject: Re: [cgal-discuss] Assertion in arrangement_2
  • Date: Wed, 28 Feb 2007 14:24:28 +0100
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Hi again

I hope someone can help me out here... Anyway I did a little bit more
research and these are the x/y-values of cv.left(), cv.right() and p.

cv.left(): -4.241547e+01, 9.937383e-01,
cv.right(): -4.241547e+01, 3.496869e+00,
p: -4.241547e+01, 2.289501e+00

Looks like it is a vertical edge, which seems a bit odd... Can anyone help?

- Jens

On 2/28/07,


<>
wrote:
Hi

I get an assertion when I try to build an arrangement with a lot of lines:

CGAL error: precondition violation!
Expr: Segment_assertions::_assert_is_point_on (p, cv, Has_exact_division()) &&
compare_xy(cv.left(), p) == SMALLER && compare_xy(cv.right(), p) == LARGER
File: /Users/jegeblad/CGAL_Install/include/CGAL/Arr_segment_traits_2.h
Line: 730
Abort trap


Does anyone know what could cause this problem? Could it be a floating-point
problem?

Best - Jens

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