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[Stzpz <>]

I am sorry, but could you try it one more time for the first test data? I have tried to rebuild the CGAL library, but the assertion violation problem still existed. I have also tried to run it under Windows 7 64bit with VS2008 SP1 and Ubuntu 10.04 64bit, and the problem occurred on both machine.

The assertion information is listed below:

    CGAL error: assertion violation!

    _expression_ : s_vals.size() == t_vals.size()

    File       : D:\CGAL-3.7\include\CGAL/Arr_geometry_traits/Bezier_cache.h

    Line       : 418

    Explanation:

    Refer to the bug-reporting instructions at http://www.cgal.org/bug_report.html

The attachment is the code and the test data. The necessary solution file and make file for VS2008 and Ubuntu are generated using cgal_create_cmake_script and cmake.

Thanks very much!

Stzpz

2011/3/7 Sebastien Loriot (GeometryFactory) <sloriot.ml@gmail.com>

stzpz wrote:

When I inserting a lot of bezier curves into the bezier arrangement, two
crash problems may occurred. Here is the code for test:

attaching the file directly should avoid bad formatting.

[snip]

(1) Using the above code, with a test_data.txt contains a lot of bezier
curves, the insert() is likely to crash because of assertion violation. It
may sometimes running normally, but it seems that, the more the curves, the
higher probability of being crashed.

I ran it ten times without any errors.

Here is the test data:

==================== test_data.txt BEGIN ========================

(2) Using the above code, with a lot of bezier curves of the same control
points, the requiring memory of the code will increasing rapidly and finally
run out of memory. Here is the test data:

The code in CGAL is able to handle identical curves, but as I already said, for efficiency reason, if you know that you are having such
degenerate cases in your examples, I suggest to pre-process
your input to remove duplicated curves (a simply sort on the degree and comparison of control points should be sufficient).

S.

[snip]

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Attachment: test.rar
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