[vtkusers] Re: vtkCollisionDetectionFilter , help

Goodwin Lawlor goodwin.lawlor at ucd.ie
Mon Jan 28 20:41:21 EST 2008


Samuel Marcos wrote:
> Hi,
> 
> Just to keep this post hot.
> Goodwin, did you receive the code correctly? If there's any problem 
> please let me know.
> Sorry for disturbing you.
> Many thanks.

OK - I tracked this one down.

The false positives were for a case of coplanar triangles, with parallel 
  edges, whose bounds also overlapped... rare but your synthetic data 
had two of them.

You could debate it's a bug in vtkLine, but change "> 0" to "== 2" on 
line 680 of vtkCollisionDetectionFilter and you'll fill fix it.

I committed the fix to CVS on sourceforge...

Thanks for the bug report!

Goodwin




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