[vtk-developers] Long failing test

[Ken Martin]

Nothing to do with OpenGL2, but TestChartXYZ test fails on various
platforms and it has been bugging me.  It turns out it is failing due to
floating point issues. Basically



1)      By default the plot data points define the bounds of the axes for
the chart

2)      the axes define the plot area (clip stuff outside that)

3)      which defines the clipping plane equations

4)      which can in turn clip the original data points subject to floating
point precision



This is what is happening (FYI, the point that disappears in the middle is
actual on the boundary in the depth axis). So ... I can “fix” the test by
defining axes that are slightly bigger than the data and replacing the
valid image. This is what I am planning to do unless someone hollers. I’m
not sure what the more general fix is.



Thanks

Ken





Someone wrote...



In reply to this post
<http://vtk.1045678.n5.nabble.com/New-OS-X-10-10-dashboards-tp5729207.html>
by Sean McBride



I suspect a real VTK bug behind this test failure. I get *exactly* the
same test image on my Windows / Visual Studio 2012 dashboards:

http://open.cdash.org/testDetails.php?test=266709768&build=3539864

I suspect there is a rounding error or something like that, which is
causing two of the symbols to end up exactly on top of two of the
other symbols.


On Wed, Oct 22, 2014 at 1:40 PM, Sean McBride <[hidden email]
<http://vtk.1045678.n5.nabble.com/user/SendEmail.jtp?type=node&node=5729213&i=0>>
wrote:


> Hi all,
>
> I've had VTK dashboards running on OS X 10.10 for months now, but now
that 10.10 is out and the NDA is over I've directed them to the public
dashboard.
>
> Can someone please mark these as expected:
>
>  Mac10.10-clang-dbg-x86_64
>         Mac10.10-clang-rel-x86_64
>





Ken Martin PhD

Chairman & CFO

Kitware Inc.

28 Corporate Drive

Clifton Park NY 12065

ken.martin at kitware.com

518 881-4901 (w)

518 371-4573 (f)



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