Info-Volumizer Mailing List Archives: dataConvert() bug?

dataConvert() bug?

Dave Ahn (ahn@vec.wfubmc.edu)
Mon, 8 Nov 1999 23:17:26 -0500

Hello,

I've perused the archive and found no mention of this, so here I go...

I believe I may have uncovered a bug with voAppearanceActions::dataConvert().
In the case where I'm using UNSIGNED_SHORT data type in INTENSITY format,
if I specify an external format of LUMINANCE_ALPHA (as returned by
getBestParameters() for Impact & MXE), then dataConvert() fails to convert
the voxels from i1i2i3i4 to i1i1i2i2i3i3i4i4. This also occurs on an Onyx
IR if I force the external format to LUMINANCE_ALPHA. In order to get
correct behavior, I had to convert the data manually. Below are links to
two snapshots and a stripped down program to illustrate the apparent bug.

        http://www.vec.wfubmc.edu/volumizer_bug/vo_auto_cvt.gif
        http://www.vec.wfubmc.edu/volumizer_bug/vo_manual_cvt.gif
        http://www.vec.wfubmc.edu/volumizer_bug/volumize_bug.cc

Of course, I could be doing something so obviously wrong that it's
escaping me!

I have not tested dataConvert() in other format and datatype pairs.

My platforms are:
        Onyx IR 4xR10K, IRIX 6.2, Volumizer 1.1 + 3696
        Octane MXE R12K, IRIX 6.5.5m, Volumizer 1.1 + 3696
        Indigo2 Max Impact/TRAM R10K, IRIX 6.5.5m, Volumizer 1.1 + 3696

Regards,
Dave

-- 
Dave Ahn <ahn@vec.wfubmc.edu>        |  "When you were born, you cried and the
                                     |  world rejoiced.  Try to live your life
Virtual Endoscopy Center             |  so that when you die, you will rejoice
Wake Forest Univ. School of Medicine |  and the world will cry."  -1/2 jj^2

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