That's what I thought. PV and more specifically VTK probably hardcodes
float representation. I once raised this issue with no resonance.
I think the single/double should be respected (visualization for
micro/nano). Of course one can scale, but this slows things down for
large transient datasets.
- Dominik
Michael Wild wrote:
It actually the data set you gave me for testing the Ogg/Theora stuff.
I just noticed that this only happens with your data set (I do not
have such small stuff normally ;-))
It really seems to be the size. If I scale with a factor of 35,
everything is fine. All smaller integer scaling factors result in this
effect (more pronounced the smaller the factor).
Michael
On 14. Aug, 2009, at 14:36, Dominik Szczerba wrote:
Can you post your dataset for a test?
I have observed a similar problems with whole actors disappearing
(the same way, as if gradually cut by something) for very small
datasets. I suspect this may have to do with single precision
accuracy somewhere.
- Dominik
Michael Wild wrote:
Hi all
In current CVS there seems to be a rendering problem with the
crosshairs displayed at the rotation centre. Whenever the x-y plane
is becoming close to normal to the view-vector (i.e. parallel to
the camera-plane), these markers simply disappear. Funny thing is,
they seem to be gradually "cut off" from left to right (or right
to left, depending on which way x-y is tilted).
To illustrate the problem, I created a small animation which
sweeps the camera from left to right: https://www.ifd.mavt.ethz.ch/people/wild/personal/files/sweep.mp4
- The first frame shows the partially cut-off crosshairs
- As the x-y plane becomes close to parallel with the view-plane,
it completely disappears
- Towards the end, the crosshairs gradually appear again
I see this problem both on Mac OS X 10.5.7 and OpenSUSE 10.3.
Am I the only one with this issue?
Michael
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