Hi Dženan,

yes there is a reason why the far clipping plane is not thousands of units away: precision. Normaly, everything in ImageVis3D is very close to the viewer and for volumes it is very unlikely to have a giant extend (in particular since we normalize them to the unit cube). If we now for (very rare cases) increase the far distance, we will for (for the usual use case)  break depth buffer precision. The most useful thing I could image would be to expose a switch to the settings that increases the far distance.

Gruß
 Jens Krüger

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Interactive Visualization and Data Analysis Group
http://www.ivda.uni-saarland.de

Prof. Dr. Jens Krüger
Research Group Leader, MMCI
Senior Researcher, DFKI
Adjunct Professor, SCI
Adjunct Professor, University of Utah

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Am 08.12.2010 um 17:02 schrieb Dženan Zukić:

> Hi,
>
> I ran into another problem today. The far clipping plane is too near. I was trying to figure out transformations needed for my polygonal data, but in many cases they become invisible after applying transformation because they end up behind far clipping plane. I thought at first it was some bug with matrix transformation mechanism, but I quickly scanned the source code and it  led me to experiment with increasingly large numbers in transformation matrix.
>
> It appears that the far clipping plane is only few hundred units away! Can you increase it please? Or is there some reason for keeping it this small? Because there is not many objects in the scene (1-few), and the user usually wants to see them all.
>
> Regards,
> Dženan