[GRASS5] NVIZ bug fixes

Hello list, hello Bob:

Thanks for doing such a great job making NVIZ better !

I have applied a couple of bug fixes to nviz and the ogsf library. The
bug fixes address the problems reported in bugs #3646 and #3686 which
deal with the movement between the new flythrough mode and the old "eye"
/ "center" mode.

This works nicely.

With respect to bug #3686 the user can now set the "from" position
without the scene swinging around. As an an added help, the user can
click the stop button in the middle of an animation and the "eye" widget
(if open) will set the position puck to the animation position. This
should be helpful for fine tuning key frames. This has been added to
both the animation and the key frame animation panels.

This is really good to have.

Please test and see if this fixes the reported bugs.

I noticed some odd behaviour regarding labels in (keyframe) animations: When
the rendering is done off-screen, the labels are not included. Also,
offscreen-rendering is not really usable: Rendering starts like its supposed
to, but after switching away and back to the Desktop where GRASS/NVIZ is
running, NVIZ proceeds with on-screen rendering. Worse, the generated PPMs
become partial screenshots of the currently active Desktop (windows, shells,
games, whatever).

Peter

--
Dr. Peter Löwe

Diplom-Geograph

<loewe@geomancers.net>
<peter.loewe@gmx.de>

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