[GRASS5] [bug #2887] (grass) NVIZ volume polygon resolution error

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this bug's URL: http://intevation.de/rt/webrt?serial_num=2887
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Subject: NVIZ volume polygon resolution error

Platform: GNU/Linux/i386
grass binary for platform: Compiled from Sources
GRASS Version: 5.7.0 weekly snapshot from 12-25-04

Currently there is some kind of threshold regarding the polygon-resolution 
when displaying volumes in NVIZ. 
 
If the resolution is set under a magical critical value NVIZ just dies. 
Unfortunately no error messages are given, but this performance is easily 
reproduceable. 
 
I am currentlty testing NVIZ-volumes on a xy-location: x=40, y=40, z=18, 
x-y-z-resolutions are all set to 1. The volumes fill at max a third of the 
possible volume space. 
 
The phenomenon is independent from the size of the NVIZ-"monitor". 
 
The problem is particularly annoying since the first polygon-resolution set 
by NVIZ after a new layer of volumes has been created seldom shows all 
detail. Therefore the polygon-resolution has the be counted down by the 
user, which renders more detail until the the described error is (once 
again) encountered. 
 
Peter Loewe 

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