NVIZ in GRASS 6beta2 (built from source) still contains the
strange coloring bug regarding 3d-site-vectors:
When such vectors are displayed atop raster data, everything is
fine at first sight. However, any manipulation requiring a redraw
renders the image pitch-black. Setting the lighting to max shows
that the color used for the sites is somehow "draped" over the
landscape + the weird darkening effect.
This bug prevents any serious use of 3d-sites, except for "gothic
GIS" if there is such a thing.
Peter
--
Dr. Peter Löwe
Diplom-Geograph
<loewe@geomancers.net>
<peter.loewe@gmx.de>
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Dear all:
NVIZ in GRASS 6beta2 (built from source) still contains the strange coloring bug regarding 3d-site-vectors: When such vectors are displayed atop raster data, everything is fine at first sight. However, any manipulation requiring a redraw renders the image pitch-black. Setting the lighting to max shows that the color used for the sites is somehow "draped" over the landscape + the weird darkening effect.
This bug prevents any serious use of 3d-sites, except for "gothic GIS" if there is such a thing.
Peter
Peter, I tried it yesterday with the 3D site file that is in the demo
data set slovakia - it worked fine - both when draped and when displayed
as 3D. Can you try it with the slovakia data set
(remeber to load it as vector points from nviz interface, not vector
from command line) and see whether it works? If yes, we need to look at
your data to see what is different,
NVIZ in GRASS 6beta2 (built from source) still contains the
strange coloring bug regarding 3d-site-vectors:
When such vectors are displayed atop raster data, everything is
fine at first sight. However, any manipulation requiring a redraw
renders the image pitch-black. Setting the lighting to max shows
that the color used for the sites is somehow "draped" over the
landscape + the weird darkening effect.
This bug prevents any serious use of 3d-sites, except for "gothic
GIS" if there is such a thing.
Hi Peter,
can you try the same data on a different computer? (with a different video card)
OpenGL bugs may come from all angles, including the driver.
From: "Helena" <hmitaso@unity.ncsu.edu>
Subject: Re: [GRASS5] NVIZ - more bugs
peter.loewe@gmx.de wrote:
Dear all: NVIZ in GRASS 6beta2 (built from source) still contains the
strange coloring bug regarding 3d-site-vectors: When such vectors are
displayed atop raster data, everything is fine at first sight. However,
any manipulation requiring a redraw renders the image pitch-black.
Setting the lighting to max shows that the color used for the sites is
somehow "draped" over the landscape + the weird darkening effect. This
bug prevents any serious use of 3d-sites, except for "gothic GIS" if
there is such a thing. Peter
hmitaso@unity.ncsu.edu wrote:
Peter, I tried it yesterday with the 3D site file that is in the demo
data set slovakia - it worked fine - both when draped and when displayed
as 3D. Can you try it with the slovakia data set
(remeber to load it as vector points from nviz interface, not vector
from command line) and see whether it works? If yes, we need to look at
your data to see what is different,
I haven't tried with points, but with 3d lines it works ok. However, when any 3d polygon is added the display turns into "gothic GIS" indeed. See the attachments please and http://intevation.de/rt/webrt?serial_num=2991 for more details.
I'm reffering to grass-6.0.cvs_src_snapshot_2005_02_12.
On Tue, Mar 01, 2005 at 03:25:44PM +1300, Hamish wrote:
> NVIZ in GRASS 6beta2 (built from source) still contains the
> strange coloring bug regarding 3d-site-vectors:
> When such vectors are displayed atop raster data, everything is
> fine at first sight. However, any manipulation requiring a redraw
> renders the image pitch-black. Setting the lighting to max shows
> that the color used for the sites is somehow "draped" over the
> landscape + the weird darkening effect.
>
> This bug prevents any serious use of 3d-sites, except for "gothic
> GIS" if there is such a thing.
indeed. See the attachments please and 
