[GRASS-user] Light shading of 3D polygons in NViz changes every time the DRAW button is used

Markus Neteler neteler at osgeo.org
Sat Apr 20 14:51:31 PDT 2013

On Thu, Mar 28, 2013 at 10:45 AM, niktzel <niktzel at survey.ntua.gr> wrote:
> I'm trying to make a small 3D scene with some buildings on a DEM, using Grass
> and NViz via QGIS.
> Every time I use the DRAW button the shades from the lighting are changing
> and they are always different!..
> Also the lighting seems strange, it seems like there's a different light
> source placed in a different place for every building!..
> Some idea of what happens from anyone? Or is it a bug?
> Images are attached coming from 3 successive uses of the DRAW button.
> The platform is Windows 7 with QGIS 1.8.
> <http://osgeo-org.1560.n6.nabble.com/file/n5043484/draw.jpg>

To me it looks like a bug, perhaos worth a ticket.


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