Hi Matthias,
On Tue, 2005-07-05 at 15:12 +0200, Matthias Biedermann wrote:
> Hi there,
>
> We need to create terrain from xyz data (i.e., 3D points in regular
> grid). This data also exists in VRML format containing ElevationGrid
> nodes. We have already found a thread on the mailing list archive, but
> are still unsure how to create (detailed) terrain for OpenSG rendering.
> Is Gerrit's VRMLLoader capable of reading these nodes? And if so, is
> this part of the Experimental folder included in the standard build? Or
> would you suggest a completely different approach, like building the
> grid completely from scratch?
Looking at the code I think it supports ElevationGrid nodes, so you
should be able to load your data with. However, it just loads all of it
into a Geometry and does nothing smart about LODs.
> Above that, we've found a Terrain module in the Contrib folder. What can
> that be used for?
That is an example that Christoph Fuenfzig wrote, for looking at
dynamically changing geometry. As such it does geomorphing, which gives
better performance. However, the input data right now has to be an image
(which is extruded to get the depth). It would probably be possible to
combine the two and change the Terrain node to accept data that the VRML
loader can generate, but AFAIK noone has done that yet.
Yours
Dirk
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