[Opensim-dev] Hypergrid, ODE, and Mesh Upload

[Dahlia Trimble]

I think loading meshes for use as physical proxies would be possible if it
were a simple format, such as ".obj". There would need to be some kind of
constraints on the mesh such as limits to the features that the file formats
can use, and limits to the number of vertices and triangles so as to not use
too much server memory or collision calculation time. Another issue is the
storage and retrieval of mesh assets. I dont think we have a simple way for
the sim to retrieve mesh assets with the current asset databases that are
implemented.
A short term solution may be to make a simple proxy with transparent prims
that approximate the shape of the mesh. We can also use sculpted prims for
physics proxies.


On Fri, Nov 21, 2008 at 12:54 PM, Paul Fishwick <metaphorz at gmail.com> wrote:

> This is just a "me too" message with regard to Hypergrid and ODE, and a
> general mesh question in part (3).
>
> (1) Hypergrid
>
> I've been experimenting around with Hypergrid, and this has a real
> potential for laying
> the virtual groundwork for world cross-linkage and small community
> building -- something missing. The problem of
> https://jira.secondlife.com/browse/SVC-2941 is
> significant since one has to know, ahead of time, where grids locate
> themselves,
> but hopefully that will be fixed. In the mean time, having this part
> of the release
> seems really good. In a release incorporating the hypergrid, would there be
> an opensim.ini (rather than the current approach using a command line
> option)?
>
> (2) ODE
>
> We have done some small robot work here using OpenGL, OGRE, and ODE so
> having this capability in OpenSim seems to make a lot of sense. I
> suppose there is
> always the issue of server load (where ODE is running) but that can be
> at the discretion
> of the server admin.
>
> (3) Mesh Loads
>
> Do you think it possible to employ an osl function for loading an arbitrary
> mesh
> (similar to what is attempting to be done in RealXtend) ? I've looked
> through some
> of the code in meshmerizer, and while this was a cursory inspection,
> all of the prims
> seem to be already based on meshes, suggesting that to allow arbitrary
> mesh loads
> could be straightforward. Thoughts?
>
> -p
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