[Opensim-users] how hard is it to add nested linksets or equivalent

[Dahlia Trimble]

Much of the code in Opensimulator assumes a single level linkset. The main
structures are SceneObjectGroup and SceneObjectPart. I remember Ubit once
mentioning he thought some clever manipulation of these structures could
allow more levels of hierarchy but I can't remember exactly what he was
saying. I'd think the changes would be significant and would touch many
parts of the code if such a modification were attempted.

Other considerations is how it might fit into the protocols and if the
viewers can support it.

With the advent of mesh, it's easier to make a complex looking object, such
as the above mentioned wheel, out of a single SceneObjectPart. This should
reduce the need for multi-level composite objects. One way may be to have a
module which converts a linkset into a single mesh. I believe Misterblue
has some code which can do this but I don't know if he's tried to use it in
this manner.

It's also worth mentioning that more game modern programming techniques
(entity-component-system, data-oriented design) work much better with
single levels and modern games don't use hierarchical object trees as much
as they used to.

On Thu, Feb 28, 2019 at 2:09 PM Dr Ramesh Ramloll <r.ramloll at gmail.com>
wrote:

> Apparently hierarchical linksets is too hard to be implemented on the
> opensim platform.
> R
>
> On Thu, Feb 28, 2019 at 4:23 PM Serendipity Seraph <seren.seraph at gmail.com
> >
> wrote:
>
> > One thing that bugs hell out me is that an object that is a linkset
> cannot
> > be added as a subpart of a more complex object without adding its linkset
> > prims to the overall object.   Consider a car with wheel linksets and
> other
> > linksets.  It would be great to script the wheel standalone and yet have
> it
> > part of the car without some hack of having it track the car object and
> > stay in proper position relative to it as a separate object.   It would
> be
> > nice to remove and replace a wheel as a single operation no matter how
> much
> > of a fancy linkset the wheel itself is.   Many 3D tools today do allow
> this
> > capability.   How hard would it be to hack it into opensim?
> > _______________________________________________
> > Opensim-users mailing list
> > Opensim-users at opensimulator.org
> > http://opensimulator.org/cgi-bin/mailman/listinfo/opensim-users
> >
>
>
> --
> 'Consider how the lilies grow. They do not labor or spin.'
> *Rameshsharma Ramloll* PhD, CEO CTO DeepSemaphore LLC, Landisville, PA;
> Affiliate *Research Associate Professor*, Idaho State University,
> Pocatello, ID 83209 Tel: 208-240-0040
> LinkedIn <http://www.linkedin.com/in/rameshramloll>
> _______________________________________________
> Opensim-users mailing list
> Opensim-users at opensimulator.org
> http://opensimulator.org/cgi-bin/mailman/listinfo/opensim-users
>