[Opensim-dev] NINJA Physics - patch to allow joints for OpenSim

[Paul Fishwick]

I'd like to see this in the core as well - as long as someone does not 
accidentally
choose the reserved prim names (which seems unlikely), should be good? I 
look
forward to trying this out!
p

nlin wrote:
> 2008/12/19 Mircea Filipescu <mircea_the_kitsune at hotmail.com 
> <mailto:mircea_the_kitsune at hotmail.com>>
>
>     I've seen a Youtube video of that and I have to say it looks
>     stunning and awesome. I only have one question about it however:
>     How will that feature be activated client-side for a linkset? The
>     LL client doesn't offer a way to select two prims in a linkset and
>     choose to add such a feature between them.
>
>
> A specially name typed into the prim's name field 
> ("hingejoint-uniqueid" or "balljoint-uniqueid") causes the server to 
> recognize it as a joint. Joint bodies are specified by name in the 
> joint prim's description field. Unfortunately, you currently have to 
> manually ensure all joint and prim names are unique. More details 
> here: http://opensimulator.org/wiki/NINJA_Physics
>
> As you say, the LL client doesn't allow adding joints natively 
> (interestingly, it used to support such a feature, but this was 
> removed; the protocol still contains references to joints). Later, as 
> new viewers are developed, we can add custom UI fields for joints.
>  
>
>     My personal belief on this is that such linking should be made an
>     OSSL scripting function, which would also allow other features
>     like turning the flexy bouncing on or off at will and specify
>     properties like hardness, distance and others. So in that way, for
>     a car you would put a script in the wheels and specify in a
>     function in state_entry() how that should be like.
>
>
> I agree completely that OSSL scripting should also allow specification 
> of joints and parameters. I didn't implement anything of the sort yet 
> though. The advantage of linking with prim names is that it allows you 
> to interactively try out various joint combinations without having to 
> fire up a script. It is a bit tedious to type in the names of prims 
> manually into the joint prim's description field, but without custom 
> GUI support it's about as easy as we can get.
>  
>
>     Anyway awesome idea and congratulations to who made it, it rocks a
>     lot. Can't wait for it to be in :)
>
>
> Thanks!
> N Lin (nlin / Standard Drucker)
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-- 
Paul Fishwick, PhD
Professor and Director, Digital Arts and Sciences Programs
University of Florida
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