[Opensim-dev] partially functional llSetKeyframedMotion implementation

[Dahlia Trimble]

I think llSetKeyFramedMotion() is non-physical motion and it also uses a
list of "keyframes" to define a path which is not necessarily straight and
can have multiple points and turns. I believe part of the motivation behind
the function was to provide a low-overhead non-physical motion system that
allowed objects to move smoothly rather than in discreet steps. Using the
function, a script just provides the keyframe path and then the sim does
the rest; therefore the script doesn't need to consistently and
periodically update the object position and rotation. I'm not certain about
protocol but the function could eliminate the need for sending many update
packets by specifying velocity and angular velocity in just a few packets,
probably as few as one for each keyframe.

On Fri, Sep 28, 2012 at 6:36 PM, Justin Clark-Casey <
jjustincc at googlemail.com> wrote:

> Looks interesting.  I'd like to take a look but unfortunately I have
> various other things queued right now.  However, I did leave a couple of
> notes on the mantis.
>
> Perhaps you could explain to me why llSetKeyFramedMotion() is better than
> llMoveToTarget()?  I know OpenSimulator works somewhat differently to the
> LL simulator (e.g. scripts do not run within time slices of the scene loop
> - which is what I'm guessing happens on LL) so things might be different on
> OpenSimulator.
>
>
> On 27/09/12 19:25, SignpostMarv Martin wrote:
>
>> I started work on an implementation of llSetKeyframedMotion at work the
>> other day, but ran into some issues.
>>
>> Would be nice if other devs could take a look and try to get it working?
>> http://opensimulator.org/**mantis/view.php?id=6112<http://opensimulator.org/mantis/view.php?id=6112>
>>
>> I've only tested it with ping-pong translations (it goes too far when
>> going backwards) and rotations are untested and
>> known to be borked.
>>
>>
>> ~ Marv.
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>>
>
> --
> Justin Clark-Casey (justincc)
> OSVW Consulting
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