[vos-d] Interpolation in TerAngreal

[Reed Hedges]

I've been writing some code that makes some objects fly around and Ken's 
interpolation code makes it look nice and smooth.   However, in doing so 
I experimented a bit with position update frequency, wondering what the 
slowest rate I could use is, especially when the velocity I was trying 
to show was constant.  There's effectively a maximum speed that the 
interpolation achieves, so that if you update less than several times a 
second (e.g. once or twice a second), the object has a really jerky 
start-stop motion.

Is there a quick fix for this? Or should we just let that issue be, and 
later add concepts of velocity and acceleration to A3DL?

Would it be possible to add position-interpolation-speed and 
orientation-interpolation-speed properties to Object3D? Or 
position-update-freq-hint and orientation-update-freq-hint?  These would 
be advisory parameters for the interpolation code, that would let it 
choose object velocity in the interpolation.  I like the idea of 
update-freq-hint, because it's not implying anything other than what the 
server side is doing (updating the property periodically). However,  the 
client side would always be one step behind, so it might make things 
look pretty glitchy.

Thoughts?

Reed