[Opensim-users] llTargetOmega : Bug or feature ?

[Jeff Kelley]

At 10:08 PM -0700 7/30/20, Dahlia Trimble wrote:

>You're only setting llTargetOmega in state_entry().
>Note that if you put that script into the root prim of your linkset, the
>rotation will be in region coordinates. Since you're only setting it once
>during state_entry(), changing the orientation of the prim or linkset
>should have no effect on the spinning axis. It appears to be behaving
>properly based on your description and is not a bug.


This is a single prim and, although the specification does not 
explicitly state that it should rotate around the prim's axis 
(mentioning linksets as an exception), this is observed and desired 
behaviour.

I fail to understand when i should call llTargetOmega outside 
state_entry(), since resetting the script at any time re-issues the 
call.

Invoking llTargetOmega on touch_start() makes no difference, except 
if you take care to stop the rotation first, rotate the prim 
manually, then restart rotation.

integer spinning = FALSE;

default {

     touch_start (integer n) {
         if (spinning = ! spinning)
             llTargetOmega ( llRot2Up(llGetLocalRot()), 1, 1);
         else
             llTargetOmega ( ZERO_VECTOR, 0, 0);
     }

}

I admit that rotating a spinning prim manually is not a useful nor 
desirable thing. It happened accidentally in development, when I 
tested the whole thing for different orientations of "the wheel".


-- Jeff