Anyone had a go at making a Speed Limit DOP?

It seems this could be done with the Modify Data DOP but vel is an option of the Position data so I'm a little uncertain. Not to mention angular velocity.. something simple for starters!

L

I guess the Motion DOP is a good example for this! cool…

OK I'm starting to get the hang of this custom data biz but I'd like to know why the RBD State DOP lets you use variables and the other DOPs don't.

for example, in the RBD State DOP, I'm putting something like:

if($accumulateImpacts>0,$velx*.1,$velx)

where accumulateImpacts is some custom sub data. That works fine. If I try that in a Drag DOP:

if($accumulateImpacts>0,10000,1)

It doesn't work and I have to use:

if(dopfield(“.”, $OBJID, “MyImpactData”, “Options”, 0, “accumulateImpacts”)>0,10000,1)

emmm.. that's a bit of a.. ummm.. drag. Why can't I use variables everywhere?

L