reactor: Z value not 0

Is there a way, using reactors, to perform certain tasks when an entity in a drawing is not at z=0 ??

 

I'm sure that there is a way ;-))


(sorry, couldn't resist)

 

I have one request by a user, so that the ucsicon automatically comes on for 3D and off for 2D. I have a lisp routine that does this when the drawing is open, but was just wondering if it could be done with reactors.

 

thanks

 

anyway.. here's my lisp version: (setq ex (getvar "extmax"))(setq z (caddr ex))(if (not (= 0 z))(setvar "ucsicon" 1))

 

I'll have to try this on A2K4, it doesn't work on A2Ki.

 

just jumping in because of curiousity: how's the probability to get away
with setting a sysvar in a reaction to a change of a sysvar without
negative consequences?

 

Ruul,
You can temporarily disable the reactor during
the callback.

 

ok. reactor gets fired, reaction is disabled, variable set and reactor
enabled again.

i asked because i thought there maybe is some other trick of setting a
variable without the event being triggered.

thanks

 

I'm a reactor amateur, so bare with me, but you seem to wait for UCSICON
being changed.
then EXTMAX is checked and UCSICON set.

shouldn't a change of EXTMAX trigger a different setting of UCSICON?

EXTMAX gets set after display list recalculation but doesn't trigger the
reactor.

just wondering

 

Thanks... I'll give it a try.