CGTalk - Reversing rotation

Notum

01-10-2003, 07:41 PM

I have a quick question. If I have 2 objects, say to cylinders, and I want to be able to turn one and have the other turn in the other direction.
Say a rotate the cylinger to the right, then I want the other cylinder to rotate left.

Any tips?

snot_nose

01-10-2003, 08:41 PM

yeah, i think you should use the expression controller for this one.

Notum

01-10-2003, 08:43 PM

figured as much... problem is... I don't know how to do it....

Notum

01-10-2003, 09:19 PM

please guys... I know that at least one of you must know this.
I really need help.

snot_nose

01-10-2003, 10:30 PM

well, i don't have much of experience with the expression controller but this is an easy one.
first you need to apply a XYZ euler to both of the cylinder rotation controller.
now lets say you want to make cylinder02 to rotate the opposite way on the Y axis from cylinder01
so you apply a float expression to the Y rotation of cylinder02.
in the expression dialog you CREATE VARIABLE, called, lets say "deg", then you click assign to constant and put a value of 360 degrees.
then you create another variable called lets say cylinder01 and assign the controller Y rotation from cylinder 01.
then you write in the expression dialog "deg-cylinder01"
and that's it.

Notum

01-11-2003, 12:06 PM

thanks man. I'll try that out and see what I get. :)

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