I have a float script controlling my wheel:

dependsOn $Body.modifiers[1].tirespin.controller
spinrate=$Body.modifiers[1].tirespin
DegToRad((CurrentTime)*31*spinrate)

where the Body is the car body
the modifiers[1] is a attribute holder with a “tirespin” attribute.

The problem is this…

it works to set up the spin, but when I animate it back to zero, the wheel cranks itself all the way back to its starting point.  I just want to have the spin stop, not rewind.

The wheel has 3 Eulers on it.  1 - Zero setting 2 - Animation 3 Manual control Manual layer is active.

thanks!

Tim

Maybe this needs to be moved to the Rigging Discussion??

Tim

no rigging gurus out there want to tackle this one?  or maybe a different solution?

Tim

You can probably put a conditional statement into your script so that the wheels only rotate when the body of the car is moving forward. The fastest way might be to have 2 sets of tires, one set visible and the other set not visible. Apply the script to one of the sets and swap visibility to the other set to stop rotation.

Max 2012(64) Win 7 - 64
NVIDIA Quadro FX 5800
Dual Xeon E5520 Six-Core, 3.33GHz
16GB DDR3

I don’t want to just stop the rotation… I want to slow it down.

As I increase the spinner now, the wheel rotation increases in speed.  I want it to work backwards as well.

Tim

Is there no way to do this?

I want a spinner that as I increase it, a wheel rotates clockwise faster and faster…
then as I decrease the spinner, the wheel slows down (going the same direction) and when the spinner is zero, the wheel would be stopped.  Ideally if I went into the negative values, the wheel would work the opposite rotation as well.

Tim

Can you expand on that a bit more?

I set the spinrate as I have above.  (this creates a constant spin)
then at every frame I read the previous frame’s spinrate / rotation (not sure how to do that)

how will adding a value to spinrate slowly decrease the rotation?

Currently the script sets a spin rate based on the value of the spinner.  The problem comes in as it decreases, the wheel rotates backwards to where the original (zero state rotation) spin rate is.

Sorry.. am a bit new at the maxscript.  I am trying to understand the logic, but don’t follow exactly.

Tim