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Is there a Set Driven Key in 3DS Max similar to Maya?
show user profile  jgilbreath
Hello all!

I have a quick question, is there a set driven key function in 3DS Max similar to Maya?

I have been a Maya modeler until recently and am needing that sort of functionality.

Thank you!
read 2943 times
9/21/2012 5:41:57 PM (last edit: 9/21/2012 5:41:57 PM)
show user profile  herfst1
I think so. I'm not familiar with Maya and Set Driven Keys but...

There is a "Set key" (where you have to click it each time you want to set an animation... obviously) and an "Auto Key" (which automatically sets keys every time you tweak... even more obviously).

They're found to the right of your timeline at the bottom of the screen.
read 2929 times
9/21/2012 7:43:44 PM (last edit: 9/21/2012 7:43:44 PM)
show user profile  jgilbreath
Thank you for your response herfst1.

I am referencing to a different function though, Set Driven key is a function that allows you to tie a properties action to another objects property.

For example, if a sphere is moved one directions you can force another object to more in the same direction. Without having to animate it.

I am trying to make a plane propeller turn when I move an airplane. Instead of having to animate the prop turning, I would like to have it automatically turn when I animate the plane moving.

So, that might help finding that kind of functionality.

read 2922 times
9/21/2012 8:25:36 PM (last edit: 9/21/2012 8:25:36 PM)
show user profile  herfst1
I think wire parameters are what you're after. If you select the propeller and right click on it you should see wire parameters as one of the options. Select transform -> rotation -> x/y/z (whichever axis you want to rotate propeller), then select the plane and choose transform -> position -> x/y/z (whichever axis you want to move the plane). You'll get a dialogue box come up. Choose the arrow which points towards the position Bezier float (so that the propeller only rotates when the plane moves). Press connect. Done.
read 2917 times
9/21/2012 8:42:40 PM (last edit: 9/21/2012 8:43:37 PM)
show user profile  digital3ds
herfst is correct, and to get it to perform like you would expect to see in maya you'll want to use the parameter editor (alt 1). This is what you'll wire your values to. use f1 for the help files or find a quick tut, but this is what you're looking for
- Mike Sawicki

read 2911 times
9/21/2012 8:51:14 PM (last edit: 9/21/2012 8:51:14 PM)
show user profile  jgilbreath
Thank you for the advise, herfst1!

This functionality work perfectly for un-grouped items. Can it work between grouped objects?
read 2873 times
9/24/2012 10:16:10 PM (last edit: 9/24/2012 10:16:10 PM)
show user profile  herfst1
I don't ever group items as it sometimes has issues.

Generally it's better to either attach items into one object or "Select and Link" them.

In the case of the plane you might want to grab all of the accessories (wheels, rudders etc) and link them to the main body. Then when you move the body they'll follow. This should also work fine for the propeller. If there is an issue, though, you can make a dummy, link the propeller to the dummy and then link the dummy to the main body.

P.S. The "Select and Link" button is near the top left, it's black and white. Else you can look in the animation menu (top) -> constraints -> link.
read 2869 times
9/24/2012 10:30:34 PM (last edit: 9/24/2012 10:31:57 PM)
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