Scaling rotation via empty

Support Animation and Rigging
1

I have a question - is there a way to increase a degree of rotation via empties?

I have a part with custom data block, which is rotated around a hardcoded handle by defined angle - by approx. 3 degrees. I want to rotate it around the pivot point by 90 degrees.

So i want to parent the part to a empty and the empty to the hardcoded handle - but how can i increase the rotation factor of this empty?

http://i.imgur.com/ZG5KGvh.png
ZG5KGvh.png811×687

Any help will be appreciated.

2

It sounds like your working with the Game Engine…

So I’m not sure if this applies to the GE…

but…

Drivers…

RMB on any field in the Empty and a popup menu comes up select “Add a Driver”

then go to the ‘graph editor’ window…
on the bottom tool bar and where it says “F-curv”…
change that to “Driver”… then press ‘N’ to bring up the Right hand tool bar menu… there you will find a place to input a formual into the driver… such as Var * 6 +1 … etc…

also I may be missunderstanding what it is your trying to do…
it might need you to just ‘Apply’ your rotation on your object…

3

Thank you! I will try this today. It’s also my fault of not providing more information, that it is a imported car model from ZModeler - i wanted to make a rotating lights for a GTA car.
[spoiler]

http://i.imgur.com/RjuM5BY.png
RjuM5BY.png598×1822
[/spoiler]
The “light_cover” empty is a imported bone, which is supposed to rotate 90°, but the game code only rotates it by 6°. Meanwhile, i tried a crude workaround by parenting multiple empties on each other copying the rotation angle of its respective parent.
http://i.imgur.com/MgJFhei.png
By placing them in the same coordinates, i was able to modify the angle - but ultimately failed, as the file had to retain its exclusive bone structure for export back in game.
http://i.imgur.com/vgQbXWH.png
vgQbXWH.png779×367

If i can manage to apply Driver to this “light_cover” or its replacement, which, i hope, may fool the code of GTA V…it could work.

4

Sorry I’ve taken so long to respond back I have had a bit of the Flu here of times of late…

Instead of using Empties I would use Bones… you can Parent as many bones on top of each other as you want…

5

Unfortunately, GTA won’t recognize any other bones, than the ones which were already there, means, somehow i have to add some kind of multiplicator to the rotation. And so far, i have failed to find out, how it works with drivers.

6

Not sure if you will get all the blender animation tools to work with GTA…
I can’t seem to find much about it in any searches on the net…

would be interesting to find out however…

here’s some guys talking about GTA 4…

http://www.blenderartists.org/forum/showthread.php?183425-Blender-and-GTA-4

you might try contacting them via private message to see if they know more about it…