[Robotics] IPO drivers within an armature

[Istvan burbank]

To give an example of what I mean, here is what I am trying to do:

I have one bone to which two others are parented. As I move the parent
bone up, the children follow. However I also when them to move apart.
My original idea was to use the height of the parent bone as a driver
along the Y axis for the children, so as the parent goes up the
children go up and out. I can't move the parent bone to the side,
because the children are moving away from each other, and moving the
parent to the side would have both children move in the same
direction.

Sorry, I probably should have been more clear.

On Wed, Apr 8, 2009 at 4:52 AM, Benoit Bolsee <benoit.bolsee at online.be> wrote:
> If you want that the slave bone follows exactly the movements of the
> master bone, you can use the "Child of" constraint on the slave bone and
> make it child of the master bone.
>
> /Benoit
>
>> -----Original Message-----
>> From: robotics-bounces at blender.org
>> [mailto:robotics-bounces at blender.org] On Behalf Of Istvan burbank
>> Sent: mercredi 8 avril 2009 2:09
>> To: blender Robotics
>> Subject: [Robotics] IPO drivers within an armature
>>
>>
>> I had actually just started making a robot when this list
>> started, perfect timing!
>>
>> As I was sketching out a plan, and making some test rigs I
>> came across a problem: When one bone moves I want another
>> bone in the same rig to move from an IPO driver. The problem
>> is that I can't use a bone from the same object as the bone
>> is in that is being controlled. The solution (I think) is to
>> parent a dummy object to the driver bone, then have the IPO
>> driver be driven by the dummy, however I think this to be
>> rather in-elegant. Are there any solutions/tips people would
>> like to offer?
>>
>> ~Istvan.
>> --
>> Knowledge is a measure of how many answers you have,
>> intelligence is a measure of how many questions you have.
>> "Elegance has the disadvantage that hard work is needed to
>> achieve it and a good education to appreciate it." - E. W.
>> Dijkstra  ---  the price of humility doubles each time you
>> have to buy it back ~ rick dickulous "Intelligence is not
>> enough. Intelligence plus character, that is the goal of true
>> education." ~ Martin Luther King, Jr.
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>
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-- 
Knowledge is a measure of how many answers you have, intelligence is a
measure of how many questions you have.
"Elegance has the disadvantage that hard work is needed to achieve it
and a good education to appreciate it." - E. W. Dijkstra  ---  the
price of humility doubles each time you have to buy it back ~ rick
dickulous
"Intelligence is not enough. Intelligence plus character, that is the
goal of true education." ~ Martin Luther King, Jr.