Noob help request please to carry this the last 2 yards to the goal line! I'm trying to rig 2 objects who move up and down Z independently, and a 3rd point that tracks them horizontally, at the same distance, in the Y axis as the 2 in Z move together and apart. Please see the attached Blend file.
I can best describe the requirements using our hands: Place your hands palms-together in front of you, (like praying). Obviously the dist between your wrists and your finger tips are fixed. Now, move either of your wrists, singularly, or together, away from each other in a horizontally straight line, while keeping your finger tips together. Notice how your hands eventually flatten out horizontally, palms down at the point where your hand size restricts any further wrist movement without moving your fingers apart.
That's what I'm trying to get to -- that V-shaped movement with the fingers as the linked pivot. I've got there most of the way. Please see the blend file attached. My rig gets the central finger touch-point to track the wrist movement very well as they draw together/closer, but it's the point where the wrists move apart is where the rig breaks down -- the pivot will not go/align itself to a vertical position in the Z, as I'd expect.
What am I doing incorrectly or missing please? Mark