Lead Elbow Strike Control in IK/FK setup...

#1

My apologies if this has already been asked… but can someone point me to a 3ds Max tutorial or explain how to rig an elbow control as part of the IK setup (…not the IK swivel angle target) as part of the arm’s IK/FK blended setup that would allow for doing lead elbow strikes and not mess up the arm’s IK control???

Or would it be best to just accomplish this elbow strike using the FK arm control at the elbow (setting the arm into FK mode)?

Thanks in advance!

#2

do u want ur forearm to be able to work in FK, while retaining the complete arm in IK…?

#3

The FK arm is independent from the IK arm in the FK/IK Blend Method… I’m asking how to set up the IK arm so that you have an additional control to move the IK arm at the elbow (e.g. for leading elbow strikes in a fight scene) and not mess up the IK control object(s) at the wrist that govern the arm.

#4

hey Archangel, i hvnt tried rigging in 3DS Max, but will try to help u with the concept that u may try for ur setup… i use this one from Jason Schleifer’s rigging DVD n it might help u…

the main idea is that the base arm is controlled either by an Ik or an Fk arm… (nothing fancy till now, right…!! )… now, in ik arm, we’ll have a choice of keeping our forearm in Fk or Ik mode… this, i think may solve ur problem…

-in ur regular Ik arm, put a controller on the elbow (which u’ll be using as a pivot) and another for the wrist.

  • parent this wrist controller under the elbow controller so that when u rotate the elbow controller, the wrist controller moves with it jst as in regular FK arm…
  • now we have to tell the Ik handle whether to follow the arm in complete IK mode or in partial IK mode i.e. IK arm with forearm in FK mode. So for that, u may parent the ik handle under any node (locator, group etc) and then have that node constrained with wrist control of Full Ik arm and Partial IK arm (i.e. IK arm with forearm in FK mode)
    you can use the elbow controller as the pole vector for controlling the elbow in complete IK arm…

Now u have a choice of keeping the Ik forearm in Ik or FK mode, keeping the overall arm in Ik…
this may sound complicated but believe me, if u get the point, its jst a piece of cake…
hope this helps u… let me know if i got it correct…

#5

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