Hello forum! I'm fairly new to Houdini, very experienced in Maya. It's my first post here, so please be gentle.
I'm having some trouble getting IK to work properly with Apex. When I blend between FK and IK, the left hip flips 360-degrees (not the right hip, nor the arms). When I activate smooth-IK, there is severe popping when manipulating the end-effector.
Been trying for over a week to debug these issues, and I'm getting nowhere... can anybody point me in the right direction? Attached is a crude repro file.
Flipping and Popping IK in Apex
592 5 3- mrVal
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william_harley
Hi, looks like you are getting popping because the mainaxis parm for the strech is set to X, it should be set to the axis that faces down the bone. In most cases this would be Z.
That should fix it.
Hi William. My joints do point down the x-axis. I tried your suggestion (as well as setting it to Y) just in case, but that did not resolve the issue. Instead it caused the joints to stretch sideways when the leg was over-extended.
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