Animation Rigging --- Two bone IK "Pole Angle" options support

After I play with the new Animation Rigging package, especially the Two-bone IK feature, I think this is going to a very useful feature to make a more realistic game character and apply physics to the body.

One thing I found missing in the tools is the “Pole Angle” support for the joint, as I sometime found the joints bends unexpected, for example the IK on the leg, knees bends sideway, and so far I don’t know what exactly leads to this and how can I fix this.

I upload some screenshot to showcase what I meant, but if anyone has a suggestion, please don’t hesitate to share. Thanks!

To control the bend of the TwoBoneIK you should add a hint to the contraint. This video(@1:58) shows how you can change the direction of the knee using a hint effector.