this tutorial we will build an ik leg with a simple foot control setup.
This will give us a foot controller that will move and rotate the whole
foot. The heel control will lift the heel , the toe controller will
allow the foot to pivot on the toe, and a toetap controller that will
allow us to lift or wiggle the toes.
First create a leg and name the joints according to the image.You'll want to create the joints in the side view.
select the joints and modify>freeze transforms.
Use skeleton>Orient Joints when finished
Create an IK Handle using Skeleton>IKhandle from hip_L to foot_L
and name the handle foot_L_ikHandle
Create another IK Handle using Skeleton>IKhandle from foot_L to ball_L
and name the handle ball_L_ikHandle
Create Nurbs Circles and spheres to use as controls.Scale,place them and name
as shown in the image.When done, Freeze Transforms on the controls.Use
the insert key to place all the control pivots at their corresponding
Create a group called "foot_ctrl_pos" by selecting nothing and pressing ctrl+g.
Parent all your controls under the new group by using the middle mouse button in the outliner.
Your hierarchy should appear as it does in the above image. Also parent the ball_L_ikHandle under the heel_ctrl
Constraints: Now we will connect the constraints.
Select: toetap_ctrl and ball_L then constrain>orient
Select: foot_l_ikHandle and foot_L then constrain>orient
Done!! Try out your new foot!