Adding the knee control

00:03

The last step is to add the knee control.

00:06

We have our pole vector control here,

00:09

which will be the knee control.

00:12

Let's bring back the joints,

00:14

select the control

00:16

and then the knee joint

00:18

and use the match transformations tool to snap the control to the joint.

00:23

I'll swap to wireframe so we can see it.

00:26

I'm going to rotate this. So the point points at the knee,

00:31

I'll use snap. So we get an exact rotation

00:34

that's better

00:36

with the control selected. Add the calf, I care handle to the selection

00:42

and go to constrain Paul vector

00:46

if we move the control out. Now

00:49

you see we get the same issue as the elbow where the joints are moving.

00:54

So we need to add in the offset,

00:57

create two new locators

00:59

and match these to the knee joint.

01:02

Let's make them bigger so we can see them

01:06

and we need to move them out. So let's snap them

01:09

and maybe use 30 again.

01:12

Now parent one of the locators to the knee, I care joint

01:16

doesn't matter which of these are just temporary.

01:20

Move the control out now to the same place as the locators

01:25

turn off, snapping

01:28

and move the control until the locators lie in the same space,

01:33

maybe a bit more.

01:36

OK. That's close enough.

01:38

Let's test it before we delete the locators.

01:41

So there shouldn't be any movement when we switch between IK and FK.

01:46

OK. Good.

01:47

Now, delete the locators.

01:49

All we need to do now is clean up the controls.

01:53

So just move all the values down to the transform, offset parent matrix tab

01:58

or just use the script

02:00

that's zeroed out now. So he's ready to be animated.

02:05

Let's just hide the joints

02:08

and we have control over the knee,

02:11

I can move the foot

02:12

and the knee is pointing at the control.

02:16

We can also adjust the hock control to further refine the pose.

02:21

OK?

02:23

So all we need to do now is repeat the process over on the opposite arm and leg.

02:29

OK? That's the arms and legs set up with both FK and IK functionality.

02:35

So all the main areas can now be animated and they all move together.

02:40

I also cleaned up the joint orient values on the thigh joints,

02:43

which I forgot to do earlier.

02:45

So the spring solver is behaving now,

02:49

if you remember, because I left these values on the joints,

02:52

the thigh was rotating the opposite way.

02:56

Whereas now

02:57

they rotate the right way.