Scaling the spine IK joints

00:03

If we select the FK joints,

00:06

you can see that they look OK and are already at the correct scale.

00:10

But if I select the IK joints,

00:13

you see they are much shorter because they aren't scaling with the rig.

00:17

So we need to update these too.

00:20

If we scale the first Pelvis IK joint,

00:23

it doesn't affect the rest of the joints because of scale segment compensation,

00:28

we also can't connect to the scale attribute because some

00:32

of them are already driven by the stretch systems.

00:36

Another option would be to simply scale the spine group,

00:39

but this doesn't work either

00:41

although it will scale the joints for us. So we could use a group

00:46

press control energy to create an empty group

00:50

because this is going to scale with the root control.

00:52

We need its pivot to be at the world root

00:55

the same as the root control,

00:58

rename it to spine scale group

01:01

and move this into the spine group.

01:05

Now move the pelvis eye care joint into the new group.

01:09

So we can use this group to scale the eye care joints instead

01:12

and it won't affect the rest of the spine systems.

01:16

Ok. Let's connect this.

01:18

So the group in the right,

01:20

the root control in the left

01:22

and simply connect scale to scale.

01:25

And the spine is now correct.

01:28

We can scale the rig

01:30

and the spine stays where it should be but adjusts with the scale,

01:35

we can also pose the spine like this

01:39

and it stays in position as the rig scales.