In this tutorial we will be creating an IK setup, controls, and skinning for the little kitty above.
The first step is to make a model. This one is in NURBS, but you can make it in subdivison surfaces instead if you want.
MODELING
Make some curve circles and move them around til they look like the above illustration (I never said this was a modeling tutorial).
Loft it together so it looks like this. It is sort of rough with the seams, but since I put fur on it later it didn't matter too much.
SKINNING
Make a skeleton and stick some IK chains on it. (I used a spline IK for the back, Rotate Plane solvers for the legs, and lots of little IK's for each joint of the tail).
Now we're gonna skin it. But since I don't feel like editing a zillion control points on all of my NURBS objects, we are going to make a
simple reference object (see above illustration) and skin
that to the skeleton. There are way less points to edit so the skinning is manageable.
Then just attach the NURBS geometry to the polygon reference object with a wrap deformer, and you're done.
What's cool about this skinning method is that I also have a dummy object that I can animate with that is way less heavy than my detailed model (see below), so it goes faster.
And I can even unwrap my model, make changes to it, and then re-wrap it without having to do the weighting all over again since it is done on the simple reference object.
CHARACTER CONTROLSSo now comes the part you've all been waiting for: The Character Setup! Hooboy! We're gonna get a bit complicated now, so hold on to your hat.
We want to have three basic kinds of controls here:
* Translation and Orientation controls
* Toe Roll Controls
* Spline Handle Controls
.
