In this tutorial, we will learn the methods that were used to rig the transforming robot. Throughout these lessons, we will learn the tools and techniques used in the setup process of both our robot and truck. The goal is to break this complex idea down into a simple, and manageable form. We'll cover the rigging process in its entirety, and along this journey, we'll be introduced to several tools that will help make this all come together efficiently. By the end of the course, you'll have the set of skills needed to rig your own transforming robot.
In this lesson we will connect the fingers to our arm rig. The fingers have been mirrored. It's now time to do some parenting work. And then the last step will be to constrain the finger geometry. So let's go ahead and grab the index root, the mid, and the pinky roots. And let's go ahead and parent them to our hand bone. The thumb root, however, will be parented to the wrist. That way we get more of a flexible hand rig, with the thumb independent from the others. Later we'll create a custom attribute to drive this behavior in the hand. All right, so once that's done, we can move over to the right side and get these parented. Then we'll be ready to constrain our geometry. All right, so starting with a right thumb, let's go ahead and grab our thumb joint. Grab the root geometry. What's great about this is, the finger meshes have already been parented in the hierarchy they should have. So there's no need to go to the outliners to complete this step. Go to the object offset tool, and we can set the size to about a value of 32 or 33. Great. That will work. So I'll grab the end joint, grab the thumb mesh, run our object offset control tool, and set the size to 33. That's going to be the same size for the rest of these. And then you can go in and re-color each curve. The only size that might be different will be the mid root's control, simply because of the knuckle mesh. It's kind of large, so it'll be a lot easier to go ahead and set the size to something a little bit higher. So let's go ahead and work on that. With the knuckle root selected, we can go in and grab its geometry. There we go. And we can set the size to about 55. Let's see how that looks. That looks like it will work. So let's do that for the rest of the fingers and get all of these re-colored. And then in the next lesson we'll create our primary finger controls.