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Dynamically parenting the back wheels
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In this lesson we will dynamically parent the robot's back wheels. So this shouldn't hardly take any time. Let's go ahead and get right to work by using the GLDT tool to create our locator control. There it is. Feel free to adjust the size if you need to. All right, so at this point we'll go ahead and constrain down our joint object. So with the locator still selected, we'll grab our joint and use a parent constraint. All right, everything is working just fine. So next step is to head over to the out-liner, and make sure the group is stored underneath our control objects group. OK, so that's good to go. It's now time to set up the dynamic parent. So it's just a matter of grabbing the target object, the chest control, followed by the locator object, or the object that will be driven. We use our parent tool, and notice how much time that saves-- got to love it. So to test this out we can go ahead and start to move the chest around, everything's moving just fine. We'll add a little bit of rotation to the chest. Go back to the locator, test it out. Great. All right, so I'll go ahead and set the weight back to one, and bring the chest back to zero. Now one thing I'd like to change, just to keep the attribute itself consistent with the hips attribute, is the name of the parameter that drives the dynamic parent system. So we just want to rename this follow switch. And I'd just like to do this for this piece here. For the arms, that's going to be just fine. We can go ahead and leave the name as is. So you don't really have to change its name. I'm just doing this, again, to be a little bit more consistent with the other wheel rig connected to the hip. So I head over to edit, after I've selected the channel, and then we'll want to choose Edit Attribute. And now at that point we can go to our follow switch here and rename it. So we'll go to the new name field, and that's going to be FollowChest. Once we hit Enter, everything's good to go. Everything will still work just fine. And there we have it. So in no time at all we have dynamically parented our wheel rig on the robot's back, which is pretty exciting stuff. All right, so let's go ahead and now focus on constraining the spine pieces of the robot. And then following that we just need to build a center of gravity control to finish off the spine. And then we can move on to the neck and head, and get that taken care of.
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.