Join Adam Crespi for an in-depth discussion in this video Writing expressions for the wheels, part of Vehicle Rigging in Maya.
- View Offline
Once you have the car parented and moving as a static object, you can think about…the expressions for the wheels. We want to use an expression for the…wheels that makes them roll on the road as we pull the master control forward.…What I need to do is solve for some kind of rotation for one forward unit of…movement on my Master Control. When I pull on the x axis, those wheels…should spin automatically. When I had made my original Nurbcircles…for the wheel, I had made one and not deleted the history and then cloned it around.…
The clones don't have a radius, but in the original control front left, the first one…I made. The makeNurbCircle1 tab has that radius,…13.165 inches. What I'm going to do then is use the…circumference of the wheel to figure out what one increment of rotation is per…forward unit movement of the car. Here's how this looks.…I've switched calculator over to a scientific view, just because there's a pi…button there. We can go under View and Scientific to…pull that up. Now I'll get the circumference.…
Note: Some experience with polygonal modeling in Maya and beginning knowledge of rigging and constraints will help you get the most from this course.
- Opening and accessing the model
- Scaling a model uniformly
- Creating and cloning controllers
- Parenting the tires and hubs
- Controlling the suspension
- Stitching the rig together
- Writing expressions for the wheels, steering, and body
- Adding brake lights and turn signal controls
- Creating chrome, rubber, and glass shaders
- Applying interior finishes