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536 | Chapter 19 Creating and Editing Surfaces
Working with Surfaces
In this tutorial you’ll learn about these types of surfaces:
■ Primitive, created by specifying values
■ Motion-based, created by moving wires through space
■ Skin, applied over a wireframe
■ Derived, generated from existing surfaces
Primitive surfaces (cone, cylinder, sphere, and torus) do not require wire-
frames for their construction. To create a sphere surface, for example, you
determine the center of the sphere and then enter a value for its radius. Prim-
itive surfaces are most often used for conceptual design.
You can practice creating primitive surfaces on your own by choosing Surface
➤ Create Primitives.
In this tutorial, you’ll practice working with motion-based, skin, and derived
surfaces you create from wireframes. You’ll also work with simple wireframe
geometry to learn surfacing techniques.
After you create each surface, use the Extents option of the
ZOOM command
to redisplay all of the wireframes provided in the drawing file. Then zoom to
enlarge the object you need for the next exercise.