Creating Dependent Surfaces

Dependent surfaces are surface sub-objects whose geometry depends on other surfaces or curves in the NURBS model. When you change the geometry of the original, parent surface or curve, the dependent surface changes as well.

You create dependent surfaces using the Create Surfaces rollout in the Modify command panel for a NURBS surface. (The Point Surf and CV Surf buttons create independent surface sub-objects. Click one of these buttons and then drag in a viewport to create the surface, as previously described in "Creating NURBS Surfaces.")

Tip: Loft and extrude surface sub-objects can be based on only a single curve. If you have dependent curves and want to use the set of curves (for example, two parents and a fillet between them) as the basis of an extrude or loft surface, first go to the Curve sub-object level and use Join to connect the curves.

Toolbox Buttons for Creating Surfaces

These are the toolbox buttons for creating surface sub-objects:

Create an independent CV surface.

Create an independent point surface.

Create a dependent transform surface.

Create a dependent blend surface.

Create a dependent offset surface.

Create a dependent mirror surface.

Create a dependent extrude surface.

Create a dependent lathe surface.

Create a dependent ruled surface.

Create a dependent U Loft surface.

Create a dependent cap surface.