Common Sub-Object Controls
Many controls are common to the various kinds of sub-objects in NURBS models (with the exception of Imports). This topic introduces the controls that are common to most NURBS sub-objects.
Editing Point Sub-Objects
This topic describes the controls for point sub-objects. A rollout labeled Point contains the point sub-object controls for NURBS models. In addition to the Point rollout described here, the Point sub-object level displays the Soft Selection rollout.
Editing Curve CV Sub-Objects
This topic describes the controls for CV sub-objects that lie on curves. A rollout labeled CV contains the CV sub-object controls for NURBS models. In addition to the CV rollout described here, the Curve CV sub-object level displays the Soft Selection rollout.
Editing Surface CV Sub-Objects
This topic describes the controls for CV sub-objects that lie on surfaces. A rollout labeled CV contains the CV sub-object controls for NURBS models. In addition to the CV rollout described here, the Curve CV sub-object level displays the Soft Selection rollout.
Editing Curve Sub-Objects
This topic describes the controls that are common to point and CV curves. A rollout labeled Curve Common contains the curve sub-object controls for NURBS models.
Editing Surface Sub-Objects
This topic describes controls that are common to point surfaces, CV surfaces, and the various dependent surface types. A rollout labeled Surface Common contains the surface sub-object controls for NURBS surfaces. Another rollout, Material Properties, controls mapping on surface sub-objects, and is described in its own topic. See Surface Approximation for a description of that rollout. The final rollout for surface sub-objects depends on the type of surface selected.
Soft Selection Rollout (NURBS)
The soft selection controls for NURBS models are like the soft selection controls for editable mesh objects. Soft selection controls make a point or CV behave as if surrounded by a "magnetic field." Unselected points or CVs within the field are drawn along smoothly while you move the selected one.
Creating Curve Sub-Objects
Curve sub-objects are either independent point and CV curves (similar to the top-level point and CV curves described in Point Curve and CV Curve), or they are dependent curves. Dependent curves are curve sub-objects whose geometry depends on other curves, points, or surfaces in the NURBS object. When you change the geometry of the original, parent sub-objects, the dependent curve changes as well.
Creating Surface Sub-Objects
Surface sub-objects are either independent point and CV surfaces (like the top-level point and CV surfaces described in Point Surface and CV Surface), or they are 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.
Creating and Editing Point Sub-Objects
In addition to the points that are an integral part of point curve and point surface objects, you can create "freestanding" points. Such points can help you construct point curves by using the Curve Fit button. You also use dependent points to trim curves.
NURBS Editing Dialogs
This section describes dialogs that support creating and editing NURBS models.