NURBS Surface Properties

The properties of a NURBS surface are displayed in the Object Info palette, where they can also be edited. NURBS surfaces can also be reshaped with the 3D Reshape tool; see Reshaping 3D Objects for more information.

 

Parameter	Description
Move	Select Entire Object to edit all the vertices of the surface, Vertex Only to edit only the selected vertex, U Vertices to edit all of the vertices in a row in the U direction, and V Vertices to edit all of the vertices in a row in the V direction
Edit U/V	Scrolls through the vertices of the selected NURBS surface in either the U parametric direction or V parametric direction
X, Y, Z / I, J, K	Depending on the selection in the Move list, displays the position of the current surface or vertex; edit the values to change the surface/vertex position
U Degree	Degree in the U parametric direction; increasing this value adds vertices that can then be manipulated
V Degree	Degree in the V parametric direction; increasing this value adds vertices that can then be manipulated
Weight	NURBS curves and surfaces are represented mathematically by weighted control points. The weight value can be anywhere between .01 and 100. A weight above 1 pulls the curve or surface toward the control point; a weight below 1 has the reverse effect.
Reverse Normal	Flips the surface normal direction
Untrim	Creates a NURBS surface, if the surface has been trimmed
NURBS Surface parameters (display only)	Displays the NURBS surface parameters
Show Vertices	Select to display the surface’s vertices
Show Normal	Displays the surface normal as a red arrow for the selected NURBS surface