NURBS Curves

NURBS curves can be created using one of two modes. Specify the NURBS curve degree prior to selecting a mode.

Setting the NURBS Curve Degree

 

To specify the NURBS curve degree:

1.	Click the NURBS Curve tool from the 3D Modeling tool set, and click NURBS Curve Degree Setting from the Tool bar.

2.	The Curve Degree dialog box opens. Specify the curve degree for the NURBS Curve tool to use. Click OK.

Set the degree value to 1 to create a NURBS curve with linear segments (similar to a 3D polygon).

NURBS Curve by Interpolation Point

 

To create a NURBS curve by interpolation point:

1.	Click the NURBS Curve tool from the 3D Modeling tool set, and select NURBS Curve by Interpolation Point mode.

2.	Click to set the first point on the curve.

3.	Click to set the point about which the curve passes through.

4.	Double-click to set the end point of the curve.

Double-clicking ends the operation. To create a multi-curved NURBS curve, continue to click points.

NURBS Curve by Control Point

 

To create a NURBS curve by control point:

1.	Click the NURBS Curve tool from the 3D Modeling tool set, and select NURBS Curve by Control Point mode.

2.	Click to set the first point on the curve.

3.	Click to set the point about which the curve pulls toward but does not touch.

4.	Double-click to set the end point of the curve.

Double-clicking ends the operation. To create a multi-curved NURBS curve, continue to click points.