Off PCurve tab

Use this tab to insert ppoints by changing the shape of the pcurve.

The following example illustrates the options on this dialog.

Position of new ppoint — This defines the position of the new ppoint in the pcurve. For example, if you enter 3, the new ppoint becomes 3 and the original ppoints from 3 onwards are renumbered.

There are two ways to insert ppoints using this page of the dialog:

• Parametric — This inserts a ppoint into the pcurve at the T and U parameters on the surface.

  In this example, you want to insert a new ppoint at T = 3 and U = 4 .

  

  To make the new ppoint lie between ppoints 4 and 5, you need to enter 5 in the Position box. The result is shown below:

  

• Geometric — This enters a ppoint at the position on the surface nearest to the specified point.

  Enter the X Y Z coordinates, or click the Position button to open the Position dialog, where you can use position entry tools.

  Note: You can also enter a position by clicking on the screen.

  For example:

  1. Enter the X, Y, Z coordinates. In the following example, the entered coordinates match the following position :

     

  2. To make the new ppoint lie between ppoints 2 and 3, enter 3 in the Position box. The result is shown in below: