Microsoft KB Archive/153878

= Microsoft Knowledge Base =

How to Pierce 3D Models with NURBS Curves
Last reviewed: September 3, 1996

Article ID: Q153878

The information in this article applies to:


 * Softimage 3D for IRIX, version 3.50

SUMMARY
When you want to pierce a 3D model in Softimage 3D, you have to use NURBS curves.

Here is an example to illustrate this function:


 * 1) In the Model module, use the Get->Primitive->Sphere function. You can select any kind of curve (Linear, Cubic, Quadratic, or NURBS) for your primitive sphere. This is the model you want to pierce.
 * 2) Use the Draw->Curve->NURBS function to draw on your model, and use the Draw->Open/Close function to complete the hole on the surface of your model. You need to draw a hole only on one side of the model.
 * 3) Select the model.
 * 4) Use the Draw->Trim function on the NURBS Surface.
 * 5) Click anywhere on the circumference of the hole you have drawn with NURBS curves.
 * 6) In the Trim NURBS Surface pop-up menu, select the axis on which you wish to pierce the model (x, y, z, or User direction), select the Remove option under Operation, and click OK.

The model is pierced through on the axis you specified.