Microsoft KB Archive/152588

= Microsoft Knowledge Base =

How To Convert Quadratic NURBS to Cubic NURBS
Last reviewed: June 25, 1996

Article ID: Q152588

The information in this article applies to:


 * Softimage 3D for Windows NT, versions 3.00 and 3.01
 * Softimage 3D for IRIX, versions 3.00 and 3.50

SUMMARY
It is possible to convert a Quadratic NURBS curve to a Cubic NURBS curve.

MORE INFORMATION
Successfully convert a Quadratic NURBS curve to a Cubic NURBS curve as follows:


 * 1) Convert a Quadratic NURBS curve to a B-Spline. Make sure to keep the

control points.

NOTE: This function works poorly if Keep Curve is selected in Effect -> Convert so be sure to select Keep Control Points instead.


 * 1) Convert back to NURBS. The scaling is slightly off, but good results

are possible after only slight tweaking.