Import DataDoctor > Geometry Creation Tools > Creating Datum Curves > To Create a UV-Curve by Intersection
  
To Create a UV-Curve by Intersection
1. Select a surface in the graphics window or on the GTS tree. This surface is the primary reference.
2. Click the arrow next to UV-Curves on the Create tab and click UV-Curve by Intersection. The UV-Curve By Intersection tab opens and the selected surface or datum plane is added to the Surface collector.
3. Select a surface or a datum plane that intersects the surface or the datum plane that you selected as the primary reference.
 
• You can select two intersecting surfaces as references. However, you cannot select two intersecting datum planes.
• The first reference selected, that is, the reference that is listed first in the selection bin before activating the UV-Curve by Intersection option is the primary surface reference that the curve is created on. If you want to create a curve on a surface by intersecting a plane, you must select the surface and then the plane.
• You cannot remove or change the primary reference in the Surface collector. To change the primary reference quit the UV-Curve by Intersection tool, select another primary reference, and enter the tool again.
4. Click on the UV-Curve By Intersection tab to create the curve at the intersection of the selected references.