Create Free Curves on Polygon Meshes
You can manually pick a polygon mesh or spline surface and create free curves at the location of your choice.
Creating free curves
Free curve created by the user can be automatically projected onto polygon meshes and spline surfaces.
The range of a spline surface can be defined with free curves by reference to the polygon mesh curvature display.
Example of defining a spline surface range with free curves.
tag : Free curve creation