Menu Structure: Techniques

This menu item provides you with a few advanced features of this system. These include knot insertion, degree elevation and curve subdivision. All of these options apply to the current curve.

• Degree Elevation
  This will increase the degree of the current curve by one without changing the shape of curve. See Degree Elevation for the details.

• Curve Subdivision
  This will subdivide the current curve at a specific value of u. See Curve Subdivision for the details.

• Knot Insertion
  This will insert a new knot into the knot vector of the current curve without changing the shape of the curve. See Knot Insertion for the details.

• Knot Splitting
  This will split a multiple knot into two, one being a simple knot while the other being the original knot with multiplicity decreased by one. Note that this option will change the shape of the current curve slightly. See Knot Splitting for the details.

The next five menu items are used with Cross Section Design for generating ruled surfaces, surfaces of revolution, swung surfaces, swept surfaces and skinned surfaces. See A User Guide to the Surface Subsystem of DesignMentor for the details.