The ChangeDegree command changes the of the polynomial that defines the curve or surface by adding or subtracting between spans, while maintaining the structure.
- the objects.
- Type a degree value.
For surfaces type values in the u and v .
If the degree of the curve/surface is different from the requested , the new curve/surface will have simple interior .
If the degree of the curve/surface is LESS than the requested degree, the new curve/surface will have exactly the same geometry and as the original, but it will have knots of multiplicity = old multiplicity + new degree - old degree.
If the degree of the curve/surface is GREATER than the requested degree, the new curve/surface will be an approximation of the original with simple .
- The ChangeDegree command changes the of the polynomial Rhino uses to create the curve. It keeps the structure of the curves the same, but it adds or subtracts between each knot span.
- Often it is better to use InsertKnot and RemoveKnot instead of ChangeDegree, because you can add/remove control points more locally.
- To make the surface have the same geometry, but more for editing, increase the degree to 5 with the Deformable option set to No. In this case, consider using the InsertKnot command, which will add but leave the degree unchanged.
- When exporting geometry to another application, make every attempt to keep the of your surfaces low. In particular, many mechanical CAD systems cannot import surfaces that have degrees greater than 3.
- The number of added or subtracted depends on the ; the higher the degree, the greater the number of control points.
- If the of a surface is raised with Deformable=No, the surface will no longer be periodic. Use MakePeriodic to restore the periodicity of the surface.
- Objects with higher take longer to display and use more memory.
Rhino for Mac © 2010-2017 Robert McNeel & Associates. 24-Oct-2017