User Guide
User Guide
User Guide

Drop B-spline Curve


Use it!

Used to convert a B-spline curve to lines, a line string, a stream curve, arcs or points.

Drop B-Spline Curves Tool Settings

  
Tool SettingEffect
Keep Original

If on, the original B-spline curve is retained.

Drop To

Sets the element type to which the identified B-spline curve is converted.

  • Line String
  • — The B-spline curve is dropped to a line string.
  • Lines
  • — The B-spline curve is dropped to a number of connected lines.
  • Stream Curve
  • — The B-spline curve is dropped to a stream curve.
  • Arcs
  • — The B-spline curve is dropped to a number of connected arcs.
  • Points
  • — The B-spline curve is dropped to a number of points.
Method

Sets how the dropped element is constructed.

  • Number of Points
  • — The B-spline curve is evaluated evenly in the parameter space by the Number value.
  • Equal Arc Length
  • — The B-spline curve is evaluated evenly along the arc. Each segment has the same arc length, as defined by the value for Number.
  • Equal Chord Length
  • — The B-spline curve is evaluated at a given number of points such that the distance between each successive point is the same.
  • Fixed Chord Length
  • — The distance between each pair of successive points evaluated is the same as the chord length.
  • Chord Height
  • — The maximum chord height for all of the line segments is less than the Chord Height.
Number

Sets the:

  • Number of points when Method is set to Number of Points.

  • Arc length when Method is set to Equal Arc Length.

Chord Height

Sets the maximum chord height when Method is set to Chord Height.

Chord Length

Sets the chord length when Method is set to Fixed Chord Length.

To drop a B-spline curve
  1. Select the Drop B-spline Curve tool.

  2. Identify the B-spline curve.

  3. Accept the drop.

Key-in: DROP CURVE