KNOT
- Last UpdatedJan 05, 2024
- 1 minute read
Purpose
To insert or remove knots from the current curve.
Syntax
|
KNOT INSERT ( /CURSOR ) |
Description
This command is used in conjunction with the ADJUST command which is used to make local modifications to the current curve. Since the ADJUST command only changes up to four spans in the current curve it can been determined that adding new Knots in the curve will further localise any changes made to the curve using the ADJUST command. the converse is true if Knots are removed.
During Knot insertion or removal every effort is made to maintain the shape of the curve however when removing some Knots this will obviously not be possible.
Command Qualifiers
|
/CURSOR |
Use the graphics cursor to select the point for insertion of the Knot to be removed. |
|
/U=$N |
The position of the new Knot is interpolated from the current curve at the given |
|
/V=$N |
U or V value. |
|
/P=$N |
Insert the new Knot at the given B-Spline parameter value. This requires the user to be familiar with the mathematics of curves. |
|
/TOL=$N |
Remove all possible knots from the spline provided the maximum movement is no greater than the specific tolerance. |
Examples
|
KNOT REMOVE |