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Draws open and closed splines in 2D and 3D.
Accessing the Command
command bar: spline
alias: spl
menu bar: Draw | Spline
toolbar: Draw | 
: Spline
Prompts you in the command bar:
First point for spline: (Pick a point, or enter x,y,z coordinates)
Second point: (Pick another point)
Set next point or [Close/Fit tolerance/Undo]: (Pick another point, or enter an option)
Set next point or [Close/Fit tolerance/Undo]: (Pick another point, enter an option, or press Enter to end drawing the spline and move on to specifying the tangent points)
Select starting tangent point: (Pick a point, or press Enter for no starting tangent)
Enter tangent for ending point: (Pick a point, or press Enter for no ending tangent)
Command Options
|
Option |
Description |
|
First point for spline |
Specifies the start of the tangent:
|
|
Second point |
Specifies the first vertex of the spline:
|
|
Next point |
Specifies the next vertex.
This prompt repeats until you press Enter. |
|
Close |
Closes the spline; the end and start points are joined.
To open or close an existing spline, follow these steps:
|
|
Undo |
Undraws the last portion drawn. |
|
Fit tolerance |
Specifies how closely the spline matches its vertices (also known as "fit points"); prompts you: Enter fit tolerance (in drawing units) - (enter an value:)
|
|
Select starting tangent point |
Locates a tangency for the starting point; press Enter to ignore this option |
|
Enter tangent for ending point |
Locates a tangency for the ending point; press Enter to ignore this option |
Grips Editing
Open and closed splines can be edited directly through grips. Splines can be grip edited either with fit points or control vertices. Choose either Fit points or Control vertices from the Method property options of a spline in the Properties Panel. The CV Frame property of the spline controls whether the control vertices frame displays or not.
Method = Fit points
Method = Control Vertices; CV Frame = Off
Method = Control Vertices; CV Frame = ON
-
Select the spline. Notice that it has one grip at each fit point or control vertex.
-
Drag a grip to stretch the spline.
Procedures
Related Command
PEdit - turns polylines into splines.
Splinedit - modifies the properties of a spline or converses a spline to a polyline.
Helix - Creates a 2D spiral or a 3D helix.
