Spline

Works with BricsCAD (Windows) Classic, Pro and Platinum, BricsCAD (Linux) Classic, Pro and Platinum

Draws open and closed splines.

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 coordinates.)

Second point: (Pick another point.)

Close/Fit tolerance/<Next point>: (Pick another point, or enter an option.)

Close/Fit tolerance/<Next point>: (Pick another point, enter an option, or press Enter to end the spline.)

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.)

Use grips to edit splines.

Command Options

Option	Description
First point for spline	Specifies the start of the tangent. Pick a point, or enter x,y coordinates.
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/close an existing spline: Select the spline, then edit the Close property in the Properties Bar.
Fit tolerance	Specifies how closely the spline matches its vertices (also known as "fit points"); prompts you: Enter fit tolerance (in drawing units) - enter 0 or a larger number. 0 - spline passes through fit points. More than 0 - spline passes further away from fit points.
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.

Procedures

Drawing splines

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 or Control vertices from the Method property options of a spline in the Properties Bar. The CV Frame property of the spline controls whether the control vertices frame displays or not.

Method = Fit

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.

Related Command

PEdit - turns polylines into splines.