Open Spline Curve |
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Closed Spline Curve |
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Name
Specify the unique name for the spline.
Curve
Select the curve to which this spline item will be assigned from the list of previously defined curves or enter a new name.
Points frame
In this frame you can edit, insert or delete control points of the spline. If the spline is open (the first and the last control points are different), the curve actually passes through the first and last control points. The curve tangents at these points are then given by the first and last edges of the control point polygon. If the spline is closed, the curve does not pass through any control point at all.
X, Y or U, V: In these fields you enter new control point coordinates or edit the coordinates of a previously selected control point. Each of these entries must be either a simple numerical value or a valid expression.
Relative to previous: Check here if you want to define the control point coordinates relatively to the previously entered control point.
Insert: Inserts a new control point into the list above the currently selected control point. You can then specify the coordinates of the new control point in the X, Y or U,V fields.
Delete: Deletes the currently selected control point from the list.
Import/Export: Press this button to get Load From... and Save As... options.
Load From...: Opens a file selector dialog to specify a two column ASCII file containing point coordinates X,Y or U,V. The separator of the columns can be space, tab, comma or semicolon.
Save As...: Opens a file save dialog to save point coordiantes to a two column ASCII file.
Clear: Deletes all control points from the list.
OK
Press this button to finally create the spline.
Cancel
Closes this dialog box without performing any further action.
Help
Shows this help text.
See also
Curve Creation, Line, Circle, Ellipse, Arc, Rectangle, Polygon, 3D Polygon, Analytical Curve, Selected Edges to Curve, Chamfer Curve, Blend Curve