Spline Shapes

The Spline shape is a shape created by interpolating a sequence of points using the Cubic Spline interpolation method.

The Spline shape is non-destructive and the points remain editable with the Node tool. The Spline shape has no additional parameters. To create actual curves from the shape, use the Convert to Curves command.

Drawing Spline Shapes

Spline shapes can be drawn using the Spline tool from the application toolbox:

Select the Interpolated Points tool from the toolbox.
Click with the mouse to place the first point of the shape.
Move the mouse to the position of the next point and click+drag to place the next point.
Repeat the above point placement sequence using the tool.
The points will be interpolated using rhe cubic spline interpolations.
All points will be on the shape.

The Spline shape is a non-destructive shape using the cubic splint interpolation method, the interpolation points can be adjusted by the user.

Editing Spline Shapes

The Node tool can be used to interactively edit the points of the Spline shape:

Select the object with a Spline shape.
Select the Node tool from the application toolbox.
The points of the shape and lines connecting these points are shown as an indicator.
Drag the shape points in a similar way as when editing paths.
To insert a new point, click on the inner part of a line connecting two points and press the Plus key.
To remove a point, select the point with the node tool and press the Delete key.