Any of a piece’s segments can be turned into a curve by accessing the Turn to curve function. The selection can be carried out on the segment directly or by using the selection rectangle in the working space.
The resulted curve is formed by:
– 2 end points
– 2 control points that are defining the curve shape
Between an end point and its corresponding control point, there is a line that represents the tangent to the curve on the endpoint.
To reshape the curve select the section or on one of the curve end points, to display the tangent and then click on the control point and drag it, as in the video below.