Volute > Cross Section > Line Segments cross section

The shape of a Line segments cross-section is described by a series of line segments.

One half of the shape of the cross-section is initially based on line segments arranged in a trapezoid shape. Points 1 and 4 are the fix start- and endpoints.

All corner points are connected by line segments.

The coordinates of each point and the related corner radius can be adjusted in the context dialog.

Using the context menu of a line segment, points can be added at the cursor position or be removed

When moving points the following constraints can be enforced by pressing a key on keyboard:

CTRL	Point moves on a circle around the previous point. The radius stays constant while pressed.
CTRL + SHIFT	Point moves on a circle around the next point. The radius stays constant while pressed.
ALT	Point moves on a line between its last position and previous point.
ALT + SHIFT	Point moves on a line between its last position and next point.

The scaling center point is the left (right) inlet point, which is not located on the section center line.