<< Click to Display Table of Contents >> Line Segments cross section 

The shape of a Line segments crosssection is described by a series of line segments. One half of the shape of the crosssection 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. 