ParallelLine
Calculates the points to form a new line parallel line offset Distance from the original, specified by p1 and p2, then returns the new points in variables p3 and p4.
Syntax:
Procedure: ParallelLine(p1x, p1y, p2x, p2y, Distance: Double; var p3x: Double; var p3y: Double; var p4x: Double; var p4y: Double);
API Call: