relativeLine(to:)
Appends a straight line segment to the path starting at the current point and moving towards the specified point, relative to the current location.
Declaration
func relativeLine(to point: NSPoint)Parameters
- point:
A point whose coordinates are interpreted as a relative offset from the current point.
Discussion
The destination point is relative to the current point. For example, if the current point is (1, 1) and aPoint contains the value (1, 2), a line segment is created between the points (1, 1) and (2, 3).
You must set the path’s current point (using the move(to:) method or through the creation of a preceding line or curve segment) before you invoke this method. If the path is empty, this method raises an genericException exception.