drawLink abstract method
Draws a smooth link from source to target.
sourceUpper
The location of the upper link at the source node.
sourceLower
The location of the lower link at the source node.
targetUpper
The location of the upper link at the target node.
targetLower
The location of the lower link at the target node.
fill
The fill color for the link.
orientation
Orientation enum of the link, vertical or horizontal.
Implementation
void drawLink(Link link, LinkOrientation orientation, Color fill);