paint(VisCanvas vc,
java.awt.Graphics2D g,
java.awt.image.BufferedImage bi)
Overriden by each subclass to draw itself onto the provided
graphics context.
void
set(double x,
double y,
double xx,
double xy,
double yy)
Overriden by each subclass to draw itself onto the provided
graphics context. Applications can choose to use either the Graphics2D
(which has the correct transform already set up) or to draw to the
buffered image directly.