/** Plots this graph on the specified canvas using the provided Graphics object. */
public void plot(Component canvas, Graphics g) {
try {
g.setColor(this.color);
int numPoints = this.getNumberOfPoints();
Point oldp = null, newp;
for (int i = 0; i < numPoints; i++, oldp = newp) {
newp = this.getPoint(canvas, i);
// draw accent circle around next point, if applicable
if (accentPoints) g.drawOval(newp.x - 2, newp.y - 2, 4, 4);
// draw line segment connecting previous point to next point, if
// applicable (note: it's never applicable if this is the very
// first point)
if (i != 0 && connectPattern.isConnected(i)) g.drawLine(oldp.x, oldp.y, newp.x, newp.y);
// highlight this point, if applicable
if (i == this.getHighlightedPoint()) {
g.drawOval(newp.x - 4, newp.y - 4, 8, 8);
g.drawOval(newp.x - 5, newp.y - 5, 10, 10);
}
}
} catch (IndexOutOfBoundsException ex) {
// do nothing. Due to threading issues, it's possible that the
// data may suddenly change or even vanish in the middle of
// plotting. In this case, we abort, and trust that the
// application will make sure plot gets called again once the
// data is back in a consistent state.
}
}
/** Sets the ConnectPattern for this graph. */
public void setConnectPattern(ConnectPattern cp) {
if (!cp.equals(this.connectPattern)) {
this.connectPattern = cp;
this.setChanged(CONNECT_PATTERN_CHANGE);
}
}
