/**
* Adds a dial scale to the plot and sends a {@link PlotChangeEvent} to all registered listeners.
*
* @param index the scale index.
* @param scale the scale (<code>null</code> not permitted).
*/
public void addScale(int index, DialScale scale) {
ParamChecks.nullNotPermitted(scale, "scale");
DialScale existing = (DialScale) this.scales.get(index);
if (existing != null) {
removeLayer(existing);
}
this.layers.add(scale);
this.scales.set(index, scale);
scale.addChangeListener(this);
fireChangeEvent();
}
/**
* Draws the range.
*
* @param g2 the graphics target.
* @param plot the plot.
* @param frame the dial's reference frame (in Java2D space).
* @param view the dial's view rectangle (in Java2D space).
*/
public void draw(Graphics2D g2, DialPlot plot, Rectangle2D frame, Rectangle2D view) {
Rectangle2D arcRectInner =
DialPlot.rectangleByRadius(frame, this.innerRadius, this.innerRadius);
Rectangle2D arcRectOuter =
DialPlot.rectangleByRadius(frame, this.outerRadius, this.outerRadius);
DialScale scale = plot.getScale(this.scaleIndex);
if (scale == null) {
throw new RuntimeException("No scale for scaleIndex = " + this.scaleIndex);
}
double angleMin = scale.valueToAngle(this.lowerBound);
double angleMax = scale.valueToAngle(this.upperBound);
Arc2D arcInner = new Arc2D.Double(arcRectInner, angleMin, angleMax - angleMin, Arc2D.OPEN);
Arc2D arcOuter = new Arc2D.Double(arcRectOuter, angleMax, angleMin - angleMax, Arc2D.OPEN);
g2.setPaint(this.paint);
g2.setStroke(new BasicStroke(2.0f));
g2.draw(arcInner);
g2.draw(arcOuter);
}
