xyboxandwhiskerrenderer.java

java图形利器

            }
        }

        Paint p = getBoxPaint();
        if (p != null) {
            g2.setPaint(p);
        }
        Stroke s = getItemStroke(series, item);

        g2.setStroke(s);

        // draw the upper shadow
        g2.draw(new Line2D.Double(xx, yyMax, xx, yyQ3Median));
        g2.draw(new Line2D.Double(xx - width / 2, yyMax, xx + width / 2, 
                yyMax));

        // draw the lower shadow
        g2.draw(new Line2D.Double(xx, yyMin, xx, yyQ1Median));
        g2.draw(new Line2D.Double(xx - width / 2, yyMin, xx + width / 2, 
                yyMin));
        
        // draw the body
        Shape box = null;
        if (yyQ1Median > yyQ3Median) {
            box = new Rectangle2D.Double(xx - width / 2, yyQ3Median, width, 
                    yyQ1Median - yyQ3Median);
        }
        else {
            box = new Rectangle2D.Double(xx - width / 2, yyQ1Median, width, 
                    yyQ3Median - yyQ1Median);
        }
        if (this.fillBox) {
            g2.fill(box);   
        }
        g2.draw(box);

        // draw median
        g2.setPaint(getArtifactPaint());
        g2.draw(new Line2D.Double(xx - width / 2, yyMedian, xx + width / 2, 
                yyMedian));

        double aRadius = 0;                 // average radius
        double oRadius = width / 3;    // outlier radius

        // draw average - SPECIAL AIMS REQUIREMENT
        if (yAverage != null) {
            aRadius = width / 4;
            Ellipse2D.Double avgEllipse = new Ellipse2D.Double(xx - aRadius, 
                    yyAverage - aRadius, aRadius * 2, aRadius * 2);
            g2.fill(avgEllipse);
            g2.draw(avgEllipse);
        }

        List outliers = new ArrayList();
        OutlierListCollection outlierListCollection 
                = new OutlierListCollection();

        /* From outlier array sort out which are outliers and put these into 
         * an arraylist. If there are any farouts, set the flag on the 
         * OutlierListCollection
         */

        for (int i = 0; i < yOutliers.size(); i++) {
            double outlier = ((Number) yOutliers.get(i)).doubleValue();
            if (outlier > boxAndWhiskerData.getMaxOutlier(series, 
                    item).doubleValue()) {
                outlierListCollection.setHighFarOut(true);
            } 
            else if (outlier < boxAndWhiskerData.getMinOutlier(series, 
                    item).doubleValue()) {
                outlierListCollection.setLowFarOut(true);
            } 
            else if (outlier > boxAndWhiskerData.getMaxRegularValue(series, 
                    item).doubleValue()) {
                yyOutlier = rangeAxis.valueToJava2D(outlier, dataArea, 
                        location);
                outliers.add(new Outlier(xx, yyOutlier, oRadius));
            }
            else if (outlier < boxAndWhiskerData.getMinRegularValue(series, 
                    item).doubleValue()) {
                yyOutlier = rangeAxis.valueToJava2D(outlier, dataArea, 
                        location);
                outliers.add(new Outlier(xx, yyOutlier, oRadius));
            }
            Collections.sort(outliers);
        }

        // Process outliers. Each outlier is either added to the appropriate 
        // outlier list or a new outlier list is made
        for (Iterator iterator = outliers.iterator(); iterator.hasNext();) {
            Outlier outlier = (Outlier) iterator.next();
            outlierListCollection.add(outlier);
        }

        // draw yOutliers
        double maxAxisValue = rangeAxis.valueToJava2D(rangeAxis.getUpperBound(),
                dataArea, location) + aRadius;
        double minAxisValue = rangeAxis.valueToJava2D(rangeAxis.getLowerBound(),
                dataArea, location) - aRadius;

        // draw outliers
        for (Iterator iterator = outlierListCollection.iterator(); 
                iterator.hasNext();) {
            OutlierList list = (OutlierList) iterator.next();
            Outlier outlier = list.getAveragedOutlier();
            Point2D point = outlier.getPoint();

            if (list.isMultiple()) {
                drawMultipleEllipse(point, width, oRadius, g2);
            } 
            else {
                drawEllipse(point, oRadius, g2);
            }
        }

        // draw farout
        if (outlierListCollection.isHighFarOut()) {
            drawHighFarOut(aRadius, g2, xx, maxAxisValue);
        }

        if (outlierListCollection.isLowFarOut()) {
            drawLowFarOut(aRadius, g2, xx, minAxisValue);
        }
        
        // add an entity for the item...
        if (entities != null && box.intersects(dataArea)) {
            addEntity(entities, box, dataset, series, item, xx, yyAverage);
        }

    }

    /**
     * Draws an ellipse to represent an outlier.
     * 
     * @param point  the location.
     * @param oRadius  the radius.
     * @param g2  the graphics device.
     */
    protected void drawEllipse(Point2D point, double oRadius, Graphics2D g2) {
        Ellipse2D.Double dot = new Ellipse2D.Double(point.getX() + oRadius / 2,
                point.getY(), oRadius, oRadius);
        g2.draw(dot);
    }

    /**
     * Draws two ellipses to represent overlapping outliers.
     * 
     * @param point  the location.
     * @param boxWidth  the box width.
     * @param oRadius  the radius.
     * @param g2  the graphics device.
     */
    protected void drawMultipleEllipse(Point2D point, double boxWidth, 
                                       double oRadius, Graphics2D g2) {
                                         
        Ellipse2D.Double dot1 = new Ellipse2D.Double(point.getX() 
                - (boxWidth / 2) + oRadius, point.getY(), oRadius, oRadius);
        Ellipse2D.Double dot2 = new Ellipse2D.Double(point.getX() 
                + (boxWidth / 2), point.getY(), oRadius, oRadius);
        g2.draw(dot1);
        g2.draw(dot2);
        
    }

    /**
     * Draws a triangle to indicate the presence of far out values.
     * 
     * @param aRadius  the radius.
     * @param g2  the graphics device.
     * @param xx  the x value.
     * @param m  the max y value.
     */
    protected void drawHighFarOut(double aRadius, Graphics2D g2, double xx, 
            double m) {
        double side = aRadius * 2;
        g2.draw(new Line2D.Double(xx - side, m + side, xx + side, m + side));
        g2.draw(new Line2D.Double(xx - side, m + side, xx, m));
        g2.draw(new Line2D.Double(xx + side, m + side, xx, m));
    }

    /**
     * Draws a triangle to indicate the presence of far out values.
     * 
     * @param aRadius  the radius.
     * @param g2  the graphics device.
     * @param xx  the x value.
     * @param m  the min y value.
     */
    protected void drawLowFarOut(double aRadius, Graphics2D g2, double xx, 
            double m) {
        double side = aRadius * 2;
        g2.draw(new Line2D.Double(xx - side, m - side, xx + side, m - side));
        g2.draw(new Line2D.Double(xx - side, m - side, xx, m));
        g2.draw(new Line2D.Double(xx + side, m - side, xx, m));
    }

    /**
     * Tests this renderer for equality with another object.
     *
     * @param obj  the object (<code>null</code> permitted).
     *
     * @return <code>true</code> or <code>false</code>.
     */
    public boolean equals(Object obj) {
        if (obj == this) {
            return true;
        }
        if (!(obj instanceof XYBoxAndWhiskerRenderer)) {
            return false;
        }
        if (!super.equals(obj)) {
            return false;
        }
        XYBoxAndWhiskerRenderer that = (XYBoxAndWhiskerRenderer) obj;
        if (this.boxWidth != that.getBoxWidth()) {
            return false;
        }
        if (!PaintUtilities.equal(this.boxPaint, that.boxPaint)) {
            return false;
        }
        if (!PaintUtilities.equal(this.artifactPaint, that.artifactPaint)) {
            return false;
        }
        if (this.fillBox != that.fillBox) {
            return false;
        }
        return true;

    }

    /**
     * Provides serialization support.
     *
     * @param stream  the output stream.
     *
     * @throws IOException  if there is an I/O error.
     */
    private void writeObject(ObjectOutputStream stream) throws IOException {
        stream.defaultWriteObject();
        SerialUtilities.writePaint(this.boxPaint, stream);
        SerialUtilities.writePaint(this.artifactPaint, stream);
    }

    /**
     * Provides serialization support.
     *
     * @param stream  the input stream.
     *
     * @throws IOException  if there is an I/O error.
     * @throws ClassNotFoundException  if there is a classpath problem.
     */
    private void readObject(ObjectInputStream stream) 
        throws IOException, ClassNotFoundException {

        stream.defaultReadObject();
        this.boxPaint = SerialUtilities.readPaint(stream);
        this.artifactPaint = SerialUtilities.readPaint(stream);
    }

    /**
     * Returns a clone of the renderer.
     * 
     * @return A clone.
     * 
     * @throws CloneNotSupportedException  if the renderer cannot be cloned.
     */
    public Object clone() throws CloneNotSupportedException {
        return super.clone();
    }

}