Example usage for org.jfree.chart.annotations XYPolygonAnnotation XYPolygonAnnotation

Introduction

In this page you can find the example usage for org.jfree.chart.annotations XYPolygonAnnotation XYPolygonAnnotation.

Prototype

public XYPolygonAnnotation(double[] polygon, Stroke stroke, Paint outlinePaint) 

Source Link

Document

Creates a new annotation where the box is drawn as an outline using the specified stroke and outlinePaint.

Usage

From source file:projects.wdlf47tuc.ProcessAllSwathcal.java

/**
 * Plots the CMD using the existing dataset. Used whenever chart annotations change, without the
 * underlying plot data changing. This method identifies all sources lying within the boxed region
 * and loads them into the secondary list {@link #boxedSources}.
 * /*from  w  w  w. java 2 s .co m*/
 * @param allSources
 *    The {@link Source}s to plot
 * @return
 *    A JFreeChart presenting the colour-magnitude diagram for the current selection criteria and colours.
 */
private JFreeChart plotCmd() {

    XYSeries outside = new XYSeries("Outside");
    XYSeries inside = new XYSeries("Inside");

    // Use a Path2D.Double instance to determine polygon intersection
    Path2D.Double path = new Path2D.Double();
    boxedSources.clear();

    boolean performBoxSelection = (points.size() > 2);

    if (performBoxSelection) {
        // Initialise Path2D object
        path.moveTo(points.get(0)[0], points.get(0)[1]);
        for (double[] point : points) {
            path.lineTo(point[0], point[1]);
        }
    }

    for (Source source : selectedSources) {
        double magnitude = source.getMag(magFilter);
        double col1 = source.getMag(col1Filter);
        double col2 = source.getMag(col2Filter);

        double x = col1 - col2;
        double y = magnitude;

        if (performBoxSelection) {
            Point2D.Double point = new Point2D.Double(x, y);
            if (path.contains(point)) {
                inside.add(x, y);
                boxedSources.add(source);
            } else {
                outside.add(x, y);
            }
        } else {
            outside.add(x, y);
        }
    }

    final XYSeriesCollection data = new XYSeriesCollection();
    data.addSeries(outside);
    data.addSeries(inside);

    XYLineAndShapeRenderer renderer = new XYLineAndShapeRenderer();
    renderer.setSeriesLinesVisible(0, false);
    renderer.setSeriesShapesVisible(0, true);
    renderer.setSeriesShape(0, new Ellipse2D.Float(-0.5f, -0.5f, 1, 1));
    renderer.setSeriesPaint(0, ChartColor.BLACK);

    renderer.setSeriesLinesVisible(1, false);
    renderer.setSeriesShapesVisible(1, true);
    renderer.setSeriesShape(1, new Ellipse2D.Float(-0.5f, -0.5f, 1, 1));
    renderer.setSeriesPaint(1, ChartColor.RED);

    NumberAxis xAxis = new NumberAxis(col1Filter.toString() + " - " + col2Filter.toString());
    xAxis.setRange(getXRange());

    NumberAxis yAxis = new NumberAxis(magFilter.toString());
    yAxis.setRange(getYRange());
    yAxis.setInverted(true);

    // Configure plot
    XYPlot xyplot = new XYPlot(data, xAxis, yAxis, renderer);
    xyplot.setBackgroundPaint(Color.lightGray);
    xyplot.setDomainGridlinePaint(Color.white);
    xyplot.setDomainGridlinesVisible(true);
    xyplot.setRangeGridlinePaint(Color.white);

    // Specify selection box, if points have been specified
    if (!points.isEmpty()) {

        double[] coords = new double[points.size() * 2];

        for (int i = 0; i < points.size(); i++) {
            double[] point = points.get(i);
            coords[2 * i + 0] = point[0];
            coords[2 * i + 1] = point[1];
        }
        XYPolygonAnnotation box = new XYPolygonAnnotation(coords, new BasicStroke(2.0f), Color.BLUE);
        xyplot.addAnnotation(box);
    }

    // Configure chart
    JFreeChart chart = new JFreeChart("47 Tuc CMD", xyplot);
    chart.setBackgroundPaint(Color.white);
    chart.setTitle("47 Tuc colour-magnitude diagram");
    chart.removeLegend();

    return chart;
}

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