Example usage for org.jfree.chart.entity CategoryItemEntity CategoryItemEntity

Introduction

In this page you can find the example usage for org.jfree.chart.entity CategoryItemEntity CategoryItemEntity.

Prototype

public CategoryItemEntity(Shape area, String toolTipText, String urlText, CategoryDataset dataset,
        Comparable rowKey, Comparable columnKey) 

Source Link

Document

Creates a new entity instance for an item in the specified dataset.

Usage

From source file:spinworld.gui.RadarPlot.java

/**
 * Draws a radar plot polygon./*from   w w w .java  2 s . com*/
 *
 * @param g2 the graphics device.
 * @param plotArea the area we are plotting in (already adjusted).
 * @param centre the centre point of the radar axes
 * @param info chart rendering info.
 * @param series the series within the dataset we are plotting
 * @param catCount the number of categories per radar plot
 * @param headH the data point height
 * @param headW the data point width
 */
protected void drawRadarPoly(Graphics2D g2, Rectangle2D plotArea, Point2D centre, PlotRenderingInfo info,
        int series, int catCount, double headH, double headW) {

    Polygon polygon = new Polygon();

    EntityCollection entities = null;
    if (info != null) {
        entities = info.getOwner().getEntityCollection();
    }

    // plot the data...
    for (int cat = 0; cat < catCount; cat++) {

        Number dataValue = getPlotValue(series, cat);

        if (dataValue != null) {
            double value = dataValue.doubleValue();

            // Finds our starting angle from the centre for this axis

            double angle = getStartAngle() + (getDirection().getFactor() * cat * 360 / catCount);

            // The following angle calc will ensure there isn't a top
            // vertical axis - this may be useful if you don't want any
            // given criteria to 'appear' move important than the
            // others..
            //  + (getDirection().getFactor()
            //        * (cat + 0.5) * 360 / catCount);

            // find the point at the appropriate distance end point
            // along the axis/angle identified above and add it to the
            // polygon

            double _maxValue = getMaxValue(cat).doubleValue();
            double _origin = getOrigin(cat).doubleValue();
            double lowerBound = Math.min(_origin, _maxValue);
            double upperBound = Math.max(_origin, _maxValue);
            boolean lesser = value < lowerBound;
            boolean greater = value > upperBound;
            if ((lesser || greater) && !drawOutOfRangePoints) {
                continue;
            }
            if (lesser) {
                value = lowerBound;
            }
            if (greater) {
                value = upperBound;
            }
            double length = _maxValue == _origin ? 0 : (value - lowerBound) / (upperBound - lowerBound);
            if (_maxValue < _origin) { // inversed
                length = 1 - length;
            }
            Point2D point = getWebPoint(plotArea, angle, length);
            polygon.addPoint((int) point.getX(), (int) point.getY());

            Paint paint = getSeriesPaint(series);
            Paint outlinePaint = getSeriesOutlinePaint(series);

            double px = point.getX();
            double py = point.getY();
            g2.setPaint(paint);
            if (lesser || greater) {
                // user crosshair for out-of-range data points distinguish
                g2.setStroke(new BasicStroke(1.5f, BasicStroke.CAP_SQUARE, BasicStroke.JOIN_BEVEL));
                double delta = 3;
                g2.draw(new Line2D.Double(px - delta, py, px + delta, py));
                g2.draw(new Line2D.Double(px, py - delta, px, py + delta));
            } else {
                // put an elipse at the point being plotted..
                Ellipse2D head = new Ellipse2D.Double(px - headW / 2, py - headH / 2, headW, headH);
                g2.fill(head);
                g2.setStroke(getHeadOutlineStroke(series));
                g2.setPaint(outlinePaint);
                g2.draw(head);
            }

            if (entities != null) {
                int row = 0;
                int col = 0;
                if (this.dataExtractOrder == TableOrder.BY_ROW) {
                    row = series;
                    col = cat;
                } else {
                    row = cat;
                    col = series;
                }
                String tip = null;
                if (this.toolTipGenerator != null) {
                    tip = this.toolTipGenerator.generateToolTip(this.dataset, row, col);
                }

                String url = null;
                if (this.urlGenerator != null) {
                    url = this.urlGenerator.generateURL(this.dataset, row, col);
                }

                Shape area = new Rectangle((int) (point.getX() - headW), (int) (point.getY() - headH),
                        (int) (headW * 2), (int) (headH * 2));
                CategoryItemEntity entity = new CategoryItemEntity(area, tip, url, this.dataset,
                        this.dataset.getRowKey(row), this.dataset.getColumnKey(col));
                entities.add(entity);
            }
        }
    }
    // Plot the polygon

    Paint paint = getSeriesPaint(series);
    g2.setPaint(paint);
    g2.setStroke(getSeriesOutlineStroke(series));
    g2.draw(polygon);

    // Lastly, fill the web polygon if this is required

    if (this.webFilled) {
        g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.1f));
        g2.fill(polygon);
        g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, getForegroundAlpha()));
    }
}

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