Example usage for org.jfree.chart.renderer.xy XYBlockRenderer initialise

Introduction

In this page you can find the example usage for org.jfree.chart.renderer.xy XYBlockRenderer initialise.

Prototype

@Override
public XYItemRendererState initialise(Graphics2D g2, Rectangle2D dataArea, XYPlot plot, XYDataset data,
        PlotRenderingInfo info) 

Source Link

Document

Initialises the renderer and returns a state object that should be passed to all subsequent calls to the drawItem() method.

Usage

From source file:net.sf.maltcms.chromaui.charts.FastHeatMapPlot.java

/**
 *
 * @param xyz//w  ww .ja  va  2  s.co m
 * @param sl
 * @param spm
 * @param xybr
 * @param activeGraphics
 * @param dataArea
 * @param info
 * @param crosshairState
 * @return
 */
public BufferedImage prepareData(final XYZDataset xyz, final int sl, final int spm, final XYBlockRenderer xybr,
        Graphics2D activeGraphics, Rectangle2D dataArea, PlotRenderingInfo info,
        CrosshairState crosshairState) {
    long start = System.currentTimeMillis();
    final PaintScale ps = xybr.getPaintScale();
    double minz = Double.POSITIVE_INFINITY, maxz = Double.NEGATIVE_INFINITY;

    for (int i = 0; i < xyz.getSeriesCount(); i++) {
        final int items = xyz.getItemCount(i);
        for (int j = 0; j < items; j++) {
            minz = Math.min(xyz.getZValue(i, j), minz);
            maxz = Math.max(xyz.getZValue(i, j), maxz);
        }
    }
    if (ps instanceof GradientPaintScale) {
        ((GradientPaintScale) ps).setUpperBound(maxz);
        ((GradientPaintScale) ps).setLowerBound(minz);
    }
    Logger.getLogger(getClass().getName()).log(Level.INFO, "Finding min and max data took{0}ms",
            (System.currentTimeMillis() - start));

    //        VolatileImage bi = null;
    //        if (bi == null) {
    //        if (this.getOrientation() == PlotOrientation.VERTICAL) {
    BufferedImage bi = createCompatibleImage(sl, spm, BufferedImage.TRANSLUCENT);
    //        } else {
    //            bi = createCompatibleImage(spm, sl);
    //        }
    //        }else{
    //            img.validate(g.getDeviceConfiguration())
    //        }

    Graphics2D g2 = (Graphics2D) bi.getGraphics();
    g2.setColor((Color) ps.getPaint(ps.getLowerBound()));
    g2.fillRect(0, 0, sl, spm);
    // System.out.println("Using Threshold: " + threshold);
    int height = bi.getHeight();
    //final WritableRaster wr = bi.getRaster();
    XYItemRendererState xyrs = xybr.initialise(g2, dataArea, this, xyz, info);
    for (int i = 0; i < xyz.getSeriesCount(); i++) {
        final int items = xyz.getItemCount(i);
        for (int j = 0; j < items; j++) {
            final double tmp = xyz.getZValue(i, j);
            if (tmp > this.threshholdCutOff) {
                //if(j%50==0)System.out.println("Value > threshold: "+tmp);
                final Paint p = ps.getPaint(tmp);
                //                    final Paint tp = ps.getPaint(this.threshholdCutOff);
                //                    if (!tp.equals(p)) {
                if (p instanceof Color) {
                    final Color c = (Color) p;
                    g2.setColor(c);
                    //                    xybr.drawItem(g2, xyrs, dataArea, info, this, domainAxis, rangeAxis, xyz, i, j, crosshairState, 0);
                    //                        if (this.getOrientation() == PlotOrientation.VERTICAL) {

                    g2.fillRect((int) xyz.getXValue(i, j), height - (int) xyz.getYValue(i, j), 1, 1);
                    //                            wr.setPixel(, , new int[]{c.getRed(),
                    //                                        c.getGreen(), c.getBlue(), c.getAlpha()});
                    //                        } else {
                    //                            wr.setPixel((int) xyz.getYValue(i, j), (int) xyz.getXValue(i, j), new int[]{c.getRed(),
                    //                                        c.getGreen(), c.getBlue(), c.getAlpha()});
                    //                        }
                    //                }
                    //                    }
                }
            }
        }
    }

    Logger.getLogger(getClass().getName()).log(Level.INFO, "Creating image and drawing items took {0}ms",
            (System.currentTimeMillis() - start));

    return bi;
}

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