public XYAreaRenderer() 
{
             
        this(AREA);
}

Constructs a new renderer.

 public XYAreaRenderer(int type) 
{
        this(type, null, null);
}

Constructs a new renderer.

Parameters:

type - the type of the renderer.

 public XYAreaRenderer(int type,
    XYToolTipGenerator toolTipGenerator,
    XYURLGenerator urlGenerator) 
{
        super();
        setBaseToolTipGenerator(toolTipGenerator);
        setURLGenerator(urlGenerator);
        if (type == SHAPES) {
            this.plotShapes = true;
        }
        if (type == LINES) {
            this.plotLines = true;
        }
        if (type == SHAPES_AND_LINES) {
            this.plotShapes = true;
            this.plotLines = true;
        }
        if (type == AREA) {
            this.plotArea = true;
        }
        if (type == AREA_AND_SHAPES) {
            this.plotArea = true;
            this.plotShapes = true;
        }
        this.showOutline = false;
        GeneralPath area = new GeneralPath();
        area.moveTo(0.0f, -4.0f);
        area.lineTo(3.0f, -2.0f);
        area.lineTo(4.0f, 4.0f);
        area.lineTo(-4.0f, 4.0f);
        area.lineTo(-3.0f, -2.0f);
        area.closePath();
        this.legendArea = area;
}

Constructs a new renderer. To specify the type of renderer, use one of the constants: SHAPES, LINES, SHAPES_AND_LINES, AREA or AREA_AND_SHAPES.

Parameters:

type - the type of renderer.

toolTipGenerator - the tool tip generator to use (null permitted).

urlGenerator - the URL generator (null permitted).

 public Object clone() throws CloneNotSupportedException 
{
        XYAreaRenderer clone = (XYAreaRenderer) super.clone();
        clone.legendArea = ShapeUtilities.clone(this.legendArea);
        return clone;
}

Returns a clone of the renderer.

 public  void drawItem(Graphics2D g2,
    XYItemRendererState state,
    Rectangle2D dataArea,
    PlotRenderingInfo info,
    XYPlot plot,
    ValueAxis domainAxis,
    ValueAxis rangeAxis,
    XYDataset dataset,
    int series,
    int item,
    CrosshairState crosshairState,
    int pass) 
{
        
        if (!getItemVisible(series, item)) {
            return;   
        }
        XYAreaRendererState areaState = (XYAreaRendererState) state;
        // get the data point...
        double x1 = dataset.getXValue(series, item);
        double y1 = dataset.getYValue(series, item);
        if (Double.isNaN(y1)) {
            y1 = 0.0;
        }
        double transX1 = domainAxis.valueToJava2D(x1, dataArea, 
                plot.getDomainAxisEdge());
        double transY1 = rangeAxis.valueToJava2D(y1, dataArea, 
                plot.getRangeAxisEdge());
        // get the previous point and the next point so we can calculate a 
        // "hot spot" for the area (used by the chart entity)...
        int itemCount = dataset.getItemCount(series);
        double x0 = dataset.getXValue(series, Math.max(item - 1, 0));
        double y0 = dataset.getYValue(series, Math.max(item - 1, 0));
        if (Double.isNaN(y0)) {
            y0 = 0.0;
        }
        double transX0 = domainAxis.valueToJava2D(x0, dataArea, 
                plot.getDomainAxisEdge());
        double transY0 = rangeAxis.valueToJava2D(y0, dataArea, 
                plot.getRangeAxisEdge());
        double x2 = dataset.getXValue(series, Math.min(item + 1, 
                itemCount - 1));
        double y2 = dataset.getYValue(series, Math.min(item + 1, 
                itemCount - 1));
        if (Double.isNaN(y2)) {
            y2 = 0.0;
        }
        double transX2 = domainAxis.valueToJava2D(x2, dataArea, 
                plot.getDomainAxisEdge());
        double transY2 = rangeAxis.valueToJava2D(y2, dataArea, 
                plot.getRangeAxisEdge());
        double transZero = rangeAxis.valueToJava2D(0.0, dataArea, 
                plot.getRangeAxisEdge());
        Polygon hotspot = null;
        if (plot.getOrientation() == PlotOrientation.HORIZONTAL) {
            hotspot = new Polygon();
            hotspot.addPoint((int) transZero, 
                    (int) ((transX0 + transX1) / 2.0));
            hotspot.addPoint((int) ((transY0 + transY1) / 2.0), 
                    (int) ((transX0 + transX1) / 2.0));
            hotspot.addPoint((int) transY1, (int) transX1);
            hotspot.addPoint((int) ((transY1 + transY2) / 2.0), 
                    (int) ((transX1 + transX2) / 2.0));
            hotspot.addPoint((int) transZero, 
                    (int) ((transX1 + transX2) / 2.0));
        }
        else {  // vertical orientation
            hotspot = new Polygon();
            hotspot.addPoint((int) ((transX0 + transX1) / 2.0), 
                    (int) transZero);
            hotspot.addPoint((int) ((transX0 + transX1) / 2.0), 
                    (int) ((transY0 + transY1) / 2.0));
            hotspot.addPoint((int) transX1, (int) transY1);
            hotspot.addPoint((int) ((transX1 + transX2) / 2.0), 
                    (int) ((transY1 + transY2) / 2.0));
            hotspot.addPoint((int) ((transX1 + transX2) / 2.0), 
                    (int) transZero);
        }
        if (item == 0) {  // create a new area polygon for the series
            areaState.area = new Polygon();
            // the first point is (x, 0)
            double zero = rangeAxis.valueToJava2D(0.0, dataArea, 
                    plot.getRangeAxisEdge());
            if (plot.getOrientation() == PlotOrientation.VERTICAL) {
                areaState.area.addPoint((int) transX1, (int) zero);
            }
            else if (plot.getOrientation() == PlotOrientation.HORIZONTAL) {
                areaState.area.addPoint((int) zero, (int) transX1);
            }
        }
        // Add each point to Area (x, y)
        if (plot.getOrientation() == PlotOrientation.VERTICAL) {
            areaState.area.addPoint((int) transX1, (int) transY1);
        }
        else if (plot.getOrientation() == PlotOrientation.HORIZONTAL) {
            areaState.area.addPoint((int) transY1, (int) transX1);
        }
        PlotOrientation orientation = plot.getOrientation();
        Paint paint = getItemPaint(series, item);
        Stroke stroke = getItemStroke(series, item);
        g2.setPaint(paint);
        g2.setStroke(stroke);
        Shape shape = null;
        if (getPlotShapes()) {
            shape = getItemShape(series, item);
            if (orientation == PlotOrientation.VERTICAL) {
                shape = ShapeUtilities.createTranslatedShape(shape, transX1, 
                        transY1);
            }
            else if (orientation == PlotOrientation.HORIZONTAL) {
                shape = ShapeUtilities.createTranslatedShape(shape, transY1, 
                        transX1);
            }
            g2.draw(shape);
        }
        if (getPlotLines()) {
            if (item  > 0) {
                if (plot.getOrientation() == PlotOrientation.VERTICAL) {
                    areaState.line.setLine(transX0, transY0, transX1, transY1);
                }
                else if (plot.getOrientation() == PlotOrientation.HORIZONTAL) {
                    areaState.line.setLine(transY0, transX0, transY1, transX1);
                }
                g2.draw(areaState.line);
            }
        }
        // Check if the item is the last item for the series.
        // and number of items  > 0.  We can't draw an area for a single point.
        if (getPlotArea() && item  > 0 && item == (itemCount - 1)) {
            if (orientation == PlotOrientation.VERTICAL) {
                // Add the last point (x,0)
                areaState.area.addPoint((int) transX1, (int) transZero);
            }
            else if (orientation == PlotOrientation.HORIZONTAL) {
                // Add the last point (x,0)
                areaState.area.addPoint((int) transZero, (int) transX1);
            }
            g2.fill(areaState.area);
            // draw an outline around the Area.
            if (isOutline()) {
                g2.setStroke(getItemOutlineStroke(series, item));
                g2.setPaint(getItemOutlinePaint(series, item));
                g2.draw(areaState.area);
            }
        }
        int domainAxisIndex = plot.getDomainAxisIndex(domainAxis);
        int rangeAxisIndex = plot.getRangeAxisIndex(rangeAxis);
        updateCrosshairValues(crosshairState, x1, y1, domainAxisIndex, 
                rangeAxisIndex, transX1, transY1, orientation);
        // collect entity and tool tip information...
        EntityCollection entities = state.getEntityCollection();
        if (entities != null && hotspot != null) {
            addEntity(entities, hotspot, dataset, series, item, 0.0, 0.0);
        }
}

Draws the visual representation of a single data item.

 public boolean equals(Object obj) 
{
        if (obj == this) {
            return true;   
        }
        if (!(obj instanceof XYAreaRenderer)) {
            return false;   
        }
        XYAreaRenderer that = (XYAreaRenderer) obj;
        if (this.plotArea != that.plotArea) {
            return false;   
        }
        if (this.plotLines != that.plotLines) {
            return false;   
        }
        if (this.plotShapes != that.plotShapes) {
            return false;   
        }
        if (this.showOutline != that.showOutline) {
            return false;   
        }
        if (!ShapeUtilities.equal(this.legendArea, that.legendArea)) {
            return false;   
        }
        return true;
}

Tests this renderer for equality with an arbitrary object.

 public Shape getLegendArea() 
{
        return this.legendArea;
}

Returns the shape used to represent an area in the legend.

 public LegendItem getLegendItem(int datasetIndex,
    int series) 
{
        LegendItem result = null;
        XYPlot xyplot = getPlot();
        if (xyplot != null) {
            XYDataset dataset = xyplot.getDataset(datasetIndex);
            if (dataset != null) {
                XYSeriesLabelGenerator lg = getLegendItemLabelGenerator();
                String label = lg.generateLabel(dataset, series);
                String description = label;
                String toolTipText = null;
                if (getLegendItemToolTipGenerator() != null) {
                    toolTipText = getLegendItemToolTipGenerator().generateLabel(
                            dataset, series);
                }
                String urlText = null;
                if (getLegendItemURLGenerator() != null) {
                    urlText = getLegendItemURLGenerator().generateLabel(
                            dataset, series);
                }
                Paint paint = lookupSeriesPaint(series);
                result = new LegendItem(label, description, toolTipText, 
                        urlText, this.legendArea, paint);
                result.setDataset(dataset);
                result.setDatasetIndex(datasetIndex);
                result.setSeriesKey(dataset.getSeriesKey(series));
                result.setSeriesIndex(series);
            }
        }
        return result;
}

Returns a default legend item for the specified series. Subclasses should override this method to generate customised items.

 public boolean getPlotArea() 
{
        return this.plotArea;
}

Returns true if Area is being plotted by the renderer.

 public boolean getPlotLines() 
{
        return this.plotLines;
}

Returns true if lines are being plotted by the renderer.

 public boolean getPlotShapes() 
{
        return this.plotShapes;
}

Returns true if shapes are being plotted by the renderer.

 public XYItemRendererState initialise(Graphics2D g2,
    Rectangle2D dataArea,
    XYPlot plot,
    XYDataset data,
    PlotRenderingInfo info) 
{
        XYAreaRendererState state = new XYAreaRendererState(info);
        // in the rendering process, there is special handling for item 
        // zero, so we can't support processing of visible data items only
        state.setProcessVisibleItemsOnly(false);
        return state;
}

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

 public boolean isOutline() 
{
        return this.showOutline;
}

Returns a flag that controls whether or not outlines of the areas are drawn.

 public  void setLegendArea(Shape area) 
{
        if (area == null) {
            throw new IllegalArgumentException("Null 'area' argument.");   
        }
        this.legendArea = area;
        fireChangeEvent();
}

Sets the shape used as an area in each legend item and sends a RendererChangeEvent to all registered listeners.

 public  void setOutline(boolean show) 
{
        this.showOutline = show;
        fireChangeEvent();
}

Sets a flag that controls whether or not outlines of the areas are drawn and sends a RendererChangeEvent to all registered listeners.