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## org.jfree.chart.renderer.xy
Class XYSplineRenderer

    java.lang.Object
      org.jfree.chart.renderer.AbstractRenderer
          org.jfree.chart.renderer.xy.AbstractXYItemRenderer
              org.jfree.chart.renderer.xy.XYLineAndShapeRenderer
                  org.jfree.chart.renderer.xy.XYSplineRenderer

All Implemented Interfaces:
  java.io.Serializable, java.lang.Cloneable, LegendItemSource, XYItemRenderer, org.jfree.util.PublicCloneable

    public class XYSplineRenderer

extends XYLineAndShapeRenderer

A renderer that connects data points with natural cubic splines and/or draws shapes at each data point. This renderer is designed for use with the `XYPlot` class. The example shown here is generated by the `XYSplineRendererDemo1.java` program included in the JFreeChart demo collection:

Since:
  1.0.7
See Also:
  Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.jfree.chart.renderer.xy.XYLineAndShapeRenderer
`XYLineAndShapeRenderer.State`

Field Summary

Fields inherited from class org.jfree.chart.renderer.AbstractRenderer
`DEFAULT_OUTLINE_PAINT, DEFAULT_OUTLINE_STROKE, DEFAULT_PAINT, DEFAULT_SHAPE, DEFAULT_STROKE, DEFAULT_VALUE_LABEL_FONT, DEFAULT_VALUE_LABEL_PAINT, ZERO`

Constructor Summary
`XYSplineRenderer()` Creates a new instance with the 'precision' attribute defaulting to 5.
`XYSplineRenderer(int precision)` Creates a new renderer with the specified precision.

Method Summary
`protected void` | `drawPrimaryLineAsPath(XYItemRendererState state, java.awt.Graphics2D g2, XYPlot plot, XYDataset dataset, int pass, int series, int item, ValueAxis domainAxis, ValueAxis rangeAxis, java.awt.geom.Rectangle2D dataArea)` Draws the item (first pass).
`boolean` | `equals(java.lang.Object obj)` Tests this renderer for equality with an arbitrary object.
`int` | `getPrecision()` Get the resolution of splines.
`XYItemRendererState` | `initialise(java.awt.Graphics2D g2, java.awt.geom.Rectangle2D dataArea, XYPlot plot, XYDataset data, PlotRenderingInfo info)` Initialises the renderer.
`void` | `setPrecision(int p)` Set the resolution of splines and sends a `RendererChangeEvent` to all registered listeners.

Methods inherited from class org.jfree.chart.renderer.xy.XYLineAndShapeRenderer
`clone, drawFirstPassShape, drawItem, drawPrimaryLine, drawSecondaryPass, getBaseLinesVisible, getBaseShapesFilled, getBaseShapesVisible, getDrawOutlines, getDrawSeriesLineAsPath, getItemLineVisible, getItemShapeFilled, getItemShapeVisible, getLegendItem, getLegendLine, getLinesVisible, getPassCount, getSeriesLinesVisible, getSeriesShapesFilled, getSeriesShapesVisible, getShapesVisible, getUseFillPaint, getUseOutlinePaint, isItemPass, isLinePass, setBaseLinesVisible, setBaseShapesFilled, setBaseShapesVisible, setDrawOutlines, setDrawSeriesLineAsPath, setLegendLine, setLinesVisible, setLinesVisible, setSeriesLinesVisible, setSeriesLinesVisible, setSeriesShapesFilled, setSeriesShapesFilled, setSeriesShapesVisible, setSeriesShapesVisible, setShapesFilled, setShapesFilled, setShapesVisible, setShapesVisible, setUseFillPaint, setUseOutlinePaint`

Methods inherited from class org.jfree.chart.renderer.xy.AbstractXYItemRenderer
`addAnnotation, addAnnotation, addEntity, calculateDomainMarkerTextAnchorPoint, drawAnnotations, drawDomainGridLine, drawDomainLine, drawDomainMarker, drawItemLabel, drawRangeLine, drawRangeMarker, fillDomainGridBand, fillRangeGridBand, findDomainBounds, findDomainBounds, findRangeBounds, findRangeBounds, getAnnotations, getBaseItemLabelGenerator, getBaseToolTipGenerator, getDrawingSupplier, getItemLabelGenerator, getItemLabelGenerator, getLegendItemLabelGenerator, getLegendItems, getLegendItemToolTipGenerator, getLegendItemURLGenerator, getPlot, getSeriesItemLabelGenerator, getSeriesToolTipGenerator, getToolTipGenerator, getToolTipGenerator, getURLGenerator, isPointInRect, removeAnnotation, removeAnnotations, setBaseItemLabelGenerator, setBaseToolTipGenerator, setItemLabelGenerator, setLegendItemLabelGenerator, setLegendItemToolTipGenerator, setLegendItemURLGenerator, setPlot, setSeriesItemLabelGenerator, setSeriesToolTipGenerator, setToolTipGenerator, setURLGenerator, updateCrosshairValues, updateCrosshairValues`

Methods inherited from class org.jfree.chart.renderer.AbstractRenderer
`addChangeListener, calculateLabelAnchorPoint, clearSeriesPaints, clearSeriesStrokes, fireChangeEvent, getAutoPopulateSeriesFillPaint, getAutoPopulateSeriesOutlinePaint, getAutoPopulateSeriesOutlineStroke, getAutoPopulateSeriesPaint, getAutoPopulateSeriesShape, getAutoPopulateSeriesStroke, getBaseCreateEntities, getBaseFillPaint, getBaseItemLabelFont, getBaseItemLabelPaint, getBaseItemLabelsVisible, getBaseLegendShape, getBaseLegendTextFont, getBaseLegendTextPaint, getBaseNegativeItemLabelPosition, getBaseOutlinePaint, getBaseOutlineStroke, getBasePaint, getBasePositiveItemLabelPosition, getBaseSeriesVisible, getBaseSeriesVisibleInLegend, getBaseShape, getBaseStroke, getCreateEntities, getDataBoundsIncludesVisibleSeriesOnly, getDefaultEntityRadius, getItemCreateEntity, getItemFillPaint, getItemLabelAnchorOffset, getItemLabelFont, getItemLabelFont, getItemLabelPaint, getItemLabelPaint, getItemOutlinePaint, getItemOutlineStroke, getItemPaint, getItemShape, getItemStroke, getItemVisible, getLegendShape, getLegendTextFont, getLegendTextPaint, getNegativeItemLabelPosition, getNegativeItemLabelPosition, getPositiveItemLabelPosition, getPositiveItemLabelPosition, getSeriesCreateEntities, getSeriesFillPaint, getSeriesItemLabelFont, getSeriesItemLabelPaint, getSeriesNegativeItemLabelPosition, getSeriesOutlinePaint, getSeriesOutlineStroke, getSeriesPaint, getSeriesPositiveItemLabelPosition, getSeriesShape, getSeriesStroke, getSeriesVisible, getSeriesVisible, getSeriesVisibleInLegend, getSeriesVisibleInLegend, hashCode, hasListener, isItemLabelVisible, isSeriesItemLabelsVisible, isSeriesVisible, isSeriesVisibleInLegend, lookupLegendShape, lookupLegendTextFont, lookupLegendTextPaint, lookupSeriesFillPaint, lookupSeriesOutlinePaint, lookupSeriesOutlineStroke, lookupSeriesPaint, lookupSeriesShape, lookupSeriesStroke, notifyListeners, removeChangeListener, setAutoPopulateSeriesFillPaint, setAutoPopulateSeriesOutlinePaint, setAutoPopulateSeriesOutlineStroke, setAutoPopulateSeriesPaint, setAutoPopulateSeriesShape, setAutoPopulateSeriesStroke, setBaseCreateEntities, setBaseCreateEntities, setBaseFillPaint, setBaseFillPaint, setBaseItemLabelFont, setBaseItemLabelFont, setBaseItemLabelPaint, setBaseItemLabelPaint, setBaseItemLabelsVisible, setBaseItemLabelsVisible, setBaseItemLabelsVisible, setBaseLegendShape, setBaseLegendTextFont, setBaseLegendTextPaint, setBaseNegativeItemLabelPosition, setBaseNegativeItemLabelPosition, setBaseOutlinePaint, setBaseOutlinePaint, setBaseOutlineStroke, setBaseOutlineStroke, setBasePaint, setBasePaint, setBasePositiveItemLabelPosition, setBasePositiveItemLabelPosition, setBaseSeriesVisible, setBaseSeriesVisible, setBaseSeriesVisibleInLegend, setBaseSeriesVisibleInLegend, setBaseShape, setBaseShape, setBaseStroke, setBaseStroke, setCreateEntities, setCreateEntities, setDataBoundsIncludesVisibleSeriesOnly, setDefaultEntityRadius, setFillPaint, setFillPaint, setItemLabelAnchorOffset, setItemLabelFont, setItemLabelFont, setItemLabelPaint, setItemLabelPaint, setItemLabelsVisible, setItemLabelsVisible, setItemLabelsVisible, setLegendShape, setLegendTextFont, setLegendTextPaint, setNegativeItemLabelPosition, setNegativeItemLabelPosition, setOutlinePaint, setOutlinePaint, setOutlineStroke, setOutlineStroke, setPaint, setPaint, setPositiveItemLabelPosition, setPositiveItemLabelPosition, setSeriesCreateEntities, setSeriesCreateEntities, setSeriesFillPaint, setSeriesFillPaint, setSeriesItemLabelFont, setSeriesItemLabelFont, setSeriesItemLabelPaint, setSeriesItemLabelPaint, setSeriesItemLabelsVisible, setSeriesItemLabelsVisible, setSeriesItemLabelsVisible, setSeriesNegativeItemLabelPosition, setSeriesNegativeItemLabelPosition, setSeriesOutlinePaint, setSeriesOutlinePaint, setSeriesOutlineStroke, setSeriesOutlineStroke, setSeriesPaint, setSeriesPaint, setSeriesPositiveItemLabelPosition, setSeriesPositiveItemLabelPosition, setSeriesShape, setSeriesShape, setSeriesStroke, setSeriesStroke, setSeriesVisible, setSeriesVisible, setSeriesVisible, setSeriesVisible, setSeriesVisibleInLegend, setSeriesVisibleInLegend, setSeriesVisibleInLegend, setSeriesVisibleInLegend, setShape, setShape, setStroke, setStroke`

Methods inherited from class java.lang.Object
`finalize, getClass, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface org.jfree.chart.renderer.xy.XYItemRenderer
`addAnnotation, addAnnotation, addChangeListener, drawAnnotations, drawDomainGridLine, drawDomainMarker, drawRangeLine, drawRangeMarker, fillDomainGridBand, fillRangeGridBand, findDomainBounds, findRangeBounds, getBaseItemLabelFont, getBaseItemLabelGenerator, getBaseItemLabelPaint, getBaseItemLabelsVisible, getBaseNegativeItemLabelPosition, getBaseOutlinePaint, getBaseOutlineStroke, getBasePaint, getBasePositiveItemLabelPosition, getBaseSeriesVisible, getBaseSeriesVisibleInLegend, getBaseShape, getBaseStroke, getBaseToolTipGenerator, getItemLabelFont, getItemLabelFont, getItemLabelGenerator, getItemLabelPaint, getItemLabelPaint, getItemOutlinePaint, getItemOutlineStroke, getItemPaint, getItemShape, getItemStroke, getItemVisible, getLegendItemLabelGenerator, getNegativeItemLabelPosition, getNegativeItemLabelPosition, getPlot, getPositiveItemLabelPosition, getPositiveItemLabelPosition, getSeriesItemLabelFont, getSeriesItemLabelGenerator, getSeriesItemLabelPaint, getSeriesNegativeItemLabelPosition, getSeriesOutlinePaint, getSeriesOutlineStroke, getSeriesPaint, getSeriesPositiveItemLabelPosition, getSeriesShape, getSeriesStroke, getSeriesToolTipGenerator, getSeriesVisible, getSeriesVisible, getSeriesVisibleInLegend, getSeriesVisibleInLegend, getToolTipGenerator, getURLGenerator, isItemLabelVisible, isSeriesItemLabelsVisible, isSeriesVisible, isSeriesVisibleInLegend, removeAnnotation, removeAnnotations, removeChangeListener, setBaseItemLabelFont, setBaseItemLabelGenerator, setBaseItemLabelPaint, setBaseItemLabelsVisible, setBaseItemLabelsVisible, setBaseItemLabelsVisible, setBaseNegativeItemLabelPosition, setBaseNegativeItemLabelPosition, setBaseOutlinePaint, setBaseOutlineStroke, setBasePaint, setBasePositiveItemLabelPosition, setBasePositiveItemLabelPosition, setBaseSeriesVisible, setBaseSeriesVisible, setBaseSeriesVisibleInLegend, setBaseSeriesVisibleInLegend, setBaseShape, setBaseStroke, setBaseToolTipGenerator, setItemLabelFont, setItemLabelGenerator, setItemLabelPaint, setItemLabelsVisible, setItemLabelsVisible, setItemLabelsVisible, setLegendItemLabelGenerator, setNegativeItemLabelPosition, setNegativeItemLabelPosition, setOutlinePaint, setOutlineStroke, setPaint, setPlot, setPositiveItemLabelPosition, setPositiveItemLabelPosition, setSeriesItemLabelFont, setSeriesItemLabelGenerator, setSeriesItemLabelPaint, setSeriesItemLabelsVisible, setSeriesItemLabelsVisible, setSeriesItemLabelsVisible, setSeriesNegativeItemLabelPosition, setSeriesNegativeItemLabelPosition, setSeriesOutlinePaint, setSeriesOutlineStroke, setSeriesPaint, setSeriesPositiveItemLabelPosition, setSeriesPositiveItemLabelPosition, setSeriesShape, setSeriesStroke, setSeriesToolTipGenerator, setSeriesVisible, setSeriesVisible, setSeriesVisible, setSeriesVisible, setSeriesVisibleInLegend, setSeriesVisibleInLegend, setSeriesVisibleInLegend, setSeriesVisibleInLegend, setShape, setStroke, setToolTipGenerator, setURLGenerator`

Methods inherited from interface org.jfree.chart.LegendItemSource
`getLegendItems`

Constructor Detail

### XYSplineRenderer

    public XYSplineRenderer()

  Creates a new instance with the 'precision' attribute defaulting to 5.

### XYSplineRenderer

    public XYSplineRenderer(int precision)

  Creates a new renderer with the specified precision.

  Parameters:
    `precision` - the number of points between data items.

Method Detail

### getPrecision

    public int getPrecision()

  Get the resolution of splines.

  Returns:
    Number of line segments between points.
  See Also:
    `setPrecision(int)`

### setPrecision

    public void setPrecision(int p)

  Set the resolution of splines and sends a `RendererChangeEvent` to all registered listeners.

  Parameters:
    `p` - number of line segments between points (must be > 0).
  See Also:
    `getPrecision()`

### initialise

    public XYItemRendererState initialise(java.awt.Graphics2D g2,
                                          java.awt.geom.Rectangle2D dataArea,
                                          XYPlot plot,
                                          XYDataset data,
                                          PlotRenderingInfo info)

  Initialises the renderer.

  This method will be called before the first item is rendered, giving the renderer an opportunity to initialise any state information it wants to maintain. The renderer can do nothing if it chooses.

  Specified by:
    `initialise` in interface `XYItemRenderer`
  Overrides:
    `initialise` in class `XYLineAndShapeRenderer`
  Parameters:
    `g2` - the graphics device.
    `dataArea` - the area inside the axes.
    `plot` - the plot.
    `data` - the data.
    `info` - an optional info collection object to return data back to the caller.
  Returns:
    The renderer state.

### drawPrimaryLineAsPath

    protected void drawPrimaryLineAsPath(XYItemRendererState state,
                                         java.awt.Graphics2D g2,
                                         XYPlot plot,
                                         XYDataset dataset,
                                         int pass,
                                         int series,
                                         int item,
                                         ValueAxis domainAxis,
                                         ValueAxis rangeAxis,
                                         java.awt.geom.Rectangle2D dataArea)

  Draws the item (first pass). This method draws the lines connecting the items. Instead of drawing separate lines, a GeneralPath is constructed and drawn at the end of the series painting.

  Overrides:
    `drawPrimaryLineAsPath` in class `XYLineAndShapeRenderer`
  Parameters:
    `g2` - the graphics device.
    `state` - the renderer state.
    `plot` - the plot (can be used to obtain standard color information etc).
    `dataset` - the dataset.
    `pass` - the pass.
    `series` - the series index (zero-based).
    `item` - the item index (zero-based).
    `domainAxis` - the domain axis.
    `rangeAxis` - the range axis.
    `dataArea` - the area within which the data is being drawn.

### equals

    public boolean equals(java.lang.Object obj)

  Tests this renderer for equality with an arbitrary object.

  Overrides:
    `equals` in class `XYLineAndShapeRenderer`
  Parameters:
    `obj` - the object (`null` permitted).
  Returns:
    A boolean.

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