org.jfree.chart.renderer
Class RendererUtilities

java.lang.Object
  org.jfree.chart.renderer.RendererUtilities

public class RendererUtilities
extends java.lang.Object

Utility methods related to the rendering process.

Since:

1.0.6

Constructor Summary

RendererUtilities()

Method Summary

static int[]	findLiveItems(XYDataset dataset, int series, double xLow, double xHigh) Finds a range of item indices that is guaranteed to contain all the x-values from x0 to x1 (inclusive).
static int	findLiveItemsLowerBound(XYDataset dataset, int series, double xLow, double xHigh) Finds the lower index of the range of live items in the specified data series.
static int	findLiveItemsUpperBound(XYDataset dataset, int series, double xLow, double xHigh) Finds the upper index of the range of live items in the specified data series.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RendererUtilities

public RendererUtilities()

Method Detail

findLiveItemsLowerBound

public static int findLiveItemsLowerBound(XYDataset dataset,
                                          int series,
                                          double xLow,
                                          double xHigh)

Finds the lower index of the range of live items in the specified data series.

Parameters:

dataset - the dataset (null not permitted).

series - the series index.

xLow - the lowest x-value in the live range.

xHigh - the highest x-value in the live range.

Returns:

The index of the required item.

Since:

1.0.6

See Also:

findLiveItemsUpperBound(XYDataset, int, double, double)

findLiveItemsUpperBound

public static int findLiveItemsUpperBound(XYDataset dataset,
                                          int series,
                                          double xLow,
                                          double xHigh)

Finds the upper index of the range of live items in the specified data series.

Parameters:

dataset - the dataset (null not permitted).

series - the series index.

xLow - the lowest x-value in the live range.

xHigh - the highest x-value in the live range.

Returns:

The index of the required item.

Since:

1.0.6

See Also:

findLiveItemsLowerBound(XYDataset, int, double, double)

findLiveItems

public static int[] findLiveItems(XYDataset dataset,
                                  int series,
                                  double xLow,
                                  double xHigh)

Finds a range of item indices that is guaranteed to contain all the x-values from x0 to x1 (inclusive).

Parameters:

dataset - the dataset (null not permitted).

series - the series index.

xLow - the lower bound of the x-value range.

xHigh - the upper bound of the x-value range.

Returns:

The indices of the boundary items.