org.jfree.chart.renderer

Class RendererUtilities


public class RendererUtilities
extends java.lang.Object

Utility methods related to the rendering process.
Since:
1.0.6

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 index of the item in the specified series that...

Method Details

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.

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

findLiveItemsUpperBound

public static int findLiveItemsUpperBound(XYDataset dataset,
                                          int series,
                                          double xLow,
                                          double xHigh)
Finds the index of the item in the specified series that...
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