IPointFinder (JChart2D API documentation, Version 3.2.2)

All Known Implementing Classes:

Chart2D.PointFinder
```
public interface IPointFinder
```
Interface for finding a ITracePoint2D of a Chart2D corresponding to a mouse event.
This is used to allow a pluggable strategy for this task which is needed by point highlighting and/or tool tips.

Author:

Achim Westermann

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`ITracePoint2D`	`getNearestPoint(int mouseEventX, int mouseEventY, Chart2D chart)`	Returns the nearest `ITracePoint2D` to the given mouse event's screen coordinates.
`ITracePoint2D`	`getNearestPoint(java.awt.event.MouseEvent me, Chart2D chart)`	Returns the nearest `MouseEvent` to the given mouse event's screen coordinates or `null` if no point was found / service is not implemented.

- Method Detail
  - getNearestPoint
```
ITracePoint2D getNearestPoint(int mouseEventX,
                              int mouseEventY,
                              Chart2D chart)
```
    Returns the nearest ITracePoint2D to the given mouse event's screen coordinates.
    
    Parameters:
    
    mouseEventX - the x pixel value relative to the chart (e.g.: MouseEvent.getY()).
    
    mouseEventY - the y pixel value relative to the chart (e.g.: MouseEvent.getY()).
    
    chart - to search points within.
    
    Returns:
    
    the nearest ITracePoint2D to the given mouse event's screen coordinates.
  - getNearestPoint
```
ITracePoint2D getNearestPoint(java.awt.event.MouseEvent me,
                              Chart2D chart)
```
    Returns the nearest MouseEvent to the given mouse event's screen coordinates or null if no point was found / service is not implemented.
    Simple implementations could use Manhattan distance or Euclid distance.
    
    Parameters:
    
    me - the mouse event over the chart.
    
    chart - to search points within.
    
    Returns:
    
    e nearest MouseEvent to the given mouse event's screen coordinates or null if no point was found / service is not implemented.