Constructor Detail

• PointSelectionEvent

  public PointSelectionEvent​(java.lang.Object source,
                             java.awt.Point point,
                             int isurf,
                             long[] closestRows)

  Constructor.

  Parameters:

  source - event source

  point - point indicated by the user

  isurf - numeric label of surface to which this event applies

  closestRows - array of dataset row index for each plotted layer

Method Detail

• getPoint

  public java.awt.Point getPoint​()

  Returns the point indicated by the user.

  Returns:

  indicated point

• getSurfaceIndex

  public int getSurfaceIndex​()

  Returns the index of the surface to which this event applies.

  Returns:

  numeric label of surface

• getClosestRows

  public long[] getClosestRows​()

  Returns an array of row indices, one for each plotted layer. Each element contains the index of of the data point plotted in the corresponding PlotLayer closest to the indicated graphics position. If that layer contains no data point within a few pixels of the given position, the corresponding value is -1. For layers without data positions, the corresponding value is always -1.

  The close-enough threshold for a point to be included is given by PlotUtil.NEAR_PIXELS (4.0).

  Note the event may represent no successful selections (all elements of the returned array equal to -1).

  Returns:

  array of data point indices, one for each plotted layer