Constructor Detail

• VisibilityAnalyst

  public VisibilityAnalyst()

Method Detail

• getAnalystSetting

  public static GridAnalystSetting getAnalystSetting()

  Gets the raster analysis settings

  Returns:

  The settings of raster analyses

• setAnalystSetting

  public static void setAnalystSetting(GridAnalystSetting gridAnalystSetting)

  Sets the raster analysis settings

  Parameters:

  gridAnalystSetting - The raster analysis settings

• isVisible

  public static VisibleResult isVisible(DatasetGrid sourceDataset,
                                        Point3D fromPoint,
                                        Point3D toPoint)

  Whether it is visible from one point to another point

  Parameters:

  sourceDataset - The raster data used for the calculation of the visibility

  fromPoint - The starting point of the calculation

  toPoint - The ending point of the calculation

  Returns:

  the visible object

• lineOfSight

  public static GeoLine[] lineOfSight(DatasetGrid sourceDataset,
                                      Point3D fromPoint,
                                      Point3D toPoint)

  The sight line analysis

  Parameters:

  sourceDataset - The raster data used for the sight line analysis

  fromPoint - The starting point of the sight line analysis

  toPoint - The ending point of the sight line analysis

  Returns:

  Return the analysis result. The first line object is the visible line, and the second line is invisible (it could be null)

• isVisible

  public static VisibleResult[] isVisible(DatasetGrid sourceDataset,
                                          Point3Ds fromPoints,
                                          Point3Ds toPoints)

  Whether they are visible from multiple points to multiple points

  Parameters:

  sourceDataset - The raster data used for the calculation of the visibility

  fromPoints - The starting point collection

  toPoints - The ending point of the calculation

  Returns:

  Multiple points and multiple result datasets. If there are m observation points and n observed points, the result array is m*n

• calculateViewShed

  public static DatasetGrid calculateViewShed(DatasetGrid sourceDataset,
                                              Point3D viewPoint,
                                              double startAngle,
                                              double viewAngle,
                                              double viewRadius,
                                              Datasource targetDatasource,
                                              java.lang.String targetDatasetName)

  Single-point viewshed analysis

  Parameters:

  sourceDataset - The raster data used for the calculation of the viewshed

  viewPoint - The observation position

  startAngle - The starting angle (rotating from the due north in a clockwise direction) of the observation position.

  viewAngle - The observed angle

  viewRadius - The view range less than 0 means no limitations

  targetDatasource - Output datasource.

  targetDatasetName - The target dataset name.

  Returns:

  the visible area of the observation point

• calculateViewShed

  public static DatasetGrid calculateViewShed(DatasetGrid sourceDataset,
                                              Point3Ds viewPoints,
                                              double[] startAngles,
                                              double[] viewAngles,
                                              double[] viewRadiuses,
                                              Datasource targetDatasource,
                                              java.lang.String targetDatasetName,
                                              ViewShedType viewShedType)

  Multiple-points viewshed analysis

  Parameters:

  sourceDataset - The raster data used for the calculation of the viewshed

  viewPoints - The collection of observation positions

  startAngles - The collection of starting angles (rotating from the due north in a clockwise direction) of the observation position.

  viewAngles - The collection of observation angles

  viewRadiuses - The collection of view ranges (less than 0 means no limitations)

  targetDatasource - Output datasource.

  targetDatasetName - The target dataset name.

  viewShedType - viewshed types

  Returns:

  the common areas viewed in multiple observation positions

• addSteppedListener

  public static void addSteppedListener(SteppedListener Listener)

  Add the time listener of the progress bar

  Parameters:

  Listener - the time listener of the progress bar

• removeSteppedListener

  public static void removeSteppedListener(SteppedListener Listener)

  Remove the time listener of the progress bar

  Parameters:

  Listener - the time listener of the progress bar