Method Detail

• getCount

  public int getCount()

  Returns the count of geometric objects in the tracking layer.

  Returns:

  The count of geometric objects in this tracking layer.

  Default:

  The default value is 0.

• isVisible

  public boolean isVisible()

  Returns whether the tracking layer is visible, with true indicating visible and false indicating not visible.

  Returns:

  True or false indicating whether the tracking layer is visible.

  Default:

  The default value is true.

• setVisible

  public void setVisible(boolean value)

  Sets whether the tracking layer is visible, with true indicating visible and false indicating not visible.

  Parameters:

  value - True or false indicating whether the tracking layer is visible.

• isSymbolScalable

  public boolean isSymbolScalable()

  Returns whether the size of the symbol in the tracking layer changes with the map zoom. True means the size changes with the map zoom. When the map zooms in, symbols will also zoom in at the same time.

  Returns:

  True or false indicating whether the size of the symbol in the tracking layer changes with the map zoom.

  Default:

  The default value is false.

• add

  public int add(Geometry geometry,
                 java.lang.String tag)

  Adds a geometric object to this TrackingLayer, and gives the tag of this geometric object.

  Parameters:

  geometry - The Geometry object to be added.

  tag - The label of the geometric instance to be added.

  Returns:

  The geometry object index added to the tracking layer, namely, the ID of this geometry object.

  Example:

  Please see the sample of TextStyle.

• addLabel

  public boolean addLabel(java.lang.String name,
                          TextStyle style,
                          boolean visible,
                          boolean tail)

  Adds the field created by the users to the tracking layer to display.

  Parameters:

  name - The field name created by users.

  style - The text style of the added field.

  visible - Whether the added filed is visible. True represents visible; Otherwise, false.

  tail - Whether the added label position is the previous layer or the next layer. true is the previous layer and false is the next layer.

  Returns:

  True if successful; otherwise, false.

• createUserFieldDouble

  public boolean createUserFieldDouble(java.lang.String name,
                                       int size,
                                       int attr)

  The user field information that creates Double field type in the current tracking layer.

  Parameters:

  name - Creates name of the field.

  size - Creates length of the field.

  attr - Creates the attribute of field and the default value is 0.

  Returns:

  True, if successful; Otherwise false.

• createUserFieldInt

  public boolean createUserFieldInt(java.lang.String name,
                                    int size,
                                    int attr)

  The user field information that creates Int field type in the current tracking layer.

  Parameters:

  name - Creates name of the field.

  size - Creates length of the field.

  attr - Creates the attribute of field and the default value is 0.

  Returns:

  True, if successful; Otherwise false.

• createUserFieldString

  public boolean createUserFieldString(java.lang.String name,
                                       int size,
                                       int attr)

  The user field information that creates String field type in the current tracking layer.

  Parameters:

  name - Creates name of the field.

  size - Creates length of the field.

  attr - Creates the attribute of field and the default value is 0.

  Returns:

  True, if successful; Otherwise false.

• deleteAllFeatures

  public void deleteAllFeatures()

  Deletes all the attribute information of the tracking layer field, including the geometry objects and field information in tracking layer, and the attribute table is still exist.

• deleteUserField

  public boolean deleteUserField(java.lang.String fieldname)

  Deletes the field of the specified name in tracking layer.

  Parameters:

  fieldname - The field name to be deleted.

  Returns:

  Returns true if successful; otherwise false.

• flushBulkEdit

  public boolean flushBulkEdit()

  Conducts the batch update to the tracking layer.

  Returns:

  Returns true If successful; otherwise false.

• GetEvent

  public int GetEvent(java.lang.String tag)

  Gets the index of the geometric object with the specified label in this TrackingLayer.

  Parameters:

  tag - The label of the geometric instance.

  Returns:

  The ID of the Geometry object.

• getFieldDouble

  public double getFieldDouble(int index,
                               java.lang.String fieldname)

  Gets the Double filed value of the specified field name of the specified ID in the tracking layer.

  Parameters:

  index - The specified ID

  fieldname - The name of the specified field.

  Returns:

  Field value.

• getFieldInt

  public int getFieldInt(int index,
                         java.lang.String fieldname)

  Gets the Int filed value of the specified field name of the specified ID in the tracking layer.

  Parameters:

  index - The specified ID

  fieldname - The name of the specified field.

  Returns:

  Field value.

• getFieldString

  public java.lang.String getFieldString(int index,
                                         java.lang.String fieldname)

  Gets the String filed value of the specified field name of the specified ID in the tracking layer.

  Parameters:

  index - The specified ID

  fieldname - The name of the specified field.

  Returns:

  Field value.

• getFieldInfo

  public FieldInfo getFieldInfo(java.lang.String fieldname)

  Gets the field information of the specified field name in the tracking layer.

  Parameters:

  fieldname - The name of the specified field.

  Returns:

  The field information.

• getFieldInfos

  public FieldInfos getFieldInfos()

  Gets the FieldInfos in the tracking layer.

  Returns:

  The FieldInfos.

• getFieldName

  public java.lang.String getFieldName(int index)

  Gets the field name of the specified field ID crested by user in the tracking layer.

  Parameters:

  index - The field ID crested by user.

  Returns:

  The name of the field.

• labelMoveUp

  public boolean labelMoveUp(java.lang.String tag)

  Brings the field of the specified name in tracking layer up.

  Parameters:

  tag - The name of the specified label.

  Returns:

  True, if successful; Otherwise false.

• labelMoveDown

  public boolean labelMoveDown(java.lang.String tag)

  Brings the field of the specified name in tracking layer down.

  Parameters:

  tag - The name of the specified label.

  Returns:

  True, if successful; Otherwise false.

• labelMoveBottom

  public boolean labelMoveBottom(java.lang.String tag)

  Brings the field of the specified name in tracking layer to the bottom.

  Parameters:

  tag - The name of the specified label.

  Returns:

  True if successful; Otherwise, false.

• labelMoveTop

  public boolean labelMoveTop(java.lang.String tag)

  Brings the field of the specified name in tracking layer to the top.

  Parameters:

  tag - The name of the specified label.

  Returns:

  True if successful; Otherwise, false.

• remove

  public boolean remove(int index)

  Deletes the geometric object with the given index in the current TrackingLayer.

  Parameters:

  index - The ID of the geometric object to be deleted.

  Returns:

  returns true if successful; otherwise false.

• removeLabel

  public boolean removeLabel(java.lang.String fieldname)

  Removes the field displayed in current tracking layer.

  Parameters:

  fieldname - The field name of Value to delete.

  Returns:

  returns true if successful; otherwise false.

• setEditBulk

  public boolean setEditBulk(boolean bulkon)

  Starts the bulk update in the current tracking layer.

  Parameters:

  bulkon - A bool, true means opened and otherwise false.

  Returns:

  Returns true if bulkon is true; Otherwise false.

• setFieldDouble

  public boolean setFieldDouble(java.lang.String fieldname,
                                double dVar)

  Sets the Double value of the specified name field of the newly added point object in this tracking layer.

  Parameters:

  fieldname - The name of the specified field.

  dVar - The value of the specified field.

  Returns:

  True if successful; otherwise, false.

• setFieldDoubleEx

  public boolean setFieldDoubleEx(java.lang.String fieldname,
                                  double dVar,
                                  int index)

  Sets the Double value of the specified field of the specified record in the tracking layer.

  Parameters:

  fieldname - The name of the specified field.

  dVar - The value of the specified field.

  index - The specified ID

  Returns:

  True if successful; otherwise, false.

• setFieldInt

  public boolean setFieldInt(java.lang.String fieldname,
                             int iVar)

  Sets the Int value of the specified name field of the newly added point object in this tracking layer.

  Parameters:

  fieldname - The name of the specified field.

  iVar - The value of the specified field.

  Returns:

  True if successful; otherwise, false.

• setFieldIntEx

  public boolean setFieldIntEx(java.lang.String fieldname,
                               int iVar,
                               int index)

  Sets the Int value of the specified field of the specified record in the tracking layer.

  Parameters:

  fieldname - The name of the specified field.

  iVar - The value of the specified field.

  index - The specified ID

  Returns:

  True if successful; otherwise, false.

• setFieldString

  public boolean setFieldString(java.lang.String fieldname,
                                java.lang.String strVar)

  Sets the String value of the specified name field of the newly added point object in this tracking layer.

  Parameters:

  fieldname - The name of the specified field.

  strVar - The value of the specified field.

  Returns:

  True if successful; otherwise, false.

• setFieldStringEx

  public boolean setFieldStringEx(java.lang.String fieldname,
                                  java.lang.String strVar,
                                  int index)

  Sets the String value of the specified field of the specified record in the tracking layer.

  Parameters:

  fieldname - The name of the specified field.

  strVar - The value of the specified field.

  index - The specified ID

  Returns:

  True if successful; otherwise, false.

• setLabelCaption

  public boolean setLabelCaption(java.lang.String fieldname,
                                 java.lang.String Caption)

  Sets the label alias of the specified name in tracking layer.

  Parameters:

  fieldname - The name of the specified field.

  Caption - The label alias after modified.

  Returns:

  True if successful; otherwise, false.

• setLabelOffset

  public boolean setLabelOffset(java.lang.String fieldname,
                                short x,
                                short y)

  Sets the specified field offset of the specified name in the tracking layer.

  Parameters:

  fieldname - The name of the specified field.

  x - The offset in x, the unit is the same with the map.

  y - The offset in y, the unit is the same with the map.

  Returns:

  True, if set successfully; Otherwise false.

• setLabelTextStyle

  public boolean setLabelTextStyle(java.lang.String fieldname,
                                   TextStyle style)

  Sets the field label text style of the specified name as the specified style in this tracking layer.

  Parameters:

  fieldname - The name of the specified field.

  style - The specified style of the text.

  Returns:

  True, if set successfully; Otherwise false.

• setLabelVisible

  public boolean setLabelVisible(java.lang.String fieldname,
                                 boolean visible)

  Sets whether the field label of the specified name is visible in tracking layer.

  Parameters:

  fieldname - The name of the specified field.

  visible - A boolean, true means visible; Otherwise false.

  Returns:

  Returns true if visible is true; Otherwise false.

• setSymbolOffset

  public void setSymbolOffset(short x,
                              short y)

  Sets the specified offset of geometry object in the tracking layer.

  Parameters:

  x - The offset on x direction.

  y - The offset on x direction.

• get

  public Geometry get(int id)

  Returns the geometric object with the specified index in this tracking layer.

  Parameters:

  id - The ID of the geometric instance to be returned.

  Returns:

  The geometry object of the specified ID.

• set

  public boolean set(int index,
                     Geometry geometry)

  Replaces the geometric object at the specified index in the TrackingLayer with the specified geometric object and removes the original geometric object.

  Parameters:

  index - The label of the geometric instance to be replaced.

  geometry - The new Geometry object to replace.

  Returns:

  True, if successful; Otherwise false.

• getTag

  public java.lang.String getTag(int index)

  Returns the tag of geometric object with the specified ID in this tracking layer.

  Parameters:

  index - The index of the geometric instance label to be returned.

  Returns:

  The tag of the Geometry object with the specified index in the tracking layer.

• setTag

  public boolean setTag(int index,
                        java.lang.String tag)

  Sets the tag of geometric object with the specified ID in this tracking layer.

  Parameters:

  index - The index of the geometric instance label to be set.

  tag - The label of the geometric instance.

  Returns:

  True if successful; otherwise, false.

• clear

  public void clear()

  Clears all the geometric objects in the tracking layer.

• hitTest

  public int hitTest(Point2D point2D,
                     double tolerance)

  Returns the ID of the geometric objects that meet the condition. If the distance of the nearest point on the geometric from the point to be tested is within the specified tolerance, then the ID of the geometric object is returned. -1 will be returned if there are not geometric objects meeting the condition in the tracking layer. The ID of the topmost geometric object will be returned if there are multiple overlapped geometric objects that satisfy the condition.

  Parameters:

  point2D - Point to be tested and it is the geographic coordinates.

  tolerance - The specified tolerance is teh geographic length.

  Returns:

  The ID of the Geometry object.

• hitTestEx

  public int hitTestEx(Point point,
                       int tolerance)

  Returns the ID of the geometric objects that meet the condition. If the distance of the nearest point on the geometric from the point to be tested is within the specified tolerance, then the ID of the geometric object is returned. -1 will be returned if there are not geometric objects meeting the condition in the tracking layer. The ID of the topmost geometric object will be returned if there are multiple overlapped geometric objects that satisfy the condition.

  Parameters:

  point - Point to be tested and it is the geographic coordinates.

  tolerance - The specified tolerance is the screen distance.

  Returns:

  The ID of the Geometry object.

• indexOf

  public int indexOf(java.lang.String tag)

  Returns the ID of the first geometric object which is identical with the specified tag.

  Parameters:

  tag - The label requiring to check the index.

  Returns:

  The ID of the first geometric object which is identical with the specified tag.

• setShowGuideLine

  public void setShowGuideLine(boolean bShow,
                               GeoLineM[] routes,
                               Point2D start,
                               Point2D end)

  Sets whether to display the guide lines of the starting point and the ending point

  Parameters:

  bShow - whether to show

  routes - returns the resulting routes object collection

  start - user sets the starting point

  end - user sets the ending point

• setGuideLineStyle

  public void setGuideLineStyle(GeoStyle style)

  Sets the style of the guide line. The default line is dotted. States before using the method setShowGuideLine()

  Parameters:

  style - Style

• setAsyncRefresh

  public void setAsyncRefresh(boolean bAsync)

  Sets whether to render the tracing layer instantly

  Parameters:

  bAsync - whether to render instantly. True is by default. If you set false, the application will render the tracing layers hierarchically, which improves the rendering efficiency of tracing layers of big data

• isAsyncRefresh

  public boolean isAsyncRefresh()

  Returns whether to render the tracing layer instantly

  Returns:

  whether to render the trancing layer instantly

• hitTestAll

  public int[] hitTestAll(Point2D point,
                          double tolerance)

  Returns all ids of geometry objects that meet the criteria. If the specified point is within the specified tolerance range from the nearest point on the geometry object, the ID of the geometry object is returned If there is no matching geometry in the trace layer, -1 is returned If there are multiple overlapping geometric objects on the map that meet the criteria, the ID of the topmost geometric object is returned

  Parameters:

  point2D - the point to be tested is the geographic coordinate point

  tolerance - specifies the geographical length

  Returns:

  array of geometric object ids

• hitTestExAll

  public int[] hitTestExAll(Point point,
                            int tolerance)

  Returns all ids of geometry objects that meet the criteria. If the specified point is within the specified tolerance range from the nearest point on the geometry object, the ID of the geometry object is returned If there is no matching geometry in the trace layer, -1 is returned If there are multiple overlapping geometric objects on the map that meet the criteria, the ID of the topmost geometric object is returned

  Parameters:

  point - Specifies the screen coordinate point to be tested.

  tolerance - Specifies the tolerance of screen distance.

  Returns:

  array of geometric object ids

• refresh

  public void refresh()

  Track layer refreshes