Image overlays

MapType interface

google.maps.MapType interface

This interface defines the map type, and is typically used for custom map types. Immutable.

Properties
maxZoom	Type:  number The maximum zoom level for the map when displaying this MapType. Required for base MapTypes, ignored for overlay MapTypes.
minZoom	Type:  number The minimum zoom level for the map when displaying this MapType. Optional; defaults to 0.
radius	Type:  number Radius of the planet for the map, in meters. Optional; defaults to Earth's equatorial radius of 6378137 meters.
tileSize	Type:  Size The dimensions of each tile. Required.
alt optional	Type:  string optional Alt text to display when this MapType's button is hovered over in the MapTypeControl. Optional.
name optional	Type:  string optional Name to display in the MapTypeControl. Optional.
projection optional	Type:  Projection optional The Projection used to render this MapType. Optional; defaults to Mercator.

Methods
getTile	getTile(tileCoord, zoom, ownerDocument) Parameters:  tileCoord:  Point Tile coordinates. zoom:  number Tile zoom. ownerDocument:  Document The document which owns this tile. Return Value:  Element|null Resulting tile. Returns a tile for the given tile coordinate (x, y) and zoom level. This tile will be appended to the given ownerDocument. Not available for base map types.
releaseTile	releaseTile(tile) Parameters:  tile:  Element optional Tile to release. Return Value:  None Releases the given tile, performing any necessary cleanup. The provided tile will have already been removed from the document. Optional.

Projection interface

google.maps.Projection interface

Methods
fromLatLngToPoint	fromLatLngToPoint(latLng[, point]) Parameters:  latLng:  LatLng|LatLngLiteral point:  Point optional Return Value:  Point|null Translates from the LatLng cylinder to the Point plane. This interface specifies a function which implements translation from given LatLng values to world coordinates on the map projection. The Maps API calls this method when it needs to plot locations on screen. Projection objects must implement this method, but may return null if the projection cannot calculate the Point.
fromPointToLatLng	fromPointToLatLng(pixel[, noClampNoWrap]) Parameters:  pixel:  Point noClampNoWrap:  boolean optional Return Value:  LatLng|null This interface specifies a function which implements translation from world coordinates on a map projection to LatLng values. The Maps API calls this method when it needs to translate actions on screen to positions on the map. Projection objects must implement this method, but may return null if the projection cannot calculate the LatLng.

ImageMapType class

google.maps.ImageMapType class

This class implements the MapType interface and is provided for rendering image tiles.

This class extends MVCObject.

This class implements MapType.

Access by calling const {ImageMapType} = await google.maps.importLibrary("maps"). See Libraries in the Maps JavaScript API.

Constructor
ImageMapType	ImageMapType(opts) Parameters:  opts:  ImageMapTypeOptions Constructs an ImageMapType using the provided ImageMapTypeOptions

Properties
alt	Type:  string optional
maxZoom	Type:  number
minZoom	Type:  number
name	Type:  string optional
projection	Type:  Projection
radius	Type:  number
tileSize	Type:  Size

Methods
getOpacity	getOpacity() Parameters:  None Return Value:  number opacity The current opacity. Returns the opacity level (0 (transparent) to 1.0) of the ImageMapType tiles.
getTile	getTile(tileCoord, zoom, ownerDocument) Parameters:  tileCoord:  Point Tile coordinates. zoom:  number Tile zoom. ownerDocument:  Document The document which owns this tile. Return Value:  Element|null Resulting tile.
releaseTile	releaseTile(tileDiv) Parameters:  tileDiv:  Element optional Tile to release. Return Value:  None
setOpacity	setOpacity(opacity) Parameters:  opacity:  number The new opacity. Return Value:  None Sets the opacity level (0 (transparent) to 1.0) of the ImageMapType tiles.
Inherited: addListener, bindTo, get, notify, set, setValues, unbind, unbindAll

Events
tilesloaded	function() Arguments:  None This event is fired when the visible tiles have finished loading.

ImageMapTypeOptions interface

google.maps.ImageMapTypeOptions interface

This class is used to create a MapType that renders image tiles.

Properties
alt optional	Type:  string optional Alt text to display when this MapType's button is hovered over in the MapTypeControl.
getTileUrl optional	Type:  function(Point, number): (string optional) optional Returns a string (URL) for given tile coordinate (x, y) and zoom level.
maxZoom optional	Type:  number optional The maximum zoom level for the map when displaying this MapType.
minZoom optional	Type:  number optional The minimum zoom level for the map when displaying this MapType. Optional.
name optional	Type:  string optional Name to display in the MapTypeControl.
opacity optional	Type:  number optional The opacity to apply to the tiles. The opacity should be specified as a float value between 0 and 1.0, where 0 is fully transparent and 1 is fully opaque.
tileSize optional	Type:  Size optional The tile size.

GroundOverlay class

google.maps.GroundOverlay class

A rectangular image overlay on the map.

This class extends MVCObject.

Access by calling const {GroundOverlay} = await google.maps.importLibrary("maps"). See Libraries in the Maps JavaScript API.

Constructor
GroundOverlay	GroundOverlay(url, bounds[, opts]) Parameters:  url:  string bounds:  LatLngBounds|LatLngBoundsLiteral opts:  GroundOverlayOptions optional Creates a ground overlay from the provided image URL and its LatLngBounds. The image is scaled to fit the current bounds, and projected using the current map projection.

Methods
getBounds	getBounds() Parameters:  None Return Value:  LatLngBounds Gets the LatLngBounds of this overlay.
getMap	getMap() Parameters:  None Return Value:  Map Returns the map on which this ground overlay is displayed.
getOpacity	getOpacity() Parameters:  None Return Value:  number Returns the opacity of this ground overlay.
getUrl	getUrl() Parameters:  None Return Value:  string Gets the url of the projected image.
setMap	setMap(map) Parameters:  map:  Map Return Value:  None Renders the ground overlay on the specified map. If map is set to null, the overlay is removed.
setOpacity	setOpacity(opacity) Parameters:  opacity:  number Return Value:  None Sets the opacity of this ground overlay.
Inherited: addListener, bindTo, get, notify, set, setValues, unbind, unbindAll

Events
click	function(event) Arguments:  event:  MapMouseEvent This event is fired when the DOM click event is fired on the GroundOverlay.
dblclick	function(event) Arguments:  event:  MapMouseEvent This event is fired when the DOM dblclick event is fired on the GroundOverlay.

GroundOverlayOptions interface

google.maps.GroundOverlayOptions interface

This object defines the properties that can be set on a GroundOverlay object.

Properties
clickable optional	Type:  boolean optional If true, the ground overlay can receive mouse events.
map optional	Type:  Map optional The map on which to display the overlay.
opacity optional	Type:  number optional Default: 1.0 The opacity of the overlay, expressed as a number between 0 and 1. Optional.

StyledMapType class

google.maps.StyledMapType class

Creates a MapType with a custom style.

This class extends MVCObject.

This class implements MapType.

Access by calling const {StyledMapType} = await google.maps.importLibrary("maps"). See Libraries in the Maps JavaScript API.

Constructor

StyledMapType

StyledMapType(styles[, options]) Parameters:  styles:  Array<MapTypeStyle> options:  StyledMapTypeOptions optional Creates a styled MapType with the specified options. The StyledMapType takes an array of MapTypeStyles, where each MapTypeStyle is applied to the map consecutively. A later MapTypeStyle that applies the same MapTypeStylers to the same selectors as an earlier MapTypeStyle will override the earlier MapTypeStyle. Note that the StyledMapType is not supported when a map ID is set. When using both together, you will receive a console warning.

Properties
alt	Type:  string
maxZoom	Type:  number
minZoom	Type:  number
name	Type:  string
projection	Type:  Projection
radius	Type:  number
tileSize	Type:  Size

Methods
getTile	getTile(tileCoord, zoom, ownerDocument) Parameters:  tileCoord:  Point Tile coordinates. zoom:  number Tile zoom. ownerDocument:  Document The document which owns this tile. Return Value:  Element|null Resulting tile.
releaseTile	releaseTile(tile) Parameters:  tile:  Element optional Tile to release. Return Value:  None
Inherited: addListener, bindTo, get, notify, set, setValues, unbind, unbindAll

StyledMapTypeOptions interface

google.maps.StyledMapTypeOptions interface

This class is used to specify options when creating a StyledMapType. These options cannot be changed after the StyledMapType is instantiated.

Properties
alt optional	Type:  string optional Text to display when this MapType's button is hovered over in the map type control.
maxZoom optional	Type:  number optional The maximum zoom level for the map when displaying this MapType. Optional.
minZoom optional	Type:  number optional The minimum zoom level for the map when displaying this MapType. Optional.
name optional	Type:  string optional The name to display in the map type control.