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Polygons | Maps JavaScript API

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Polyline class

google.maps.Polyline class

A polyline is a linear overlay of connected line segments on the map.

This class extends MVCObject.

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

Constructor Polyline

Polyline([opts])

Parameters: 

Create a polyline using the passed

PolylineOptions

, which specify both the path of the polyline and the stroke style to use when drawing the polyline. You may pass either an array of

LatLng

s or an

MVCArray

of

LatLng

s when constructing a polyline, though simple arrays are converted to

MVCArray

s within the polyline upon instantiation.

Methods getDraggable

getDraggable()

Parameters:  None

Return Value:  boolean

Returns whether this shape can be dragged by the user.

getEditable

getEditable()

Parameters:  None

Return Value:  boolean

Returns whether this shape can be edited by the user.

getMap

getMap()

Parameters:  None

Return Value:  Map|null

Returns the map on which this shape is attached.

getPath

getPath()

Parameters:  None

Return Value:  MVCArray<LatLng>

Retrieves the path.

getVisible

getVisible()

Parameters:  None

Return Value:  boolean

Returns whether this poly is visible on the map.

setDraggable

setDraggable(draggable)

Parameters: 

Return Value:  None

If set to true, the user can drag this shape over the map. The geodesic property defines the mode of dragging.

setEditable

setEditable(editable)

Parameters: 

Return Value:  None

If set to true, the user can edit this shape by dragging the control points shown at the vertices and on each segment.

setMap

setMap(map)

Parameters: 

Return Value:  None

Renders this shape on the specified map. If map is set to null, the shape will be removed.

setOptions

setOptions(options)

Parameters: 

Return Value:  None

setPath

setPath(path)

Parameters: 

Return Value:  None

Sets the path. See

PolylineOptions

for more details.

setVisible

setVisible(visible)

Parameters: 

Return Value:  None

Hides this poly if set to false.

Inherited: addListener, bindTo, get, notify, set, setValues, unbind, unbindAll Events click

function(event)

Arguments: 

This event is fired when the DOM click event is fired on the Polyline.

dblclick

function(event)

Arguments: 

This event is fired when the DOM dblclick event is fired on the Polyline.

drag

function(event)

Arguments: 

This event is repeatedly fired while the user drags the polyline.

dragend

function(event)

Arguments: 

This event is fired when the user stops dragging the polyline.

dragstart

function(event)

Arguments: 

This event is fired when the user starts dragging the polyline.

mousedown

function(event)

Arguments: 

This event is fired when the DOM mousedown event is fired on the Polyline.

mousemove

function(event)

Arguments: 

This event is fired when the DOM mousemove event is fired on the Polyline.

mouseout

function(event)

Arguments: 

This event is fired on Polyline mouseout.

mouseover

function(event)

Arguments: 

This event is fired on Polyline mouseover.

mouseup

function(event)

Arguments: 

This event is fired when the DOM mouseup event is fired on the Polyline.

rightclick

Deprecated: Use the Polyline.contextmenu event instead in order to support usage patterns like control-click on macOS.

function(event)

Arguments: 

This event is fired when the Polyline is right-clicked on.

PolylineOptions interface

google.maps.PolylineOptions interface

PolylineOptions object used to define the properties that can be set on a Polyline.

Properties clickable optional

Type:  boolean optional

Default: true

Indicates whether this Polyline handles mouse events.

draggable optional

Type:  boolean optional

Default: false

If set to true, the user can drag this shape over the map. The geodesic property defines the mode of dragging.

editable optional

Type:  boolean optional

Default: false

If set to true, the user can edit this shape by dragging the control points shown at the vertices and on each segment.

geodesic optional

Type:  boolean optional

Default: false

When true, edges of the polygon are interpreted as geodesic and will follow the curvature of the Earth. When false, edges of the polygon are rendered as straight lines in screen space. Note that the shape of a geodesic polygon may appear to change when dragged, as the dimensions are maintained relative to the surface of the earth.

icons optional Type:  Array<IconSequence> optional

The icons to be rendered along the polyline.

map optional Type:  Map optional

Map on which to display Polyline.

path optional Type:  MVCArray<LatLng>|Array<LatLng|LatLngLiteral> optional

The ordered sequence of coordinates of the Polyline. This path may be specified using either a simple array of LatLngs, or an MVCArray of LatLngs. Note that if you pass a simple array, it will be converted to an MVCArray Inserting or removing LatLngs in the MVCArray will automatically update the polyline on the map.

strokeColor optional

Type:  string optional

The stroke color. All CSS3 colors are supported except for extended named colors.

strokeOpacity optional

Type:  number optional

The stroke opacity between 0.0 and 1.0.

strokeWeight optional

Type:  number optional

The stroke width in pixels.

visible optional

Type:  boolean optional

Default: true

Whether this polyline is visible on the map.

zIndex optional

Type:  number optional

The zIndex compared to other polys.

IconSequence interface

google.maps.IconSequence interface

Describes how icons are to be rendered on a line.

If your polyline is geodesic, then the distances specified for both offset and repeat are calculated in meters by default. Setting either offset or repeat to a pixel value will cause the distances to be calculated in pixels on the screen.

Properties fixedRotation optional

Type:  boolean optional

Default: false

If true, each icon in the sequence has the same fixed rotation regardless of the angle of the edge on which it lies. If false, case each icon in the sequence is rotated to align with its edge.

icon optional Type:  Symbol optional

The icon to render on the line.

offset optional

Type:  string optional

Default: '100%'

The distance from the start of the line at which an icon is to be rendered. This distance may be expressed as a percentage of line's length (e.g. '50%') or in pixels (e.g. '50px').

repeat optional

Type:  string optional

Default: 0

The distance between consecutive icons on the line. This distance may be expressed as a percentage of the line's length (e.g. '50%') or in pixels (e.g. '50px'). To disable repeating of the icon, specify '0'.

Polygon class

google.maps.Polygon class

A polygon (like a polyline) defines a series of connected coordinates in an ordered sequence. Additionally, polygons form a closed loop and define a filled region. See the samples in the developer's guide, starting with a simple polygon, a polygon with a hole, and more. Note that you can also use the Data layer to create a polygon. The Data layer offers a simpler way of creating holes because it handles the order of the inner and outer paths for you.

This class extends MVCObject.

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

Constructor Polygon

Polygon([opts])

Parameters: 

Create a polygon using the passed

PolygonOptions

, which specify the polygon's path, the stroke style for the polygon's edges, and the fill style for the polygon's interior regions. A polygon may contain one or more paths, where each path consists of an array of

LatLng

s. You may pass either an array of LatLngs or an

MVCArray

of

LatLng

s when constructing these paths. Arrays are converted to

MVCArray

s within the polygon upon instantiation.

Methods getDraggable

getDraggable()

Parameters:  None

Return Value:  boolean

Returns whether this shape can be dragged by the user.

getEditable

getEditable()

Parameters:  None

Return Value:  boolean

Returns whether this shape can be edited by the user.

getMap

getMap()

Parameters:  None

Return Value:  Map|null

Returns the map on which this shape is attached.

getPath

getPath()

Parameters:  None

Return Value:  MVCArray<LatLng>

Retrieves the first path.

getPaths

getPaths()

Parameters:  None

Return Value:  MVCArray<MVCArray<LatLng>>

Retrieves the paths for this polygon.

getVisible

getVisible()

Parameters:  None

Return Value:  boolean

Returns whether this poly is visible on the map.

setDraggable

setDraggable(draggable)

Parameters: 

Return Value:  None

If set to true, the user can drag this shape over the map. The geodesic property defines the mode of dragging.

setEditable

setEditable(editable)

Parameters: 

Return Value:  None

If set to true, the user can edit this shape by dragging the control points shown at the vertices and on each segment.

setMap

setMap(map)

Parameters: 

Return Value:  None

Renders this shape on the specified map. If map is set to null, the shape will be removed.

setOptions

setOptions(options)

Parameters: 

Return Value:  None

setPath

setPath(path)

Parameters: 

Return Value:  None

Sets the first path. See

PolygonOptions

for more details.

setPaths

setPaths(paths)

Parameters: 

Return Value:  None

Sets the path for this polygon.

setVisible

setVisible(visible)

Parameters: 

Return Value:  None

Hides this poly if set to false.

Inherited: addListener, bindTo, get, notify, set, setValues, unbind, unbindAll Events click

function(event)

Arguments: 

This event is fired when the DOM click event is fired on the Polygon.

dblclick

function(event)

Arguments: 

This event is fired when the DOM dblclick event is fired on the Polygon.

drag

function(event)

Arguments: 

This event is repeatedly fired while the user drags the polygon.

dragend

function(event)

Arguments: 

This event is fired when the user stops dragging the polygon.

dragstart

function(event)

Arguments: 

This event is fired when the user starts dragging the polygon.

mousedown

function(event)

Arguments: 

This event is fired when the DOM mousedown event is fired on the Polygon.

mousemove

function(event)

Arguments: 

This event is fired when the DOM mousemove event is fired on the Polygon.

mouseout

function(event)

Arguments: 

This event is fired on Polygon mouseout.

mouseover

function(event)

Arguments: 

This event is fired on Polygon mouseover.

mouseup

function(event)

Arguments: 

This event is fired when the DOM mouseup event is fired on the Polygon.

rightclick

Deprecated: Use the Polygon.contextmenu event instead in order to support usage patterns like control-click on macOS.

function(event)

Arguments: 

This event is fired when the Polygon is right-clicked on.

PolygonOptions interface

google.maps.PolygonOptions interface

PolygonOptions object used to define the properties that can be set on a Polygon.

Properties clickable optional

Type:  boolean optional

Default: true

Indicates whether this Polygon handles mouse events.

draggable optional

Type:  boolean optional

Default: false

If set to true, the user can drag this shape over the map. The geodesic property defines the mode of dragging.

editable optional

Type:  boolean optional

Default: false

If set to true, the user can edit this shape by dragging the control points shown at the vertices and on each segment.

fillColor optional

Type:  string optional

The fill color. All CSS3 colors are supported except for extended named colors.

fillOpacity optional

Type:  number optional

The fill opacity between 0.0 and 1.0

geodesic optional

Type:  boolean optional

Default: false

When true, edges of the polygon are interpreted as geodesic and will follow the curvature of the Earth. When false, edges of the polygon are rendered as straight lines in screen space. Note that the shape of a geodesic polygon may appear to change when dragged, as the dimensions are maintained relative to the surface of the earth.

map optional Type:  Map optional

Map on which to display Polygon.

paths optional Type:  MVCArray<MVCArray<LatLng>>|MVCArray<LatLng>|Array<Array<LatLng|LatLngLiteral>>|Array<LatLng|LatLngLiteral> optional

The ordered sequence of coordinates that designates a closed loop. Unlike polylines, a polygon may consist of one or more paths. As a result, the paths property may specify one or more arrays of

LatLng

coordinates. Paths are closed automatically; do not repeat the first vertex of the path as the last vertex. Simple polygons may be defined using a single array of

LatLng

s. More complex polygons may specify an array of arrays. Any simple arrays are converted into

MVCArray

s. Inserting or removing

LatLng

s from the

MVCArray

will automatically update the polygon on the map.

strokeColor optional

Type:  string optional

The stroke color. All CSS3 colors are supported except for extended named colors.

strokeOpacity optional

Type:  number optional

The stroke opacity between 0.0 and 1.0

strokePosition optional Type:  StrokePosition optional Default: StrokePosition.CENTER

The stroke position.

strokeWeight optional

Type:  number optional

The stroke width in pixels.

visible optional

Type:  boolean optional

Default: true

Whether this polygon is visible on the map.

zIndex optional

Type:  number optional

The zIndex compared to other polys.

PolyMouseEvent interface

google.maps.PolyMouseEvent interface

This object is returned from mouse events on polylines and polygons.

This interface extends MapMouseEvent.

Properties edge optional

Type:  number optional

The index of the edge within the path beneath the cursor when the event occurred, if the event occurred on a mid-point on an editable polygon.

path optional

Type:  number optional

The index of the path beneath the cursor when the event occurred, if the event occurred on a vertex and the polygon is editable. Otherwise undefined.

vertex optional

Type:  number optional

The index of the vertex beneath the cursor when the event occurred, if the event occurred on a vertex and the polyline or polygon is editable. If the event does not occur on a vertex, the value is undefined.

Inherited: domEvent, latLng Rectangle class

google.maps.Rectangle class

A rectangle overlay.

This class extends MVCObject.

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

Methods getBounds

getBounds()

Parameters:  None

Return Value:  LatLngBounds|null

Returns the bounds of this rectangle.

getDraggable

getDraggable()

Parameters:  None

Return Value:  boolean

Returns whether this rectangle can be dragged by the user.

getEditable

getEditable()

Parameters:  None

Return Value:  boolean

Returns whether this rectangle can be edited by the user.

getMap

getMap()

Parameters:  None

Return Value:  Map|null

Returns the map on which this rectangle is displayed.

getVisible

getVisible()

Parameters:  None

Return Value:  boolean

Returns whether this rectangle is visible on the map.

setBounds

setBounds(bounds)

Parameters: 

Return Value:  None

Sets the bounds of this rectangle.

setDraggable

setDraggable(draggable)

Parameters: 

Return Value:  None

If set to true, the user can drag this rectangle over the map.

setEditable

setEditable(editable)

Parameters: 

Return Value:  None

If set to true, the user can edit this rectangle by dragging the control points shown at the corners and on each edge.

setMap

setMap(map)

Parameters: 

Return Value:  None

Renders the rectangle on the specified map. If map is set to null, the rectangle will be removed.

setOptions

setOptions(options)

Parameters: 

Return Value:  None

setVisible

setVisible(visible)

Parameters: 

Return Value:  None

Hides this rectangle if set to false.

Inherited: addListener, bindTo, get, notify, set, setValues, unbind, unbindAll Events bounds_changed

function()

Arguments:  None

This event is fired when the rectangle's bounds are changed.

click

function(event)

Arguments: 

This event is fired when the DOM click event is fired on the rectangle.

dblclick

function(event)

Arguments: 

This event is fired when the DOM dblclick event is fired on the rectangle.

drag

function(event)

Arguments: 

This event is repeatedly fired while the user drags the rectangle.

dragend

function(event)

Arguments: 

This event is fired when the user stops dragging the rectangle.

dragstart

function(event)

Arguments: 

This event is fired when the user starts dragging the rectangle.

mousedown

function(event)

Arguments: 

This event is fired when the DOM mousedown event is fired on the rectangle.

mousemove

function(event)

Arguments: 

This event is fired when the DOM mousemove event is fired on the rectangle.

mouseout

function(event)

Arguments: 

This event is fired on rectangle mouseout.

mouseover

function(event)

Arguments: 

This event is fired on rectangle mouseover.

mouseup

function(event)

Arguments: 

This event is fired when the DOM mouseup event is fired on the rectangle.

rightclick

Deprecated: Use the Rectangle.contextmenu event instead in order to support usage patterns like control-click on macOS.

function(event)

Arguments: 

This event is fired when the rectangle is right-clicked on.

RectangleOptions interface

google.maps.RectangleOptions interface

RectangleOptions object used to define the properties that can be set on a Rectangle.

Properties bounds optional Type:  LatLngBounds|LatLngBoundsLiteral optional

The bounds.

clickable optional

Type:  boolean optional

Default: true

Indicates whether this Rectangle handles mouse events.

draggable optional

Type:  boolean optional

Default: false

If set to true, the user can drag this rectangle over the map.

editable optional

Type:  boolean optional

Default: false

If set to true, the user can edit this rectangle by dragging the control points shown at the corners and on each edge.

fillColor optional

Type:  string optional

The fill color. All CSS3 colors are supported except for extended named colors.

fillOpacity optional

Type:  number optional

The fill opacity between 0.0 and 1.0

map optional Type:  Map optional

Map on which to display Rectangle.

strokeColor optional

Type:  string optional

The stroke color. All CSS3 colors are supported except for extended named colors.

strokeOpacity optional

Type:  number optional

The stroke opacity between 0.0 and 1.0

strokePosition optional Type:  StrokePosition optional Default: StrokePosition.CENTER

The stroke position.

strokeWeight optional

Type:  number optional

The stroke width in pixels.

visible optional

Type:  boolean optional

Default: true

Whether this rectangle is visible on the map.

zIndex optional

Type:  number optional

The zIndex compared to other polys.

Circle class

google.maps.Circle class

A circle on the Earth's surface; also known as a "spherical cap".

This class extends MVCObject.

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

Methods getBounds

getBounds()

Parameters:  None

Return Value:  LatLngBounds|null

Gets the LatLngBounds of this Circle.

getCenter

getCenter()

Parameters:  None

Return Value:  LatLng|null

Returns the center of this circle.

getDraggable

getDraggable()

Parameters:  None

Return Value:  boolean

Returns whether this circle can be dragged by the user.

getEditable

getEditable()

Parameters:  None

Return Value:  boolean

Returns whether this circle can be edited by the user.

getMap

getMap()

Parameters:  None

Return Value:  Map|null

Returns the map on which this circle is displayed.

getRadius

getRadius()

Parameters:  None

Return Value:  number

Returns the radius of this circle (in meters).

getVisible

getVisible()

Parameters:  None

Return Value:  boolean

Returns whether this circle is visible on the map.

setCenter

setCenter(center)

Parameters: 

Return Value:  None

Sets the center of this circle.

setDraggable

setDraggable(draggable)

Parameters: 

Return Value:  None

If set to true, the user can drag this circle over the map.

setEditable

setEditable(editable)

Parameters: 

Return Value:  None

If set to true, the user can edit this circle by dragging the control points shown at the center and around the circumference of the circle.

setMap

setMap(map)

Parameters: 

Return Value:  None

Renders the circle on the specified map. If map is set to null, the circle will be removed.

setOptions

setOptions(options)

Parameters: 

Return Value:  None

setRadius

setRadius(radius)

Parameters: 

Return Value:  None

Sets the radius of this circle (in meters).

setVisible

setVisible(visible)

Parameters: 

Return Value:  None

Hides this circle if set to false.

Inherited: addListener, bindTo, get, notify, set, setValues, unbind, unbindAll Events center_changed

function()

Arguments:  None

This event is fired when the circle's center is changed.

click

function(event)

Arguments: 

This event is fired when the DOM click event is fired on the circle.

dblclick

function(event)

Arguments: 

This event is fired when the DOM dblclick event is fired on the circle.

drag

function(event)

Arguments: 

This event is repeatedly fired while the user drags the circle.

dragend

function(event)

Arguments: 

This event is fired when the user stops dragging the circle.

dragstart

function(event)

Arguments: 

This event is fired when the user starts dragging the circle.

mousedown

function(event)

Arguments: 

This event is fired when the DOM mousedown event is fired on the circle.

mousemove

function(event)

Arguments: 

This event is fired when the DOM mousemove event is fired on the circle.

mouseout

function(event)

Arguments: 

This event is fired on circle mouseout.

mouseover

function(event)

Arguments: 

This event is fired on circle mouseover.

mouseup

function(event)

Arguments: 

This event is fired when the DOM mouseup event is fired on the circle.

radius_changed

function()

Arguments:  None

This event is fired when the circle's radius is changed.

rightclick

function(event)

Arguments: 

This event is fired when the circle is right-clicked on.

CircleOptions interface

google.maps.CircleOptions interface

CircleOptions object used to define the properties that can be set on a Circle.

Properties center optional Type:  LatLng|LatLngLiteral optional

The center of the Circle.

clickable optional

Type:  boolean optional

Default: true

Indicates whether this Circle handles mouse events.

draggable optional

Type:  boolean optional

Default: false

If set to true, the user can drag this circle over the map.

editable optional

Type:  boolean optional

Default: false

If set to true, the user can edit this circle by dragging the control points shown at the center and around the circumference of the circle.

fillColor optional

Type:  string optional

The fill color. All CSS3 colors are supported except for extended named colors.

fillOpacity optional

Type:  number optional

The fill opacity between 0.0 and 1.0.

map optional Type:  Map optional

Map on which to display the Circle.

radius optional

Type:  number optional

The radius in meters on the Earth's surface.

strokeColor optional

Type:  string optional

The stroke color. All CSS3 colors are supported except for extended named colors.

strokeOpacity optional

Type:  number optional

The stroke opacity between 0.0 and 1.0.

strokePosition optional Type:  StrokePosition optional Default: StrokePosition.CENTER

The stroke position.

strokeWeight optional

Type:  number optional

The stroke width in pixels.

visible optional

Type:  boolean optional

Default: true

Whether this circle is visible on the map.

zIndex optional

Type:  number optional

The zIndex compared to other polys.

StrokePosition constants

google.maps.StrokePosition constants

The possible positions of the stroke on a polygon.

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

Constants CENTER The stroke is centered on the polygon's path, with half the stroke inside the polygon and half the stroke outside the polygon. INSIDE The stroke lies inside the polygon. OUTSIDE The stroke lies outside the polygon.

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

Last updated 2025-07-09 UTC.

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