HERE Maps API for JavaScript - API Reference: Class: Circle

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Index
- H
- H.clustering
  - Interfaces
- H.data
- H.data.geojson
- H.data.heatmap
  - Interfaces
    - IDataPoint
- H.data.kml
- H.geo
  - Members
    - mercator
  - Typedefs
  - Interfaces
    - IPoint
    - IProjection
  - Methods
    - isDBC
- H.lang
- H.map
  - Interfaces
- H.map.layer
  - Interfaces
- H.map.provider
- H.map.render
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    - RenderState
  - Typedefs
    - RenderingParams
  - Interfaces
    - ICapabilities
- H.map.render.harp
- H.map.render.p2d
- H.map.render.webgl
  - Typedefs
    - StyleConfig
- H.mapevents
- H.math
  - Typedefs
    - BitMask
    - Range
  - Interfaces
    - IPoint
    - ISize
- H.service
  - Typedefs
- H.service.extension
  - Typedefs
    - RowFilter
- H.service.extension.customLocation
  - Members
    - Permission
    - Storage
  - Typedefs
- H.service.extension.customRoute
- H.service.extension.dataView
  - Interfaces
- H.service.extension.geofencing
- H.service.extension.platformData
  - Typedefs
    - LayerConfig
    - Table
- H.service.iml
- H.service.metaInfo
- H.service.omv
- H.service.publicTransit
- H.service.rasterTile
- H.service.traffic
- H.service.traffic.flow
- H.service.traffic.incidents
- H.service.trafficVectorTile
- H.ui
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    - LayoutAlignment
    - UnitSystem
- H.ui.base
- H.ui.i18n
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    - defaultLocales
- H.util
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- H.util.animation
  - Interfaces
    - IAnimatable
- H.util.animation.ease
  - Methods
- H.util.flexiblePolyline
  - Typedefs
    - Data
  - Methods
    - decode
    - encode
- H.util.kinetics
  - Interfaces
    - IKinetics
- H.util.wkt
  - Methods
    - toGeometry
- H.venues
- H.venues.ui
- H.clustering.DataPoint
  - Members
    - alt
    - data
    - lat
    - lng
    - wt
- H.clustering.Provider
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    - Strategy
    - max
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    - uid
    - uri
  - Typedefs
  - Methods
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    - update
- H.data.AbstractReader
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    - State
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  - Events
    - statechange
- H.data.AbstractReader.Event
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  - Methods
    - preventDefault
    - stopPropagation
- H.data.geojson.Reader
  - Typedefs
    - Options
  - Methods
  - Events
    - statechange
- H.data.heatmap.Colors
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    - DEFAULT
- H.data.heatmap.Provider
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  - Typedefs
    - Options
  - Methods
  - Events
    - update
- H.data.kml.Reader
  - Methods
  - Events
    - statechange
- H.geo.AbstractGeometry
  - Methods
- H.geo.LineString
  - Methods
- H.geo.MultiGeometry
  - Methods
- H.geo.MultiLineString
  - Methods
- H.geo.MultiPoint
  - Methods
- H.geo.MultiPolygon
  - Methods
- H.geo.PixelProjection
  - Members
    - h
    - projection
    - w
    - x
    - y
  - Methods
- H.geo.Point
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    - alt
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    - lng
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- H.geo.Polygon
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    - Direction
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- H.geo.Rect
  - Methods
- H.lang.IllegalOperationError
- H.lang.InvalidArgumentError
- H.lang.OutOfRangeError
- H.Map
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- H.map.AbstractMarker
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    - draggable
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    - Options
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- H.map.ArrowStyle
  - Typedefs
    - Options
  - Methods
    - equals
- H.map.ChangeEvent
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  - Methods
    - preventDefault
    - stopPropagation
- H.map.Circle
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    - draggable
  - Typedefs
    - Options
  - Methods
- H.map.DataModel
  - Methods
  - Events
    - add
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    - remove
    - set
- H.map.DomIcon
  - Typedefs
    - Options
- H.map.DomMarker
  - Members
    - draggable
  - Typedefs
    - Options
  - Methods
- H.map.Feature
  - Methods
- H.map.GeoShape
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    - draggable
  - Methods
- H.map.Group
  - Members
    - draggable
  - Typedefs
    - Options
  - Methods
- H.map.HitArea
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    - ShapeType
- H.map.Icon
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    - State
  - Typedefs
    - Options
  - Methods
  - Events
    - statechange
- H.map.Imprint
  - Typedefs
    - Options
  - Methods
- H.map.layer.BaseTileLayer
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  - Methods
  - Events
    - update
- H.map.layer.CanvasLayer
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  - Typedefs
    - Options
  - Methods
  - Events
    - update
- H.map.layer.DomLayer
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  - Methods
  - Events
    - update
- H.map.layer.Layer
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  - Typedefs
    - Options
  - Methods
  - Events
    - update
- H.map.layer.MarkerTileLayer
  - Members
  - Methods
  - Events
    - update
- H.map.layer.ObjectLayer
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  - Typedefs
    - Options
    - OverlaysResponse
  - Methods
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    - update
- H.map.layer.TileLayer
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  - Methods
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    - update
- H.map.Marker
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    - draggable
  - Typedefs
    - Options
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- H.map.Object
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  - Typedefs
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- H.map.Overlay
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  - Typedefs
    - Options
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- H.map.Polygon
  - Members
    - MAX_EXTRUDE_HEIGHT
    - draggable
  - Typedefs
    - Options
  - Methods
- H.map.Polyline
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    - draggable
  - Typedefs
    - Options
  - Methods
- H.map.provider.ImageTileProvider
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  - Typedefs
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  - Methods
  - Events
    - update
- H.map.provider.Invalidations
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    - GetObjectsWithinOptions
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- H.map.provider.MarkerTileProvider
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    - update
- H.map.provider.ObjectProvider
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    - uid
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- H.map.provider.Provider
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    - uid
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    - update
- H.map.provider.RemoteTileProvider
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    - update
- H.map.provider.Tile
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    - data
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- H.map.Rect
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    - draggable
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- H.map.render.harp.Style
  - Methods
  - Events
    - change
    - error
- H.map.render.p2d.RenderEngine
  - Typedefs
    - Options
  - Methods
  - Events
    - render
- H.map.render.RenderEngine
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    - InteractionModifiers
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  - Events
    - render
- H.map.render.Style
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    - State
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  - Events
    - change
    - error
- H.map.render.webgl.RenderEngine
  - Typedefs
    - Options
  - Methods
  - Events
    - render
- H.map.render.webgl.Style
  - Methods
  - Events
    - change
    - error
- H.map.Spatial
  - Members
    - draggable
  - Typedefs
    - Label
    - Options
  - Methods
- H.map.SpatialStyle
  - Members
  - Typedefs
  - Methods
    - equals
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- H.map.Style
  - Members
    - State
- H.map.ViewModel
  - Typedefs
    - ILookAtData
  - Methods
- H.map.ViewPort
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  - Typedefs
    - Options
    - Padding
  - Methods
  - Events
    - sync
    - update
- H.mapevents.Behavior
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    - Feature
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    - Options
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- H.mapevents.ContextMenuEvent
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    - preventDefault
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- H.mapevents.Event
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  - Methods
    - preventDefault
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- H.mapevents.MapEvents
  - Methods
  - Events
- H.mapevents.Pointer
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  - Typedefs
    - Buttons
- H.mapevents.WheelEvent
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  - Methods
    - preventDefault
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- H.math.Point
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    - x
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  - Methods
- H.math.Rect
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- H.math.Size
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    - h
    - w
- H.service.extension.customLocation.Service
  - Members
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- H.service.extension.customLocation.Table
  - Methods
- H.service.extension.customLocation.Table.Column
  - Methods
    - getCell
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- H.service.extension.customLocation.Table.Row
  - Methods
- H.service.extension.customLocation.TileProvider
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    - max
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    - uid
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- H.service.extension.customRoute.Service
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    - CONFIG_KEY
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- H.service.extension.geofencing.Service
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    - CONFIG_KEY
    - EntryPoint
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- H.service.extension.platformData.Service
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- H.service.extension.platformData.TileProvider
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  - Methods
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- H.service.extension.TileProvider
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    - StyleCallback
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- H.service.GeocodingService
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    - CONFIG_KEY
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- H.service.GeofencingService
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    - CONFIG_KEY
  - Methods
- H.service.iml.Provider
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    - CONFIG_KEY
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    - CONFIG_KEY
    - getInfo
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    - CONFIG_KEY
    - getInfo
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    - CONFIG_KEY
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    - CONFIG_KEY
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    - CONFIG_KEY
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    - update
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    - update
- H.service.traffic.Service
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    - CONFIG_KEY
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- H.service.traffic.Service7
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    - CONFIG_KEY
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HomeHERE Maps API for JavaScript - API Reference...IndexClass: Circle

Table of Contents

Class: Circle

Feedback

Last UpdatedMay 21, 2025
10 minute read

H .map.Circle

new H.map.Circle (center, radius, opt_options)

A Circle is a visual representation of a circular shaped surface on a map.

Search:

Name	Type	Description
`center`	H.geo.IPoint	The geographical coordinates of the center of the circle
`radius`	number	The radius of the circle in meters
`opt_options`	H.map.Circle.Options	optional An object that specifies the initialization options of the circle (among these, `precision` has a significant impact on the shape of the circle - please see `H.map.Circle.Options`

Extends

H.map.Polygon

Members

draggable boolean inherited

Indicates whether the map object will be considered as target for drag events. The default value is false

Methods

addEventListener (type, handler, opt_capture, opt_scope) inherited

This method adds a listener for a specific event.

Note that to prevent potential memory leaks, you must either call removeEventListener or dispose on the given object when you no longer need it.

Search:

Name	Type	Description
`type`	string	The name of the event
`handler`	function	An event handler function
`opt_capture`	boolean	optional `true` indicates that the method should listen in the capture phase (bubble otherwise)
`opt_scope`	Object	optional An object defining the scope for the handler function

addOnDisposeCallback (callback, opt_scope) inherited

This method adds a callback which is triggered when the EventTarget object is being disposed.

Name	Type	Description
`callback`	function	The callback function.
`opt_scope`	Object	optional An optional scope for the callback function

compareZOrder (other)number inherited

This method compares the rendering z-order of the given object with another object. (The 'given object' mean the object on which the method has been invoke.)

Name	Type	Description
`other`	H.map.Object	The map object with which to compare the given object.

Returns:

Type	Description
number	A value lower than `0` indicates that the given object has a lower z-order. `0` indicates that both objects have the same z-order. A value greater than `0`, indicates that the given object has a higher z-order.

contains (object)boolean inherited

This method checks whether the received object is an inclusive descendant of the given object.

Name	Type	Description
`object`	*	The object to check.

Returns:

Type	Description
boolean	`true` if the given object is contained in the given object, otherwise `false`

dispatchEvent (evt) inherited

This method dispatches an event on the EventTarget object.

Name	Type	Description
`evt`	H.util.Event \| string	An object representing the event or a string with the event name

dispose () inherited

This method removes listeners from the given object. Classes that extend EventTarget may need to override this method in order to remove references to DOM Elements and additional listeners.

getArrows ()H.map.ArrowStyle | undefined inherited

This method retrieves the arrow style of the given spatial object or undefined if the style is not defined. The returned arrow style is treated as immutable and must not be modified afterwards to prevent inconsistencies!

Returns:

Type	Description
H.map.ArrowStyle \| undefined	An object encapsulating information about the arrow style or `undefined` if the arrow style is not defined.

getBoundingBox ()H.geo.Rect inherited

Returns the smallest rectangle which encloses the whole geometry of the GeoShape.

Returns:

Type	Description
H.geo.Rect

getCenter ()H.geo.IPoint

This method retrieves the center of the circle. You must not modify the returned object without calling without calling setCenter() immediately afterwards.

Returns:

Type	Description
H.geo.IPoint	An object containing the geographical coordinates of the center of the circle

getData ()* inherited

To retrieve arbitrary data associated with the given object.

Returns:

Type	Description
*	The associated data.

getElevation ()number inherited

Returns elevation of the polygon in meters.

Returns:

Type	Description
number

getExtrusion ()number inherited

Returns extrusion of the polygon in meters.

Returns:

Type	Description
number

getGeometry ()H.geo.Polygon | H.geo.MultiPolygon inherited overrides

To obtain the polygon's geometry. If you modify the obtained geometry, you must call setGeometry afterwards to not violate the integrity of the polygon.

Returns:

Type	Description
H.geo.Polygon \| H.geo.MultiPolygon

getId ()* inherited

This method retrieves the ID of the given object.

Returns:

Type	Description
*	The identifier of the given object.

getInvalidations ()H.map.provider.Invalidations inherited

This method retrieves the invalidation states for the given object.

Returns:

Type	Description
H.map.provider.Invalidations	An object containing the invalidation states

getParentGroup ()H.map.Group inherited

This method retrieves the parent group which contains the given object or null if the object is not contained in any group.

Returns:

Type	Description
H.map.Group	An object representing the containing group object or `null` if the given object is not contained in any group.

getPrecision ()number

This method retrieves the precision of the given circle.

Returns:

Type	Description
number	A value representing the precision of the given circle.

getProvider ()H.map.provider.ObjectProvider inherited

This method obtains the current provider of the given object.

Returns:

Type	Description
H.map.provider.ObjectProvider	An object representing the provider

getRadius ()number

This method retrieves the length of the radius of the circle in meters.

Returns:

Type	Description
number	A value representing the length of the circle radius in meters.

getRemoteId ()number | string | undefined inherited

This method retrieves the remote ID of the given object.

Returns:

Type	Description
number \| string \| undefined	The remote identifier of the given object.

getRootGroup ()H.map.Object inherited

The root object to which the given object is attached or the object itself if it is not attached to another.

Returns:

Type	Description
H.map.Object	An object representing the root group for the given object or the given object if it is not part of a group.

getStyle ()H.map.SpatialStyle inherited

This method retrieves the drawing style of the given spatial object. The returned style is treated as immutable and must not be modified afterwards to prevent inconsistencies!

Returns:

Type	Description
H.map.SpatialStyle	The given spatial object

getVisibility (opt_effective)boolean inherited

This method retrieves a value indicating the visibility of the given object.

Name	Type	Description
`opt_effective`	boolean	optional Indicates whether the effective visibility is requested, defaults to `false`. If set to `true` the visibility of all nesting parent groups on the ancestor axis are also taken into account: The object is only visible if the object itself and all of its nesting parent groups are visible.

Returns:

Type	Description
boolean	A value indicating whether the object is visible

getVolatility (opt_effective)boolean inherited

To obtain the volatility indicator of the object.

Name	Type	Description
`opt_effective`	boolean	optional Indicates whether the effective volatility is requested, defaults to `false`. If set to `true` the volatility of all nesting parent groups on the ancestor axis are also taken into account: The object is volatile if the object itself or at least one of its nesting parent groups is volatile.

Returns:

Type	Description
boolean

getZIndex ()number | undefined inherited

This method retrieves the z-index of the given object.

Returns:

Type	Description
number \| undefined	A value reflecting the z-index of the given object.

invalidate (flags)boolean inherited

This method invalidates the given map object.

Name	Type	Description
`flags`	H.math.BitMask.<!H.map.provider.Invalidations.Flag>	The value indicates the types of invalidations to the given object.

Returns:

Type	Description
boolean	Indicates whether a validation was executed (only if the object has a provider)

isClosed ()boolean inherited

This method indicates whether this spatial object represents a closed shape.

Returns:

Type	Description
boolean	`true` if the given spatial object is a closed shape, `false` otherwise

removeEventListener (type, handler, opt_capture, opt_scope) inherited

This method removes a previously added listener from the EventTarget instance.

Search:

Name	Type	Description
`type`	string	The name of the event
`handler`	function	A previously added event handler
`opt_capture`	boolean	optional `true` indicates that the method should listen in the capture phase (bubble otherwise)
`opt_scope`	Object	optional An object defining the scope for the handler function

setArrows (opt_arrows)H.map.Spatial inherited

This method sets the arrow style of the given spatial object.

Valid only when using map engine type H.Map.EngineType['P2D'].

With engine type H.Map.EngineType['WEBGL'], an arrows style for the given spatial object can be set within the style property in the configuration options object passed to the constructor or in the style object argument provided to the setStyle method.
See properties lineDash, lineDashOffset, lineTailCap and lineHeadCap in H.map.SpatialStyle.Options for more details.

Name	Type	Description
`opt_arrows`	H.map.ArrowStyle \| H.map.ArrowStyle.Options	optional The arrow style to be applied

Returns:

Type	Description
H.map.Spatial	The given spatial object

setCenter (center)

This method sets the geographical center of the circle. If the specified center is an instance of H.geo.Point, you must not modify it without calling setCenter() immediately afterwards.

Name	Type	Description
`center`	H.geo.IPoint	An object defining the geographical coordinates of the center of the circle

setData (data)H.map.Object inherited

This method stores arbitrary data associated with the given object.

Name	Type	Description
`data`	*	The data to be stored

Returns:

Type	Description
H.map.Object	The given map object itself

setElevation (elevation) inherited

Sets elevation of the polygon in meters.

Name	Type	Description
`elevation`	number	The elevation in meters. Must be greater than or equal to `0`. The maximum supported cumulative height (`elevation + extrusion`) is `H.map.Polygon.MAX_EXTRUDE_HEIGHT`.

Throws:

If the specified value is invalid.

Type

H.lang.InvalidArgumentError
If cumulative height is out of range [0, H.map.Polygon.MAX_EXTRUDE_HEIGHT].

Type

H.lang.OutOfRangeError

setExtrusion (extrusion) inherited

To set the extrusion of the polygon in meters.

Name	Type	Description
`extrusion`	number	The extrusion in meters. Must be greater than or equal to `0`. The maximum supported cumulative height (`elevation + extrusion`) is `H.map.Polygon.MAX_EXTRUDE_HEIGHT`.

Throws:

If the specified value is invalid.

Type

H.lang.InvalidArgumentError
If cumulative height is out of range [0, H.map.Polygon.MAX_EXTRUDE_HEIGHT].

Type

H.lang.OutOfRangeError

setGeometry (geometry)H.map.Polygon inherited overrides

To set the polygon's geometry. If the given geometry is modified afterwards, it must be set via setGeometry again to not violate the integrity of the polygon.

Name	Type	Description
`geometry`	H.geo.Polygon \| H.geo.MultiPolygon

Returns:

Type	Description
H.map.Polygon

setPrecision (precision)

This method sets the precision of the circle (see H.map.Circle.Options#precision).

Name	Type	Description
`precision`	number	A value indicating precision

setRadius (radius)

This method sets the length of the radius of the circle in meters. The value is restricted to the range of [0 ... 20015089.27787877] (half of WGS84 mean circumference).

Name	Type	Description
`radius`	number

setRemoteId (id)H.map.Object inherited

This method sets the ID that identifies the given object in a remote service.

Name	Type	Description
`id`	number \| string	The identifier to assign to the given object.

Returns:

Type	Description
H.map.Object	The given map object itself

setStyle (opt_style)H.map.Spatial inherited

This method sets the drawing style of the given spatial object. If the argument opt_style is an instance of H.map.SpatialStyle, it is treated as immutable and must not be modified afterwards to prevent inconsistencies! .

Name	Type	Description
`opt_style`	H.map.SpatialStyle \| H.map.SpatialStyle.Options	optional The style to set. If it evaluates to a `false`, the `H.map.SpatialStyle.DEFAULT_STYLE` is used.

Returns:

Type	Description
H.map.Spatial	The given spatial object

setVisibility (opt_visibility)H.map.Object inherited

This method sets the visibility of the given object.

Name	Type	Description
`opt_visibility`	boolean	optional Indicates whether the map object should be visible, the default value is `false`.

Returns:

Type	Description
H.map.Object	The given object

setVolatility (opt_volatility)H.map.Object inherited

To set the volatility indicator of the object

Name	Type	Description
`opt_volatility`	boolean	optional The volatility value to set, `true` means volatile, `false` means non-volatile. The default value is `false`.

Returns:

Type	Description
H.map.Object	The given object

setZIndex (zIndex)H.map.Object inherited

This method sets the z-index of the given object.

Name	Type	Description
`zIndex`	number \| undefined	A value indicating the new z-index

Returns:

Type	Description
H.map.Object	The given object

toGeoJSON (opt_callback)Object inherited

To obtain a GeoJSON Feature object representing the given map object.

Name	Type	Description
`opt_callback`	function(*)	optional Callback called with the object's data as argument. It must return either a valid JSON object or `null` which will be set as value for the Feature's properties key.

See:

GeoJSON spec

Throws:

If the provided callback is not a function.

Type

H.lang.InvalidArgumentError
If the callback (if provided) returns an invalid JSON object/null or (if not) the object's data is an invalid JSON object.

Type

Error

Returns:

Type	Description
Object	A GeoJSON `Feature` or `FeatureCollection` object representing the given map object.

Type Definitions

H.map.Circle.Options Object

This object encapsulates the initialization options for a circle.

Properties:

Search:

Name	Type	Argument	Description
`style`	H.map.SpatialStyle	<optional>	The style to be used when tracing the polyline (circle)
`visibility`	boolean	<optional>	Indicates whether the map object is visible, the default is `true` A map object is only treated as visible, if it self and all of its nesting parent groups are visible.
`volatility`	boolean	<optional>	Indicates whether the map object is volatile, the default is `false`. A volatile map object has frequently invalidations (for example geometry or style changes). A map object is already treated as volatile, if it self or one of its nesting parent groups is volatile.
`precision`	number	<optional>	The precision of the circle as a number of segments to be used when rendering the circle. The value is restricted to the range between [4 ... 360], where 60 is the default. Note that the lower the value the more angular and the less circle-like the shape appears and, conversely, the higher the value the smoother and more rounded the result. Thus, starting at the extreme low end of the possible values, 4 produces a square, 6 a hexagon, while 30 results in a circle-like shape, although it appears increasingly angular as the zoom level increases (as you zoom in), and finally 360 produces a smooth circle.
`zIndex`	number	<optional>	The z-index value of the circle object, the default is `undefined`.
`min`	number	<optional>	The minimum zoom level at which the circle is visible, the default is `-Infinity`
`max`	number	<optional>	The maximum zoom level at which the circle is visible, the default is `Infinity`
`provider`	H.map.provider.Provider	<optional>	The provider of the circle object. This property is needed only if a custom implementation of `ObjectProvider` wants to instantiate the circle object.
`data`	*		Optional arbitrary data to be stored with this circle. This data can be retrieved by calling `getData()`
`extrusion`	number	<optional>	The extrusion height for the circle in meters, default is `0`. The rendering order of the extruded object follows the logic of the regular 2D objects and is defined by the zIndex and the order in which objects are added to the map. Maximum supported "height" (`elevation + extrusion`) is `H.map.Polygon.MAX_EXTRUDE_HEIGHT`.
`elevation`	number	<optional>	The elevation height of the circle in meters, default is `0`. It can be combined with the `extrusion` parameter. Maximum supported "height" (`elevation + extrusion`) is `H.map.Polygon.MAX_EXTRUDE_HEIGHT`.

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