---
title: "circle.MTCircleLayer | Mobile sdk | Mobile sdk android | Android"
description: "MTCircleLayer"
---

> For AI agents: a documentation index is available at [/llms.txt](https://docs.maptiler.com/llms.txt). Markdown versions of all pages are available by appending .md to any URL.

# circle.MTCircleLayer

@Serializable

class [MTCircleLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/) : [MTLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer/-m-t-layer/)

Circle style layer that renders filled circles.

MembersMembers & Extensions

## Constructors

[MTCircleLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/-m-t-circle-layer/)

constructor(identifier: [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html), sourceIdentifier: [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html))

constructor(identifier: [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html), sourceIdentifier: [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html), maxZoom: [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html), minZoom: [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html), sourceLayer: [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html))

constructor(identifier: [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html), type: [MTLayerType](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer/-m-t-layer-type/), sourceIdentifier: [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html), maxZoom: [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)?, minZoom: [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)?, sourceLayer: [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html)?, blur: [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)?, color: [StyleValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-style-value/)?, opacity: [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)?, radius: [StyleValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-style-value/)?, strokeColor: [Int](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html)?, strokeOpacity: [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)?, strokeWidth: [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)?, translate: [DoubleArray](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double-array/index.html)?, translateAnchor: [MTCircleTranslateAnchor](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-translate-anchor/)?, pitchAlignment: [MTCirclePitchAlignment](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-pitch-alignment/)?, pitchScale: [MTCirclePitchScale](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-pitch-scale/)?, sortKey: [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)?, visibility: [MTLayerVisibility](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer/-m-t-layer-visibility/))

## Properties

[blur](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/blur/)

var [blur](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/blur/): [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)?

Amount to blur the circle.

[color](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/color/)

var [color](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/color/): [StyleValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-style-value/)?

The color of the circle (constant or expression).

[identifier](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/identifier/)

@SerialName(value = "id")

open override var [identifier](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/identifier/): [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html)

Unique layer identifier.

[maxZoom](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/max-zoom/)

@SerialName(value = "maxzoom")

open override var [maxZoom](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/max-zoom/): [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)?

The maximum zoom level for the layer.

[minZoom](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/min-zoom/)

@SerialName(value = "minzoom")

open override var [minZoom](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/min-zoom/): [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)?

The minimum zoom level for the layer.

[opacity](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/opacity/)

var [opacity](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/opacity/): [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)?

The opacity of the circle.

[pitchAlignment](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/pitch-alignment/)

var [pitchAlignment](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/pitch-alignment/): [MTCirclePitchAlignment](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-pitch-alignment/)?

Controls the alignment of circles when map is pitched.

[pitchScale](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/pitch-scale/)

var [pitchScale](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/pitch-scale/): [MTCirclePitchScale](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-pitch-scale/)?

Controls the scaling of circles when map is pitched.

[radius](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/radius/)

var [radius](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/radius/): [StyleValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-style-value/)?

The radius of the circle in pixels (constant or expression).

[sortKey](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/sort-key/)

var [sortKey](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/sort-key/): [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)?

Sort key to determine rendering order.

[sourceIdentifier](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/source-identifier/)

@SerialName(value = "source")

open override var [sourceIdentifier](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/source-identifier/): [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html)

Identifier of the source to be used for this layer.

[sourceLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/source-layer/)

@SerialName(value = "source-layer")

open override var [sourceLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/source-layer/): [String](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html)?

Vector tile source layer name, if applicable.

[strokeColor](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/stroke-color/)

@Serializable(with = [ColorAsHexSerializer::class](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.fill/-color-as-hex-serializer/))

var [strokeColor](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/stroke-color/): [Int](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html)?

The stroke color of the circle.

[strokeOpacity](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/stroke-opacity/)

var [strokeOpacity](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/stroke-opacity/): [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)?

The stroke opacity of the circle.

[strokeWidth](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/stroke-width/)

var [strokeWidth](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/stroke-width/): [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)?

The stroke width of the circle.

[translate](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/translate/)

var [translate](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/translate/): [DoubleArray](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double-array/index.html)?

The geometry’s offset. Values are x, y.

[translateAnchor](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/translate-anchor/)

var [translateAnchor](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/translate-anchor/): [MTCircleTranslateAnchor](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-translate-anchor/)?

Controls the frame of reference for translate.

[type](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/type/)

open override var [type](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/type/): [MTLayerType](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer/-m-t-layer-type/)

Type of the layer.

[visibility](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/visibility/)

var [visibility](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/visibility/): [MTLayerVisibility](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer/-m-t-layer-visibility/)

Visibility of the layer.

## Functions

[colorConst](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/color-const/)

fun [MTCircleLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/).[colorConst](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/color-const/)(color: [Int](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html)): [MTCircleLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/)

[colorExpr](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/color-expr/)

fun [MTCircleLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/).[colorExpr](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/color-expr/)(expr: [PropertyValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-property-value/)): [MTCircleLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/)

[radiusConst](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/radius-const/)

fun [MTCircleLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/).[radiusConst](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/radius-const/)(value: [Double](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-double/index.html)): [MTCircleLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/)

[radiusExpr](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/radius-expr/)

fun [MTCircleLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/).[radiusExpr](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/radius-expr/)(expr: [PropertyValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-property-value/)): [MTCircleLayer](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/)

[withFilter](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/with-filter/)

fun [withFilter](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.layer.circle/-m-t-circle-layer/with-filter/)(expr: [PropertyValue](https://docs.maptiler.com/mobile-sdk/android/api/-map-tiler-s-d-k/com.maptiler.maptilersdk.map.style.dsl/-property-value/))