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MapOptions

MapOptions = object

Defined in: src/ui/map.ts:80

The Map options object.

Properties

attributionControl?

optional attributionControl: false | AttributionControlOptions

Defined in: src/ui/map.ts:112

If set, an AttributionControl will be added to the map with the provided options. To disable the attribution control, pass false. Note: showing the logo of TrackAsia is not required for using TrackAsia.

Default Value

compact: true, customAttribution: "TrackAsia ...".

bearing?

optional bearing: number

Defined in: src/ui/map.ts:227

The initial bearing (rotation) of the map, measured in degrees counter-clockwise from north. If bearing is not specified in the constructor options, TrackAsia GL JS will look for it in the map's style object. If it is not specified in the style, either, it will default to 0.

Default Value

0

bearingSnap?

optional bearingSnap: number

Defined in: src/ui/map.ts:105

The threshold, measured in degrees, that determines when the map's bearing will snap to north. For example, with a bearingSnap of 7, if the user rotates the map within 7 degrees of north, the map will automatically snap to exact north.

Default Value

7

bounds?

optional bounds: LngLatBoundsLike

Defined in: src/ui/map.ts:298

The initial bounds of the map. If bounds is specified, it overrides center and zoom constructor options.

boxZoom?

optional boxZoom: boolean

Defined in: src/ui/map.ts:167

If true, the "box zoom" interaction is enabled (see BoxZoomHandler).

Default Value

true

cancelPendingTileRequestsWhileZooming?

optional cancelPendingTileRequestsWhileZooming: boolean

Defined in: src/ui/map.ts:351

Determines whether to cancel, or retain, tiles from the current viewport which are still loading but which belong to a farther (smaller) zoom level than the current one. * If true, when zooming in, tiles which didn't manage to load for previous zoom levels will become canceled. This might save some computing resources for slower devices, but the map details might appear more abruptly at the end of the zoom. * If false, when zooming in, the previous zoom level(s) tiles will progressively appear, giving a smoother map details experience. However, more tiles will be rendered in a short period of time.

Default Value

true

canvasContextAttributes?

optional canvasContextAttributes: WebGLContextAttributesWithType

Defined in: src/ui/map.ts:128

Set of WebGLContextAttributes that are applied to the WebGL context of the map. See https://developer.mozilla.org/en-US/docs/Web/API/HTMLCanvasElement/getContext for more details. contextType can be set to webgl2 or webgl to force a WebGL version. Not setting it, Trackasia will do it's best to get a suitable context.

Default Value

antialias: false, powerPreference: 'high-performance', preserveDrawingBuffer: false, failIfMajorPerformanceCaveat: false, desynchronized: false, contextType: 'webgl2withfallback'

center?

optional center: LngLatLike

Defined in: src/ui/map.ts:212

The initial geographical centerpoint of the map. If center is not specified in the constructor options, TrackAsia GL JS will look for it in the map's style object. If it is not specified in the style, either, it will default to [0, 0] Note: TrackAsia GL JS uses longitude, latitude coordinate order (as opposed to latitude, longitude) to match GeoJSON.

Default Value

[0, 0]

centerClampedToGround?

optional centerClampedToGround: boolean

Defined in: src/ui/map.ts:358

If true, the elevation of the center point will automatically be set to the terrain elevation (or zero if terrain is not enabled). If false, the elevation of the center point will default to sea level and will not automatically update. Defaults to true. Needs to be set to false to keep the camera above ground when pitch > 90 degrees.

clickTolerance?

optional clickTolerance: number

Defined in: src/ui/map.ts:294

The max number of pixels a user can shift the mouse pointer during a click for it to be considered a valid click (as opposed to a mouse drag).

Default Value

3

collectResourceTiming?

optional collectResourceTiming: boolean

Defined in: src/ui/map.ts:289

If true, Resource Timing API information will be collected for requests made by GeoJSON and Vector Tile web workers (this information is normally inaccessible from the main Javascript thread). Information will be returned in a resourceTiming property of relevant data events.

Default Value

false

container

container: HTMLElement | string

Defined in: src/ui/map.ts:98

The HTML element in which TrackAsia GL JS will render the map, or the element's string id. The specified element must have no children.

cooperativeGestures?

optional cooperativeGestures: GestureOptions

Defined in: src/ui/map.ts:202

If true or set to an options object, the map is only accessible on desktop while holding Command/Ctrl and only accessible on mobile with two fingers. Interacting with the map using normal gestures will trigger an informational screen. With this option enabled, "drag to pitch" requires a three-finger gesture. Cooperative gestures are disabled when a map enters fullscreen using FullscreenControl.

Default Value

false

crossSourceCollisions?

optional crossSourceCollisions: boolean

Defined in: src/ui/map.ts:284

If true, symbols from multiple sources can collide with each other during collision detection. If false, collision detection is run separately for the symbols in each source.

Default Value

true

doubleClickZoom?

optional doubleClickZoom: boolean

Defined in: src/ui/map.ts:187

If true, the "double click to zoom" interaction is enabled (see DoubleClickZoomHandler).

Default Value

true

dragPan?

optional dragPan: boolean | DragPanOptions

Defined in: src/ui/map.ts:177

If true, the "drag to pan" interaction is enabled. An Object value is passed as options to DragPanHandler#enable.

Default Value

true

dragRotate?

optional dragRotate: boolean

Defined in: src/ui/map.ts:172

If true, the "drag to rotate" interaction is enabled (see DragRotateHandler).

Default Value

true

elevation?

optional elevation: number

Defined in: src/ui/map.ts:217

The elevation of the initial geographical centerpoint of the map, in meters above sea level. If elevation is not specified in the constructor options, it will default to 0.

Default Value

0

fadeDuration?

optional fadeDuration: number

Defined in: src/ui/map.ts:279

Controls the duration of the fade-in/fade-out animation for label collisions after initial map load, in milliseconds. This setting affects all symbol layers. This setting does not affect the duration of runtime styling transitions or raster tile cross-fading.

Default Value

300

fitBoundsOptions?

optional fitBoundsOptions: FitBoundsOptions

Defined in: src/ui/map.ts:302

A FitBoundsOptions options object to use only when fitting the initial bounds provided above.

hash?

optional hash: boolean | string

Defined in: src/ui/map.ts:89

If true, the map's position (zoom, center latitude, center longitude, bearing, and pitch) will be synced with the hash fragment of the page's URL. For example, http://path/to/my/page.html#2.59/39.26/53.07/-24.1/60. An additional string may optionally be provided to indicate a parameter-styled hash, e.g. http://path/to/my/page.html#map=2.59/39.26/53.07/-24.1/60&foo=bar, where foo is a custom parameter and bar is an arbitrary hash distinct from the map hash.

Default Value

false

interactive?

optional interactive: boolean

Defined in: src/ui/map.ts:94

If false, no mouse, touch, or keyboard listeners will be attached to the map, so it will not respond to interaction.

Default Value

true

keyboard?

optional keyboard: boolean

Defined in: src/ui/map.ts:182

If true, keyboard shortcuts are enabled (see KeyboardHandler).

Default Value

true

locale?

optional locale: any

Defined in: src/ui/map.ts:274

A patch to apply to the default localization table for UI strings, e.g. control tooltips. The locale object maps namespaced UI string IDs to translated strings in the target language; see src/ui/default_locale.js for an example with all supported string IDs. The object may specify all UI strings (thereby adding support for a new translation) or only a subset of strings (thereby patching the default translation table).

Default Value

null

localIdeographFontFamily?

optional localIdeographFontFamily: string | false

Defined in: src/ui/map.ts:311

Defines a CSS font-family for locally overriding generation of Chinese, Japanese, and Korean characters. For these characters, font settings from the map's style will be ignored, except for font-weight keywords (light/regular/medium/bold). Set to false, to enable font settings from the map's style for these glyph ranges. The purpose of this option is to avoid bandwidth-intensive glyph server requests. (See Use locally generated ideographs.)

Default Value

'sans-serif'

logoPosition?

optional logoPosition: ControlPosition

Defined in: src/ui/map.ts:121

A string representing the position of the TrackAsia wordmark on the map. Valid options are top-left,top-right, bottom-left, or bottom-right.

Default Value

'bottom-left'

maxBounds?

optional maxBounds: LngLatBoundsLike

Defined in: src/ui/map.ts:137

If set, the map will be constrained to the given bounds.

maxCanvasSize?

optional maxCanvasSize: [number, number]

Defined in: src/ui/map.ts:344

The canvas' width and height max size. The values are passed as an array where the first element is max width and the second element is max height. You shouldn't set this above WebGl MAX_TEXTURE_SIZE.

Default Value

[4096, 4096].

maxPitch?

optional maxPitch: number | null

Defined in: src/ui/map.ts:162

The maximum pitch of the map (0-180).

Default Value

60

maxTileCacheSize?

optional maxTileCacheSize: number | null

Defined in: src/ui/map.ts:252

The maximum number of tiles stored in the tile cache for a given source. If omitted, the cache will be dynamically sized based on the current viewport which can be set using maxTileCacheZoomLevels constructor options.

Default Value

null

maxTileCacheZoomLevels?

optional maxTileCacheZoomLevels: number

Defined in: src/ui/map.ts:257

The maximum number of zoom levels for which to store tiles for a given source. Tile cache dynamic size is calculated by multiplying maxTileCacheZoomLevels with the approximate number of tiles in the viewport for a given source.

Default Value

5

maxZoom?

optional maxZoom: number | null

Defined in: src/ui/map.ts:152

The maximum zoom level of the map (0-24).

Default Value

22

minPitch?

optional minPitch: number | null

Defined in: src/ui/map.ts:157

The minimum pitch of the map (0-180).

Default Value

0

minZoom?

optional minZoom: number | null

Defined in: src/ui/map.ts:147

The minimum zoom level of the map (0-24).

Default Value

0

pitch?

optional pitch: number

Defined in: src/ui/map.ts:232

The initial pitch (tilt) of the map, measured in degrees away from the plane of the screen (0-85). If pitch is not specified in the constructor options, TrackAsia GL JS will look for it in the map's style object. If it is not specified in the style, either, it will default to 0. Values greater than 60 degrees are experimental and may result in rendering issues. If you encounter any, please raise an issue with details in the TrackAsia project.

Default Value

0

pitchWithRotate?

optional pitchWithRotate: boolean

Defined in: src/ui/map.ts:323

If false, the map's pitch (tilt) control with "drag to rotate" interaction will be disabled.

Default Value

true

pixelRatio?

optional pixelRatio: number

Defined in: src/ui/map.ts:333

The pixel ratio. The canvas' width attribute will be container.clientWidth * pixelRatio and its height attribute will be container.clientHeight * pixelRatio. Defaults to devicePixelRatio if not specified.

refreshExpiredTiles?

optional refreshExpiredTiles: boolean

Defined in: src/ui/map.ts:133

If false, the map won't attempt to re-request tiles once they expire per their HTTP cacheControl/expires headers.

Default Value

true

renderWorldCopies?

optional renderWorldCopies: boolean

Defined in: src/ui/map.ts:247

If true, multiple copies of the world will be rendered side by side beyond -180 and 180 degrees longitude. If set to false:

  • When the map is zoomed out far enough that a single representation of the world does not fill the map's entire container, there will be blank space beyond 180 and -180 degrees longitude.
  • Features that cross 180 and -180 degrees longitude will be cut in two (with one portion on the right edge of the map and the other on the left edge of the map) at every zoom level.

Default Value

true

roll?

optional roll: number

Defined in: src/ui/map.ts:237

The initial roll angle of the map, measured in degrees counter-clockwise about the camera boresight. If roll is not specified in the constructor options, TrackAsia GL JS will look for it in the map's style object. If it is not specified in the style, either, it will default to 0.

Default Value

0

rollEnabled?

optional rollEnabled: boolean

Defined in: src/ui/map.ts:328

If false, the map's roll control with "drag to rotate" interaction will be disabled.

Default Value

false

scrollZoom?

optional scrollZoom: boolean | AroundCenterOptions

Defined in: src/ui/map.ts:142

If true, the "scroll to zoom" interaction is enabled. AroundCenterOptions are passed as options to ScrollZoomHandler#enable.

Default Value

true

style?

optional style: StyleSpecification | string

Defined in: src/ui/map.ts:318

The map's TrackAsia style. This must be a JSON object conforming to the schema described in the TrackAsia Style Specification, or a URL to such JSON. When the style is not specified, calling Map#setStyle is required to render the map.

touchPitch?

optional touchPitch: boolean | AroundCenterOptions

Defined in: src/ui/map.ts:197

If true, the "drag to pitch" interaction is enabled. An Object value is passed as options to TwoFingersTouchPitchHandler#enable.

Default Value

true

touchZoomRotate?

optional touchZoomRotate: boolean | AroundCenterOptions

Defined in: src/ui/map.ts:192

If true, the "pinch to rotate and zoom" interaction is enabled. An Object value is passed as options to TwoFingersTouchZoomRotateHandler#enable.

Default Value

true

optional trackasiaLogo: boolean

Defined in: src/ui/map.ts:116

If true, the TrackAsia logo will be shown.

trackResize?

optional trackResize: boolean

Defined in: src/ui/map.ts:207

If true, the map will automatically resize when the browser window resizes.

Default Value

true

transformCameraUpdate?

optional transformCameraUpdate: CameraUpdateTransformFunction | null

Defined in: src/ui/map.ts:269

A callback run before the map's camera is moved due to user input or animation. The callback can be used to modify the new center, zoom, pitch and bearing. Expected to return an object containing center, zoom, pitch or bearing values to overwrite.

Default Value

null

transformRequest?

optional transformRequest: RequestTransformFunction | null

Defined in: src/ui/map.ts:263

A callback run before the Map makes a request for an external URL. The callback can be used to modify the url, set headers, or set the credentials property for cross-origin requests. Expected to return an object with a url property and optionally headers and credentials properties.

Default Value

null

validateStyle?

optional validateStyle: boolean

Defined in: src/ui/map.ts:338

If false, style validation will be skipped. Useful in production environment.

Default Value

true

zoom?

optional zoom: number

Defined in: src/ui/map.ts:222

The initial zoom level of the map. If zoom is not specified in the constructor options, TrackAsia GL JS will look for it in the map's style object. If it is not specified in the style, either, it will default to 0.

Default Value

0