Class: ImageTileSource

ol/source/ImageTile~ImageTileSource 


import ImageTileSource from 'ol/source/ImageTile.js';

A source for typed array data tiles.

new ImageTileSource(options)

source/ImageTile.js, line 146
Name Type Description
url UrlLike | undefined

The image URL template. In addition to a single URL template, an array of URL templates or a function can be provided. If a function is provided, it will be called with z, x, y tile coordinates and loader options and should return a URL.
loader Loader | undefined

Data loader. Called with z, x, and y tile coordinates. Returns an image for a tile or a promise for the same. The promise should not resolve until the image is loaded. If the url option is provided, a loader will be created.
attributions AttributionLike | undefined

Attributions.
attributionsCollapsible boolean (defaults to true)

Attributions are collapsible.
maxZoom number (defaults to 42)

Optional max zoom level. Not used if tileGrid is provided.
minZoom number (defaults to 0)

Optional min zoom level. Not used if tileGrid is provided.
tileSize number | Size (defaults to [256, 256])

The pixel width and height of the source tiles. This may be different than the rendered pixel size if a tileGrid is provided.
gutter number (defaults to 0)

The size in pixels of the gutter around data tiles to ignore. This allows artifacts of rendering at tile edges to be ignored. Supported data should be wider and taller than the tile size by a value of 2 x gutter.
maxResolution number | undefined

Optional tile grid resolution at level zero. Not used if tileGrid is provided.
projection ProjectionLike (defaults to 'EPSG:3857')

Tile projection.
tileGrid TileGrid | undefined

Tile grid.
state State | undefined

The source state.
wrapX boolean (defaults to true)

Render tiles beyond the antimeridian.
transition number | undefined

Transition time when fading in new tiles (in miliseconds).
interpolate boolean (defaults to true)

Use interpolated values when resampling.
crossOrigin CrossOriginAttribute (defaults to 'anonymous')

The crossOrigin property to pass to loaders for image data.
zDirection number | NearestDirectionFunction (defaults to 0)

Choose whether to use tiles with a higher or lower zoom level when between integer zoom levels. See getZForResolution.
Fires:

Subclasses

Extends

Methods

changed() inherited

Observable.js, line 68

Increases the revision counter and dispatches a 'change' event.

clear() inherited

source/Tile.js, line 257

Remove all cached reprojected tiles from the source. The next render cycle will create new tiles.

dispatchEvent(event){boolean | undefined} inherited

events/Target.js, line 85

Dispatches an event and calls all listeners listening for events of this type. The event parameter can either be a string or an Object with a type property.

Name Type Description
event BaseEvent | string

Event object.
Returns:
false if anyone called preventDefault on the event object or if any of the listeners returned false.

get(key){*} inherited

Object.js, line 135

Gets a value.

Name Type Description
key string

Key name.
Returns:
Value.

getAttributions(){Attribution} inherited

source/Source.js, line 129

Get the attribution function for the source.

Returns:
Attribution function.

getAttributionsCollapsible(){boolean} inherited

source/Source.js, line 137
Returns:
Attributions are collapsible.

getKeys(){Array.<string>} inherited

Object.js, line 148

Get a list of object property names.

Returns:
List of property names.

getProjection(){Projection | null} inherited

source/Source.js, line 146

Get the projection of the source.

Returns:
Projection.

getProperties(){Object.<string, *>} inherited

Object.js, line 157

Get an object of all property names and values.

Returns:
Object.

getRevision(){number} inherited

Observable.js, line 79

Get the version number for this object. Each time the object is modified, its version number will be incremented.

Returns:
Revision.

getState(){State} inherited

source/Source.js, line 170

Get the state of the source, see State for possible states.

Returns:
State.

getTileGrid(){TileGrid | null} inherited

source/Tile.js, line 189

Return the tile grid of the tile source.

Returns:
Tile grid.

on(type, listener){EventsKey | Array<EventsKey>} inherited

Observable.js, line 152

Listen for a certain type of event.

Name Type Description
type string | Array.<string>

The event type or array of event types.
listener function

The listener function.
Returns:
Unique key for the listener. If called with an array of event types as the first argument, the return will be an array of keys.

once(type, listener){EventsKey | Array<EventsKey>} inherited

Observable.js, line 164

Listen once for a certain type of event.

Name Type Description
type string | Array.<string>

The event type or array of event types.
listener function

The listener function.
Returns:
Unique key for the listener. If called with an array of event types as the first argument, the return will be an array of keys.

set(key, value, silent) inherited

Object.js, line 215

Sets a value.

Name Type Description
key string

Key name.
value *

Value.
silent boolean | undefined

Update without triggering an event.

setAttributions(attributions) inherited

source/Source.js, line 203

Set the attributions of the source.

Name Type Description
attributions AttributionLike | undefined

Attributions. Can be passed as string, Array<string>, Attribution, or undefined.

setProperties(values, silent) inherited

Object.js, line 235

Sets a collection of key-value pairs. Note that this changes any existing properties and adds new ones (it does not remove any existing properties).

Name Type Description
values Object.<string, *>

Values.
silent boolean | undefined

Update without triggering an event.

setTileGridForProjection(projection, tilegrid) inherited

source/DataTile.js, line 407

Sets the tile grid to use when reprojecting the tiles to the given projection instead of the default tile grid for the projection.

This can be useful when the default tile grid cannot be created (e.g. projection has no extent defined) or for optimization reasons (custom tile size, resolutions, ...).

Name Type Description
projection ProjectionLike

Projection.
tilegrid TileGrid

Tile grid to use for the projection.

setUrl(url)

source/ImageTile.js, line 200
Name Type Description
url UrlLike

The new URL.

un(type, listener) inherited

Observable.js, line 173

Unlisten for a certain type of event.

Name Type Description
type string | Array.<string>

The event type or array of event types.
listener function

The listener function.

unset(key, silent) inherited

Object.js, line 259

Unsets a property.

Name Type Description
key string

Key name.
silent boolean | undefined

Unset without triggering an event.