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OpenLayers v10.6.1 API - Class: TileDebug

This documentation is for OpenLayers v

. The

is v

.

import TileDebug from 'ol/source/TileDebug.js';

A pseudo tile source, which does not fetch tiles from a server, but renders a grid outline for the tile grid/projection along with the coordinates for each tile. See examples/canvas-tiles for an example.

Name Type Description projection ProjectionLike (defaults to 'EPSG:3857')

Optional projection.

tileGrid TileGrid | undefined

Tile grid.

wrapX boolean (defaults to true)

Whether to wrap the world horizontally.

zDirection number | NearestDirectionFunction (defaults to 0)

Set to 1 when debugging VectorTile sources with a default configuration. Choose whether to use tiles with a higher or lower zoom level when between integer zoom levels. See getZForResolution.

source TileSource | undefined

Tile source. This allows projection, tileGrid, wrapX and zDirection to be copied from another source. If both source and individual options are specified the individual options will have precedence.

template string (defaults to 'z:{z} x:{x} y:{y}')

Template for labeling the tiles. Should include {x}, {y} or {-y}, and {z} placeholders.

color string (defaults to 'grey')

CSS color to fill text and stroke grid lines of each tile.

Fires:

• change (BaseEvent) - Generic change event. Triggered when the revision counter is increased.
• error (BaseEvent) - Generic error event. Triggered when an error occurs.
• propertychange (ObjectEvent) - Triggered when a property is changed.
• tileloadend (TileSourceEvent) - Triggered when a tile finishes loading, either when its data is loaded, or when loading was aborted because the tile is no longer needed.
• tileloaderror (TileSourceEvent) - Triggered if tile loading results in an error. Note that this is not the right place to re-fetch tiles. See load for details.
• tileloadstart (TileSourceEvent) - Triggered when a tile starts loading.

• ImageTileSource

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

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

dispatchEvent(event){boolean | undefined} inherited

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.

Gets a value.

Name Type Description key string

Key name.

Returns: Value.

Get the attribution function for the source.

Returns: Attribution function.

getAttributionsCollapsible(){boolean} inherited

Returns: Attributions are collapsible.

Get a list of object property names.

Returns: List of property names.

Get the projection of the source.

Returns: Projection.

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

Get an object of all property names and values.

Returns: Object.

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

Returns: Revision.

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

Returns: State.

Return the tile grid of the tile source.

Returns: Tile grid.

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.

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.

Sets a value.

Name Type Description key string

Key name.

value *

Value.

silent boolean | undefined

Update without triggering an event.

Set the attributions of the source.

Name Type Description attributions AttributionLike | undefined

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

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

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.

Name Type Description url UrlLike

The new URL.

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.

Unsets a property.

Name Type Description key string

Key name.

silent boolean | undefined

Unset without triggering an event.

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