MapLayerImageryProvider Class
Abstract class for map layer imagery providers. Map layer imagery providers request and provide tile images and other data. Each map layer from a separate source needs its own imagery provider object.
Methods
| Name | Description | |
|---|---|---|
| constructor(_settings: ImageMapLayerSettings, _usesCachedTiles: boolean): MapLayerImageryProvider | ||
| _generateChildIds(quadId: QuadId, resolveChildren: (childIds: QuadId[]) => void): void Protected | Get child IDs of a quad and generate tiles based on these child IDs. | |
| addLogoCards(_cards: HTMLTableElement, _viewport: ScreenViewport): void | Add attribution logo cards for the data supplied by this provider to the Viewport's logo div. | |
| constructUrl(row: number, column: number, zoomLevel: number): Promise<string> Abstract | ||
| initialize(): Promise<void> | Initialize the provider by loading the first tile at its default maximum zoom level. | |
| loadTile(row: number, column: number, zoomLevel: number): Promise<undefined | ImageSource> | Returns a map layer tile at the specified settings. | |
| resetStatus(): void |
Properties
| Name | Type | Description | |
|---|---|---|---|
| _hasSuccessfullyFetchedTile Protected | boolean | ||
| _settings ProtectedReadonly | ImageMapLayerSettings | ||
| _usesCachedTiles Protected | boolean | ||
| cartoRange | undefined | MapCartoRectangle | ||
| maximumZoomLevel Accessor ReadOnly | number | ||
| minimumZoomLevel Accessor ReadOnly | number | ||
| mutualExclusiveSubLayer Accessor ReadOnly | boolean | ||
| onStatusChanged Readonly | BeEvent<(provider: MapLayerImageryProvider) => void> | ||
| tilingScheme Accessor ReadOnly | MapTilingScheme |
Defined in
Last Updated: 25 April, 2024
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