Class FeatureTileCanvas

Feature Tile Canvas for creating layered tiles to draw ordered features. Draw Order: polygons, lines, points, icons

Hierarchy

FeatureTileCanvas

Index

Constructors

Methods

createTile dispose getIconCanvas getLineCanvas getPointCanvas getPolygonCanvas

Constructors

constructor

new FeatureTileCanvas(tileWidth: number, tileHeight: number, canvas?: HTMLCanvasElement | OffscreenCanvas | EmulatedCanvas2D): FeatureTileCanvas
Constructor
Parameters
- tileWidth: number
  
  tile width
- tileHeight: number
  
  tile height
- Optional canvas: HTMLCanvasElement | OffscreenCanvas | EmulatedCanvas2D
  
  user provided canvas (must match size)
Returns FeatureTileCanvas
- Defined in lib/tiles/features/featureTileCanvas.ts:68

Methods

createTile

createTile(): Promise<GeoPackageTile>
Create the final image from the layers, resets the layers

Returns
image

Returns Promise<GeoPackageTile>
- Defined in lib/tiles/features/featureTileCanvas.ts:121

dispose

dispose(): void
Dispose of the layered graphics and images

Returns void
- Defined in lib/tiles/features/featureTileCanvas.ts:164

getIconCanvas

getIconCanvas(): HTMLCanvasElement | OffscreenCanvas | EmulatedCanvas2D
Get the icon canvas

Returns
icon canvas

Returns HTMLCanvasElement | OffscreenCanvas | EmulatedCanvas2D
- Defined in lib/tiles/features/featureTileCanvas.ts:113

getLineCanvas

getLineCanvas(): HTMLCanvasElement | OffscreenCanvas | EmulatedCanvas2D
Get the line graphics

Returns
line graphics

Returns HTMLCanvasElement | OffscreenCanvas | EmulatedCanvas2D
- Defined in lib/tiles/features/featureTileCanvas.ts:95

getPointCanvas

getPointCanvas(): HTMLCanvasElement | OffscreenCanvas | EmulatedCanvas2D
Get the point graphics

Returns
point graphics

Returns HTMLCanvasElement | OffscreenCanvas | EmulatedCanvas2D
- Defined in lib/tiles/features/featureTileCanvas.ts:104

getPolygonCanvas

getPolygonCanvas(): HTMLCanvasElement | OffscreenCanvas | EmulatedCanvas2D
Get the polygon graphics

Returns
polygon graphics

Returns HTMLCanvasElement | OffscreenCanvas | EmulatedCanvas2D
- Defined in lib/tiles/features/featureTileCanvas.ts:86

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