Class: MapCachedCanvasLayerCanvasInstanceClass

Defined in: src/sdk/components/map/layers/MapCachedCanvasLayer.ts:199

An implementation of MapCachedCanvasLayerCanvasInstance.

Extends

• MapCanvasLayerCanvasInstanceClass

Implements

• MapCachedCanvasLayerCanvasInstance

Constructors

Constructor

new MapCachedCanvasLayerCanvasInstanceClass(canvas, context, isDisplayed, getReferenceMargin): MapCachedCanvasLayerCanvasInstanceClass

Defined in: src/sdk/components/map/layers/MapCachedCanvasLayer.ts:223

Creates a new canvas instance.

Parameters

Parameter	Type	Description
canvas	HTMLCanvasElement	The canvas element.
context	CanvasRenderingContext2D	The canvas 2D rendering context.
isDisplayed	boolean	Whether the canvas is displayed.
getReferenceMargin	() => number	A function which gets this canvas instance's reference margin, in pixels. The reference margin is the maximum amount of translation allowed without invalidation at a scale factor of 1.

Returns

MapCachedCanvasLayerCanvasInstanceClass

Overrides

MapCanvasLayerCanvasInstanceClass.constructor

Properties

canvas

readonly canvas: HTMLCanvasElement

Defined in: src/sdk/components/map/layers/MapCanvasLayer.tsx:46

The canvas element.

Implementation of

MapCachedCanvasLayerCanvasInstance.canvas

Inherited from

MapCanvasLayerCanvasInstanceClass.canvas

---

context

readonly context: CanvasRenderingContext2D

Defined in: src/sdk/components/map/layers/MapCanvasLayer.tsx:47

The canvas 2D rendering context.

Implementation of

MapCachedCanvasLayerCanvasInstance.context

Inherited from

MapCanvasLayerCanvasInstanceClass.context

---

isDisplayed

readonly isDisplayed: boolean

Defined in: src/sdk/components/map/layers/MapCanvasLayer.tsx:48

Whether the canvas is displayed.

Implementation of

MapCachedCanvasLayerCanvasInstance.isDisplayed

Inherited from

MapCanvasLayerCanvasInstanceClass.isDisplayed

Accessors

geoProjection

Get Signature

get geoProjection(): GeoProjection

Defined in: src/sdk/components/map/layers/MapCachedCanvasLayer.ts:250

The projection used to draw this instance's canvas image.

Returns

GeoProjection

The projection used to draw this instance's canvas image.

Implementation of

MapCachedCanvasLayerCanvasInstance.geoProjection

---

isInvalid

Get Signature

get isInvalid(): boolean

Defined in: src/sdk/components/map/layers/MapCachedCanvasLayer.ts:245

Whether this instance's transform is invalid.

Returns

boolean

Whether this instance's transform is invalid.

Implementation of

MapCachedCanvasLayerCanvasInstance.isInvalid

---

reference

Get Signature

get reference(): MapCachedCanvasLayerReference

Defined in: src/sdk/components/map/layers/MapCachedCanvasLayer.ts:235

This instance's map projection reference. The rendering of items to this instance's canvas is based on this reference.

Returns

MapCachedCanvasLayerReference

This instance's map projection reference. The rendering of items to this instance's canvas is based on this reference.

Implementation of

MapCachedCanvasLayerCanvasInstance.reference

---

transform

Get Signature

get transform(): MapCachedCanvasLayerTransform

Defined in: src/sdk/components/map/layers/MapCachedCanvasLayer.ts:240

This instance's transform.

Returns

MapCachedCanvasLayerTransform

This instance's transform.

Implementation of

MapCachedCanvasLayerCanvasInstance.transform

Methods

clear()

clear(): void

Defined in: src/sdk/components/map/layers/MapCanvasLayer.tsx:53

Clears this canvas.

Returns

void

Implementation of

MapCachedCanvasLayerCanvasInstance.clear

Inherited from

MapCanvasLayerCanvasInstanceClass.clear

---

invalidate()

invalidate(): void

Defined in: src/sdk/components/map/layers/MapCachedCanvasLayer.ts:314

Invalidates this canvas instance. This also clears the canvas.

Returns

void

Implementation of

MapCachedCanvasLayerCanvasInstance.invalidate

---

reset()

reset(): void

Defined in: src/sdk/components/map/layers/MapCanvasLayer.tsx:58

Resets this instance's canvas. This will erase the canvas of all drawn pixels, reset its state (including all styles, transformations, and cached paths), and clear the Coherent GT command buffer associated with it.

Returns

void

Implementation of

MapCachedCanvasLayerCanvasInstance.reset

Inherited from

MapCanvasLayerCanvasInstanceClass.reset

---

syncWithCanvasInstance()

syncWithCanvasInstance(other): void

Defined in: src/sdk/components/map/layers/MapCachedCanvasLayer.ts:268

Syncs this canvas instance with another canvas instance.

Parameters

Parameter	Type	Description
other	MapCachedCanvasLayerCanvasInstance	the canvas instance with which to sync.

Returns

void

Implementation of

MapCachedCanvasLayerCanvasInstance.syncWithCanvasInstance

---

syncWithMapProjection()

syncWithMapProjection(mapProjection): void

Defined in: src/sdk/components/map/layers/MapCachedCanvasLayer.ts:255

Syncs this canvas instance with the current map projection.

Parameters

Parameter	Type	Description
mapProjection	MapProjection	The current map projection.

Returns

void

Implementation of

MapCachedCanvasLayerCanvasInstance.syncWithMapProjection

---

transformCanvasElement()

protected transformCanvasElement(): void

Defined in: src/sdk/components/map/layers/MapCachedCanvasLayer.ts:301

Transforms this instance's canvas element.

Returns

void

---

updateTransform()

updateTransform(mapProjection): void

Defined in: src/sdk/components/map/layers/MapCachedCanvasLayer.ts:283

Updates this canvas instance's transform given the current map projection.

Parameters

Parameter	Type	Description
mapProjection	MapProjection	The current map projection.

Returns

void