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Canvas2dFilterBackend

Constructors

new Canvas2dFilterBackend()

new Canvas2dFilterBackend(): Canvas2dFilterBackend

Returns

Canvas2dFilterBackend

Properties

resources

resources: TPipelineResources = {}

Experimental. This object is a sort of repository of help layers used to avoid of recreating them during frequent filtering. If you are previewing a filter with a slider you probably do not want to create help layers every filter step. in this object there will be appended some canvases, created once, resized sometimes cleared never. Clearing is left to the developer.

Defined in

src/filters/Canvas2dFilterBackend.ts:15

Methods

applyFilters()

applyFilters(filters, sourceElement, sourceWidth, sourceHeight, targetCanvas): void | T2DPipelineState

Apply a set of filters against a source image and draw the filtered output to the provided destination canvas.

Parameters

filters: BaseFilter<string, Record<string, any>>[]

The filter to apply.

sourceElement: CanvasImageSource

The source to be filtered.

sourceWidth: number

The width of the source input.

sourceHeight: number

The height of the source input.

targetCanvas: HTMLCanvasElement

The destination for filtered output to be drawn.

Returns

void | T2DPipelineState

Defined in

src/filters/Canvas2dFilterBackend.ts:27