KBE3D / KBCore / Cesium / DiscardMissingTileImagePolicy

类: DiscardMissingTileImagePolicy

A policy for discarding tile images that match a known image containing a "missing" image.

参数

Object with the following properties:

参数

The URL of the known missing image.

参数

An array of Cartesian2 pixel positions to compare against the missing image.

参数

If true, the discard check will be disabled if all of the pixelsToCheck in the missingImageUrl have an alpha value of 0. If false, the discard check will proceed no matter the values of the pixelsToCheck.

方法

isReady()

isReady(): boolean

Determines if the discard policy is ready to process images.

返回

boolean

True if the discard policy is ready to process images; otherwise, false.

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shouldDiscardImage()

shouldDiscardImage(image: HTMLImageElement): boolean

Given a tile image, decide whether to discard that image.

参数

image

HTMLImageElement

An image to test.

返回

boolean

True if the image should be discarded; otherwise, false.

构造函数

构造函数

new DiscardMissingTileImagePolicy(options: { missingImageUrl: string | Resource; pixelsToCheck: Cartesian2[]; disableCheckIfAllPixelsAreTransparent?: boolean; }): DiscardMissingTileImagePolicy

参数

options

missingImageUrl

string | Resource

pixelsToCheck

Cartesian2[]

disableCheckIfAllPixelsAreTransparent?

boolean

返回

DiscardMissingTileImagePolicy