DiscardEmptyTileImagePolicy

new Cesium.DiscardEmptyTileImagePolicy()
@cesium/engine/Source/Scene/DiscardEmptyTileImagePolicy.js 13

A policy for discarding tile images that contain no data (and so aren't actually images). This policy discards DiscardEmptyTileImagePolicy.EMPTY_IMAGE, which is expected to be used in place of any empty tile images by the image loading code.
See:

Members

static readonly Cesium.DiscardEmptyTileImagePolicy.EMPTY_IMAGE : HTMLImageElement
@cesium/engine/Source/Scene/DiscardEmptyTileImagePolicy.js 42

Default value for representing an empty image.

Methods

isReady() → boolean
@cesium/engine/Source/Scene/DiscardEmptyTileImagePolicy.js 19

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

shouldDiscardImage(image) → boolean
@cesium/engine/Source/Scene/DiscardEmptyTileImagePolicy.js 29

Given a tile image, decide whether to discard that image.
Name Type Description
image HTMLImageElement An image to test.
Returns:
True if the image should be discarded; otherwise, false.
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