DiscardMissingTileImagePolicy

DiscardMissingTileImagePolicy

new

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

Parameters:
Name Type Argument Default Description
description.missingImageUrl String The URL of the known missing image.
description.pixelsToCheck Array An array of Cartesian2 pixel positions to compare against the missing image.
description.disableCheckIfAllPixelsAreTransparent Boolean <optional>
false 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.
Throws:
Source:

Methods

<static>

Determines if the discard policy is ready to process images.

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

<static>

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

Parameters:
Name Type Description
image Image An image to test.
Throws:
DeveloperError : shouldDiscardImage must not be called before the discard policy is ready.
Returns:
True if the image should be discarded; otherwise, false.