A policy for discarding tile images that match a known image containing a
"missing" image.
Name | Type | Description | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
options |
Object |
Object with the following properties:
|
Methods
Determines if the discard policy is ready to process images.
Returns:
True if the discard policy is ready to process images; otherwise, false.
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.
Throws:
-
DeveloperError :
shouldDiscardImage
must not be called before the discard policy is ready.