DiscardColorTileImagePolicy

new Cesium.DiscardColorTileImagePolicy()

If the picture pixel is greater than the value set by the transparency, the texture corresponding to the slice will not be created, and the search for a parent node will be discarded.
See:

Methods

isReady() → Boolean

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

Given a tile image, decide whether to discard that image.
Name Type Description
image Image 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.