# TileDiscardPolicy

#### new Cesium.TileDiscardPolicy()
Scene/TileDiscardPolicy.js 18

  A policy for discarding tile images according to some criteria. This type describes an interface and is not intended to be instantiated directly.

  ##### See:

  - DiscardMissingTileImagePolicy
  - NeverTileDiscardPolicy

### Methods

#### isReady() → Boolean
Scene/TileDiscardPolicy.js 28

  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
Scene/TileDiscardPolicy.js 37

  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.