Class TileCache

瓦片缓存类（LRU策略）

Index

Constructors

Accessors

Methods

has hasCoord get getByCoord set setByCoord delete deleteByCoord evict clear keys coords getStats deleteByZoomLevel tileKey

Constructors

constructor

new TileCache(maxSize?: number, autoDestroyTexture?: boolean): TileCache
构造函数
Parameters
- maxSize: number = 200
  最大缓存条目数，默认200
- autoDestroyTexture: boolean = true
  是否自动销毁被淘汰的纹理，默认true
Returns TileCache
- Defined in tile/TileCache.ts:42

Accessors

size

get size(): number
获取当前缓存大小

Returns number
- Defined in tile/TileCache.ts:50

maxSize

get maxSize(): number
获取最大缓存大小

Returns number
- Defined in tile/TileCache.ts:55
set maxSize(value: number): void
设置最大缓存大小
Parameters
- value: number
Returns void
- Defined in tile/TileCache.ts:60

Methods

has

has(key: string): boolean
检查缓存中是否存在指定key
Parameters
- key: string
  瓦片key
Returns boolean
是否存在
- Defined in tile/TileCache.ts:73

hasCoord

hasCoord(coord: TileCoord): boolean
检查缓存中是否存在指定坐标的瓦片
Parameters
- coord: TileCoord
  瓦片坐标
Returns boolean
是否存在
- Defined in tile/TileCache.ts:82

get

get(key: string): Texture<TextureSource<any>>
获取缓存的纹理
Parameters
- key: string
  瓦片key
Returns Texture<TextureSource<any>>
纹理对象，不存在返回undefined
- Defined in tile/TileCache.ts:91

getByCoord

getByCoord(coord: TileCoord): Texture<TextureSource<any>>
根据坐标获取缓存的纹理
Parameters
- coord: TileCoord
  瓦片坐标
Returns Texture<TextureSource<any>>
纹理对象
- Defined in tile/TileCache.ts:108

set

set(key: string, texture: Texture, coord?: TileCoord, url?: string): void
设置缓存
Parameters
- key: string
  瓦片key
- texture: Texture
  纹理对象
- Optionalcoord: TileCoord
  瓦片坐标（可选）
- Optionalurl: string
  加载URL（用于Assets.unload）
Returns void
- Defined in tile/TileCache.ts:119

setByCoord

setByCoord(coord: TileCoord, texture: Texture): void
根据坐标设置缓存
Parameters
- coord: TileCoord
  瓦片坐标
- texture: Texture
  纹理对象
Returns void
- Defined in tile/TileCache.ts:146

delete

delete(key: string): boolean
删除缓存条目
Parameters
- key: string
  瓦片key
Returns boolean
是否删除成功
- Defined in tile/TileCache.ts:155

deleteByCoord

deleteByCoord(coord: TileCoord): boolean
根据坐标删除缓存
Parameters
- coord: TileCoord
  瓦片坐标
Returns boolean
是否删除成功
- Defined in tile/TileCache.ts:174

evict

evict(): string
淘汰最久未使用的缓存条目

Returns string
被淘汰的key，如果缓存为空返回undefined
- Defined in tile/TileCache.ts:182

clear

clear(): void
清空所有缓存

Returns void
- Defined in tile/TileCache.ts:205

keys

keys(): string[]
获取所有缓存的key

Returns string[]
key数组
- Defined in tile/TileCache.ts:222

coords

coords(): TileCoord[]
获取所有缓存的坐标

Returns TileCoord[]
坐标数组
- Defined in tile/TileCache.ts:230

getStats

getStats(): { size: number; maxSize: number; hitRate?: number }
获取缓存统计信息

Returns { size: number; maxSize: number; hitRate?: number }
- Defined in tile/TileCache.ts:237

deleteByZoomLevel

deleteByZoomLevel(zoomLevel: number): number
批量删除指定缩放级别的所有瓦片
Parameters
- zoomLevel: number
  缩放级别
Returns number
删除的数量
- Defined in tile/TileCache.ts:249

`Static`tileKey

tileKey(coord: TileCoord): string
静态方法：生成瓦片key
Parameters
- coord: TileCoord
Returns string
- Defined in tile/TileCache.ts:301