Class TerrainUtil

Hierarchy

TerrainUtil

Index

Constructors

Properties

offscreencanvas

Methods

clip getChildPosition getFromBitmap

Constructors

constructor

new TerrainUtil(): TerrainUtil
Returns TerrainUtil

Properties

`Static` `Private` offscreencanvas

offscreencanvas: OffscreenCanvas

Methods

`Static` clip

clip(sourceTerrain: Float32Array, sourceSize: number, x: number, y: number, size: number): Float32Array
从源地形数据中裁切出一部分

Returns
裁切后的地形数据
Parameters
- sourceTerrain: Float32Array
  
  源地形数据
- sourceSize: number
  
  源地形大小
- x: number
  
  裁切开始位置 x 坐标
- y: number
  
  裁切开始位置 y 坐标
- size: number
  
  裁切大小
Returns Float32Array
- Defined in src/Utils/TerrainUtil.ts:51

`Static` getChildPosition

getChildPosition(bigTileNo: number[], bigTileSize: number, smallTileNo: number[]): {
    bigBbox: number[];
    smallBbox: number[];
    x: number;
    y: number;
}
Parameters
- bigTileNo: number[]
- bigTileSize: number
- smallTileNo: number[]
Returns {
    bigBbox: number[];
    smallBbox: number[];
    x: number;
    y: number;
}
- bigBbox: number[]
- smallBbox: number[]
- x: number
- y: number
- Defined in src/Utils/TerrainUtil.ts:68

`Static` getFromBitmap

getFromBitmap(bitmap: ImageBitmap, size?: number): Float32Array
从图片中解码地形数据

Returns
地形数据
Parameters
- bitmap: ImageBitmap
  
  图像数据
- size: number = 256
  
  瓦片大小
Returns Float32Array
- Defined in src/Utils/TerrainUtil.ts:11

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