Class DataTransform

数据类型转换 TypeArray、ArrayBuffer、Blob、File、DataURL、canvas的相互转换

See

http://blog.csdn.net/yinwhm12/article/details/73482904

Hierarchy

DataTransform

Constructors

constructor

new DataTransform(): DataTransform
Returns DataTransform

Methods

arrayBufferToBlob

arrayBufferToBlob(arrayBuffer): Blob
ArrayBuffer to Blob
Parameters
- arrayBuffer: ArrayBuffer
Returns Blob
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:14

arrayBufferToDataURL

arrayBufferToDataURL(arrayBuffer): Promise<string>
Parameters
- arrayBuffer: ArrayBuffer
Returns Promise<string>
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:52

arrayBufferToImage

arrayBufferToImage(arrayBuffer): Promise<HTMLImageElement>
Parameters
- arrayBuffer: ArrayBuffer
Returns Promise<HTMLImageElement>
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:60

arrayBufferToObject

arrayBufferToObject(arrayBuffer): Promise<any>
ArrayBuffer 转换为对象
Parameters
- arrayBuffer: ArrayBuffer
Returns Promise<any>
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:69

arrayBufferToString

arrayBufferToString(arrayBuffer): Promise<string>
Parameters
- arrayBuffer: ArrayBuffer
Returns Promise<string>
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:63

arrayBufferToUint8

arrayBufferToUint8(arrayBuffer): Uint8Array
ArrayBuffer to Uint8 Uint8数组可以直观的看到ArrayBuffer中每个字节（1字节 === 8位）的值。一般我们要将ArrayBuffer转成Uint类型数组后才能对其中的字节进行存取操作。
Parameters
- arrayBuffer: ArrayBuffer
Returns Uint8Array
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:19

arrayToArrayBuffer

arrayToArrayBuffer(array): ArrayBuffer
Array to ArrayBuffer
Parameters
- array: number[]
  
  例如：[0x15, 0xFF, 0x01, 0x00, 0x34, 0xAB, 0x11];
Returns ArrayBuffer
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:29

blobToArrayBuffer

blobToArrayBuffer(blob): Promise<ArrayBuffer>
Blob to ArrayBuffer
Parameters
- blob: Blob
Returns Promise<ArrayBuffer>
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:10

blobToDataURL

blobToDataURL(blob): Promise<string>
File、Blob对象转换为dataURL File对象也是一个Blob对象，二者的处理相同。
Parameters
- blob: Blob
Returns Promise<string>
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:46

blobToText

blobToText(blob): Promise<string>
Parameters
- blob: Blob
Returns Promise<string>
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:61

canvasToDataURL

canvasToDataURL(canvas, type?, quality?): string
canvas转换为dataURL
Parameters
- canvas: HTMLCanvasElement
- Optional type: "png" | "jpeg"
- Optional quality: number
Returns string
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:37

canvasToImage

canvasToImage(canvas, type?, quality?): Promise<HTMLImageElement>
canvas转换为图片
Parameters
- canvas: HTMLCanvasElement
- Optional type: "png" | "jpeg"
- Optional quality: number
Returns Promise<HTMLImageElement>
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:41

dataURLToArrayBuffer

dataURLToArrayBuffer(dataurl): Promise<ArrayBuffer>
Parameters
- dataurl: string
Returns Promise<ArrayBuffer>
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:51

dataURLToImage

dataURLToImage(dataurl): Promise<HTMLImageElement>
Parameters
- dataurl: string
Returns Promise<HTMLImageElement>
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:53

dataURLtoBlob

dataURLtoBlob(dataurl): Blob
dataURL转换为Blob对象
Parameters
- dataurl: string
Returns Blob
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:50

imageDataToCanvas

imageDataToCanvas(imageData): HTMLCanvasElement
Parameters
- imageData: ImageData
Returns HTMLCanvasElement
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:58

imageDataToDataURL

imageDataToDataURL(imageData, quality?): string
Parameters
- imageData: ImageData
- Optional quality: number
Returns string
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:57

imageToArrayBuffer

imageToArrayBuffer(img): Promise<ArrayBuffer>
Parameters
- img: HTMLImageElement
Returns Promise<ArrayBuffer>
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:56

imageToCanvas

imageToCanvas(img): HTMLCanvasElement
Parameters
- img: HTMLImageElement
Returns HTMLCanvasElement
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:55

imageToDataURL

imageToDataURL(img, quality?): string
Parameters
- img: HTMLImageElement
- Optional quality: number
Returns string
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:54

imagedataToImage

imagedataToImage(imageData, quality?): Promise<HTMLImageElement>
Parameters
- imageData: ImageData
- Optional quality: number
Returns Promise<HTMLImageElement>
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:59

stringToArrayBuffer

stringToArrayBuffer(str): ArrayBuffer
Parameters
- str: string
Returns ArrayBuffer
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:62

stringToUint8Array

stringToUint8Array(str): Uint8Array
Parameters
- str: string
Returns Uint8Array
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:70

uint8ArrayToArray

uint8ArrayToArray(u8a): number[]
TypeArray to Array
Parameters
- u8a: Uint8Array
Returns number[]
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:33

uint8ArrayToString

uint8ArrayToString(arr): string
Parameters
- arr: Uint8Array
Returns string
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:71

uint8ToArrayBuffer

uint8ToArrayBuffer(uint8Array): ArrayBuffer
Uint8 to ArrayBuffer 我们Uint8数组可以直观的看到ArrayBuffer中每个字节（1字节 === 8位）的值。一般我们要将ArrayBuffer转成Uint类型数组后才能对其中的字节进行存取操作。
Parameters
- uint8Array: Uint8Array
Returns ArrayBuffer
- Defined in node_modules/@feng3d/polyfill/lib/DataTransform.d.ts:24

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