Class Transformer

Transformer class that contains all matrices and is responsible for transforming values into pixels on the screen and backwards.

Hierarchy (View Summary)

Transformer
- TransformerHorizontalBarChart

Constructors

constructor

new Transformer(viewPortHandler: ViewPortHandler): Transformer
Parameters
- viewPortHandler: ViewPortHandler
Returns Transformer
- Defined in packages/ui-chart/utils/Transformer.d.ts:30

Properties

`Protected`mMatrixOffset

mMatrixOffset: Matrix

matrix for handling the different offsets of the chart

`Protected`mMatrixValueToPx

mMatrixValueToPx: Matrix

matrix to map the values to the screen pixels

`Protected`mPixelToValueMatrixBuffer

mPixelToValueMatrixBuffer: Matrix

`Protected`mValuePointsForGenerateTransformedValues

mValuePointsForGenerateTransformedValues: TypedArray

`Protected`mValuePointsForGenerateTransformedValuesBubble

mValuePointsForGenerateTransformedValuesBubble: TypedArray

`Protected`mValuePointsForGenerateTransformedValuesCandle

mValuePointsForGenerateTransformedValuesCandle: TypedArray

`Protected`mValuePointsForGenerateTransformedValuesScatter

mValuePointsForGenerateTransformedValuesScatter: TypedArray

`Protected`mViewPortHandler

mViewPortHandler: ViewPortHandler

Methods

generateTransformedValues

generateTransformedValues(
    dataSet: IDataSet<Entry>,
    phaseX: any,
    phaseY: any,
    from: any,
    to: any,
): { count: number; points: number[] | TypedArray }
Transforms an List of Entry into a let array containing the x and y values transformed with all matrices for the BUBBLECHART.
Parameters
- dataSet: IDataSet<Entry>
- phaseX: any
- phaseY: any
- from: any
- to: any
Returns { count: number; points: number[] | TypedArray }
- Defined in packages/ui-chart/utils/Transformer.d.ts:76

generateTransformedValuesBubble

generateTransformedValuesBubble(
    dataSet: BubbleDataSet,
    phaseY: any,
    from: any,
    to: any,
): { count: number; points: number[] | TypedArray }
Transforms an List of Entry into a float array containing the x and y values transformed with all matrices for the BUBBLECHART.
Parameters
- dataSet: BubbleDataSet
- phaseY: any
- from: any
- to: any
Returns { count: number; points: number[] | TypedArray }
- Defined in packages/ui-chart/utils/Transformer.d.ts:65

generateTransformedValuesCandle

generateTransformedValuesCandle(
    dataSet: CandleDataSet,
    phaseX: any,
    phaseY: any,
    from: any,
    to: any,
): { count: number; points: number[] | TypedArray }
Transforms an List of Entry into a let array containing the x and y values transformed with all matrices for the CANDLESTICKCHART.
Parameters
- dataSet: CandleDataSet
- phaseX: any
- phaseY: any
- from: any
- to: any
Returns { count: number; points: number[] | TypedArray }
- Defined in packages/ui-chart/utils/Transformer.d.ts:87

generateTransformedValuesScatter

generateTransformedValuesScatter(
    dataSet: IDataSet<Entry>,
    phaseX: any,
    phaseY: any,
    from: any,
    to: any,
): { count: number; points: number[] | TypedArray }
Transforms an List of Entry into a let array containing the x and y values transformed with all matrices for the SCATTERCHART.
Parameters
- dataSet: IDataSet<Entry>
- phaseX: any
- phaseY: any
- from: any
- to: any
Returns { count: number; points: number[] | TypedArray }
- Defined in packages/ui-chart/utils/Transformer.d.ts:54

getOffsetMatrix

getOffsetMatrix(): Matrix
Returns Matrix
- Defined in packages/ui-chart/utils/Transformer.d.ts:172

getPixelForValues

getPixelForValues(x: any, y: any): { x: number; y: number }
Returns a recyclable MPPointD instance. Returns the x and y coordinates (pixels) for a given x and y value in the chart.
Parameters
- x: any
- y: any
Returns { x: number; y: number }
- Defined in packages/ui-chart/utils/Transformer.d.ts:167

getPixelToValueMatrix

getPixelToValueMatrix(): Matrix
Returns Matrix
- Defined in packages/ui-chart/utils/Transformer.d.ts:174

getValueMatrix

getValueMatrix(): Matrix
Returns Matrix
- Defined in packages/ui-chart/utils/Transformer.d.ts:171

getValuesByTouchPoint

getValuesByTouchPoint(x: any, y: any, outputPoint?: any): any
Returns a recyclable MPPointD instance. returns the x and y values in the chart at the given touch point (encapsulated in a MPPointD). This method transforms pixel coordinates to coordinates / values in the chart. This is the opposite method to getPixelForValues(...).
Parameters
- x: any
- y: any
- OptionaloutputPoint: any
Returns any
- Defined in packages/ui-chart/utils/Transformer.d.ts:158

getValueToPixelMatrix

getValueToPixelMatrix(): Matrix
Returns Matrix
- Defined in packages/ui-chart/utils/Transformer.d.ts:173

mapPoints

mapPoints(matrix: Matrix, pts: number[] | TypedArray): void
Parameters
- matrix: Matrix
- pts: number[] | TypedArray
Returns void
- Defined in packages/ui-chart/utils/Transformer.d.ts:104

pathValuesToPixel

pathValuesToPixel(paths: Path[]): void
Transforms multiple paths will all matrices.
Parameters
- paths: Path[]
Returns void
- Defined in packages/ui-chart/utils/Transformer.d.ts:103

pathValueToPixel

pathValueToPixel(path: Path): void
transform a path with all the given matrices VERY IMPORTANT: keep order to value-touch-offset
Parameters
- path: Path
Returns void
- Defined in packages/ui-chart/utils/Transformer.d.ts:97

pixelsToValue

pixelsToValue(pixels: any): void
Transforms the given array of touch positions (pixels) (x, y, x, y, ...) into values on the chart.
Parameters
- pixels: any
Returns void
- Defined in packages/ui-chart/utils/Transformer.d.ts:146

pointValuesToPixel

pointValuesToPixel(pts: number[] | TypedArray): void
Transform an array of points with all matrices. VERY IMPORTANT: Keep matrix order "value-touch-offset" when transforming.
Parameters
- pts: number[] | TypedArray
Returns void
- Defined in packages/ui-chart/utils/Transformer.d.ts:111

prepareMatrixOffset

prepareMatrixOffset(inverted: any): void
Prepares the matrix that contains all offsets.
Parameters
- inverted: any
Returns void
- Defined in packages/ui-chart/utils/Transformer.d.ts:46

prepareMatrixValuePx

prepareMatrixValuePx(
    xChartMin: any,
    deltaX: any,
    deltaY: any,
    yChartMin: any,
): void
Prepares the matrix that transforms values to pixels. Calculates the scale factors from the charts size and offsets.
Parameters
- xChartMin: any
- deltaX: any
- deltaY: any
- yChartMin: any
Returns void
- Defined in packages/ui-chart/utils/Transformer.d.ts:40

rectToPixelPhase

rectToPixelPhase(r: Rect, phaseY: any): void
Transform a rectangle with all matrices with potential animation phases.
Parameters
- r: Rect
- phaseY: any
Returns void
- Defined in packages/ui-chart/utils/Transformer.d.ts:124

rectToPixelPhaseHorizontal

rectToPixelPhaseHorizontal(r: Rect, phaseY: any): void
Parameters
- r: Rect
- phaseY: any
Returns void
- Defined in packages/ui-chart/utils/Transformer.d.ts:125

rectValuesToPixel

rectValuesToPixel(rects: Rect[]): void
transforms multiple rects with all matrices
Parameters
- rects: Rect[]
Returns void
- Defined in packages/ui-chart/utils/Transformer.d.ts:138

rectValueToPixel

rectValueToPixel(r: any): void
Transform a rectangle with all matrices.
Parameters
- r: any
Returns void
- Defined in packages/ui-chart/utils/Transformer.d.ts:117

rectValueToPixelHorizontal

rectValueToPixelHorizontal(r: Rect, phaseY?: any): void
Transform a rectangle with all matrices with potential animation phases.
Parameters
- r: Rect
- OptionalphaseY: any
Returns void
- Defined in packages/ui-chart/utils/Transformer.d.ts:132

Class Transformer

Hierarchy (View Summary)

Index

Constructors

Properties

Methods

Constructors

constructor

Parameters

Returns Transformer

Properties

ProtectedmMatrixOffset

ProtectedmMatrixValueToPx

ProtectedmPixelToValueMatrixBuffer

ProtectedmValuePointsForGenerateTransformedValues

ProtectedmValuePointsForGenerateTransformedValuesBubble

ProtectedmValuePointsForGenerateTransformedValuesCandle

ProtectedmValuePointsForGenerateTransformedValuesScatter

ProtectedmViewPortHandler

Methods

generateTransformedValues

Parameters

Returns { count: number; points: number[] | TypedArray }

generateTransformedValuesBubble

Parameters

Returns { count: number; points: number[] | TypedArray }

generateTransformedValuesCandle

Parameters

Returns { count: number; points: number[] | TypedArray }

generateTransformedValuesScatter

Parameters

Returns { count: number; points: number[] | TypedArray }

getOffsetMatrix

Returns Matrix

getPixelForValues

Parameters

Returns { x: number; y: number }

getPixelToValueMatrix

Returns Matrix

getValueMatrix

Returns Matrix

getValuesByTouchPoint

Parameters

Returns any

getValueToPixelMatrix

Returns Matrix

mapPoints

Parameters

Returns void

pathValuesToPixel

Parameters

Returns void

pathValueToPixel

Parameters

Returns void

pixelsToValue

Parameters

Returns void

pointValuesToPixel

Parameters

Returns void

prepareMatrixOffset

Parameters

Returns void

prepareMatrixValuePx

Parameters

Returns void

rectToPixelPhase

Parameters

Returns void

rectToPixelPhaseHorizontal

Parameters

Returns void

rectValuesToPixel

Parameters

Returns void

rectValueToPixel

Parameters

Returns void

rectValueToPixelHorizontal

`Protected`mMatrixOffset

`Protected`mMatrixValueToPx

`Protected`mPixelToValueMatrixBuffer

`Protected`mValuePointsForGenerateTransformedValues

`Protected`mValuePointsForGenerateTransformedValuesBubble

`Protected`mValuePointsForGenerateTransformedValuesCandle

`Protected`mValuePointsForGenerateTransformedValuesScatter

`Protected`mViewPortHandler