Class ScaleTouchDataImpl

The implementation of the scale/pinch interaction data.

Hierarchy

TwoTouchDataImpl
- ScaleTouchDataImpl

Implements

ScaleTouchData

Index

Constructors

Properties

Accessors

diffClientX diffClientY diffPageX diffPageY diffScreenX diffScreenY touch1 touch2 touches

Methods

copyTouch flush initTouch scalingRatio velocity distance project

Constructors

constructor

new ScaleTouchDataImpl(): ScaleTouchDataImpl
Returns ScaleTouchDataImpl
Overrides TwoTouchDataImpl.constructor
- Defined in impl/interaction/ScaleTouchDataImpl.ts:23

Properties

`Protected` `Readonly` t1

t1: SrcTgtTouchDataImpl

`Protected` `Readonly` t2

t2: SrcTgtTouchDataImpl

Accessors

diffClientX

get diffClientX(): number
The translation vector between the x client position of the source and the y client position of the target.

Returns number
Implementation of ScaleTouchData.diffClientX
Inherited from TwoTouchDataImpl.diffClientX
- Defined in impl/interaction/TwoTouchDataImpl.ts:77

diffClientY

get diffClientY(): number
The translation vector between the y client position of the source and the y client position of the target.

Returns number
Implementation of ScaleTouchData.diffClientY
Inherited from TwoTouchDataImpl.diffClientY
- Defined in impl/interaction/TwoTouchDataImpl.ts:81

diffPageX

get diffPageX(): number
The translation vector between the x page position of the source and the x page position of the target.

Returns number
Implementation of ScaleTouchData.diffPageX
Inherited from TwoTouchDataImpl.diffPageX
- Defined in impl/interaction/TwoTouchDataImpl.ts:85

diffPageY

get diffPageY(): number
The translation vector between the y page position of the source and the y page position of the target.

Returns number
Implementation of ScaleTouchData.diffPageY
Inherited from TwoTouchDataImpl.diffPageY
- Defined in impl/interaction/TwoTouchDataImpl.ts:89

diffScreenX

get diffScreenX(): number
The translation vector between the x screen position of the source and the x screen position of the target.

Returns number
Implementation of ScaleTouchData.diffScreenX
Inherited from TwoTouchDataImpl.diffScreenX
- Defined in impl/interaction/TwoTouchDataImpl.ts:93

diffScreenY

get diffScreenY(): number
The translation vector between the y screen position of the source and the y screen position of the target.

Returns number
Implementation of ScaleTouchData.diffScreenY
Inherited from TwoTouchDataImpl.diffScreenY
- Defined in impl/interaction/TwoTouchDataImpl.ts:97

touch1

get touch1(): SrcTgtPointsData<TouchData>
The first touch

Returns SrcTgtPointsData<TouchData>
Implementation of ScaleTouchData.touch1
Inherited from TwoTouchDataImpl.touch1
- Defined in impl/interaction/TwoTouchDataImpl.ts:38

touch2

get touch2(): SrcTgtPointsData<TouchData>
The second touch

Returns SrcTgtPointsData<TouchData>
Implementation of ScaleTouchData.touch2
Inherited from TwoTouchDataImpl.touch2
- Defined in impl/interaction/TwoTouchDataImpl.ts:42

touches

get touches(): readonly SrcTgtPointsData<TouchData>[]
The list of touch data.

Returns readonly SrcTgtPointsData<TouchData>[]
Implementation of ScaleTouchData.touches
Inherited from TwoTouchDataImpl.touches
- Defined in impl/interaction/TwoTouchDataImpl.ts:46

Methods

copyTouch

copyTouch(data, evt, allTouches): void
Parameters
- data: Touch
- evt: EventModifierData & UnitInteractionData
- allTouches: Touch[]
Returns void
Inherited from TwoTouchDataImpl.copyTouch
- Defined in impl/interaction/TwoTouchDataImpl.ts:67

flush

flush(): void
Returns void
Inherited from TwoTouchDataImpl.flush
- Defined in impl/interaction/TwoTouchDataImpl.ts:50

initTouch

initTouch(data, evt, allTouches): void
Parameters
- data: Touch
- evt: EventModifierData & UnitInteractionData
- allTouches: Touch[]
Returns void
Inherited from TwoTouchDataImpl.initTouch
- Defined in impl/interaction/TwoTouchDataImpl.ts:55

scalingRatio

scalingRatio(pxTolerance): number
The computed scaling ratio. The distance between the end position of the touches divided the distance between the starting position of the touches.
Parameters
- pxTolerance: number
Returns number
Implementation of ScaleTouchData.scalingRatio
- Defined in impl/interaction/ScaleTouchDataImpl.ts:27

velocity

velocity(direction): number
The velocity of the move, in pixels per millisecond. For multi-touch, the velocity is the mean of all the touch velocities.
Parameters
- direction: "all" | "horiz" | "vert"
  The direciton to consider.
Returns number
Implementation of ScaleTouchData.velocity
Inherited from TwoTouchDataImpl.velocity
- Defined in impl/interaction/MultiTouchDataImpl.ts:28

`Static` distance

distance(point1, point2): number
Parameters
- point1: [number, number]
  The first point
- point2: [number, number]
  The second point
Returns number
the distance between point1 and point2
- Defined in impl/interaction/ScaleTouchDataImpl.ts:89

`Static` project

project(vector1, vector2): number
Parameters
- vector1: [number, number]
  The first vector of the projection
- vector2: [number, number]
  The second vector of the projection
Returns number
The value of the projection of vector1 on vector2
- Defined in impl/interaction/ScaleTouchDataImpl.ts:80

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