SoScaleGestureEvent

java.lang.Object
- com.openinventor.inventor.Inventor
- - com.openinventor.inventor.events.SoEvent
  - - com.openinventor.inventor.gestures.events.SoGestureEvent
    - - com.openinventor.inventor.gestures.events.SoScaleGestureEvent

```
public class SoScaleGestureEvent
extends SoGestureEvent
```
Class for scale (pinch) gesture events. SoScaleGestureEvent represents a pinch gesture in the Open Inventor event model. Touch events are analyzed by a SoScaleGestureRecognizer. When a scale gesture is recognized, the recognizer generates this event. The gesture begins with a BEGIN state event. DELTA state events are generated until the end of the gesture which generates an END state event. See SoGestureEvent.getGestureState().
Note:
- In order to get touch events for the gesture recognizer(s) to recognize, the application must explicitly register a touch screen device (SoWinTouchScreen, SoQtTouchScreen, etc).
- In order to get gesture events, the application must explicitly register gesture recognizers with the touch screen device's touch manager (SoTouchManager).
See Also:

SoEvent, SoGestureEvent, SoDoubleTapGestureEvent, SoLongTapGestureEvent, SoRotateGestureEvent, SoScaleGestureRecognizer

Nested Class Summary
- Nested classes/interfaces inherited from class com.openinventor.inventor.gestures.events.SoGestureEvent
  SoGestureEvent.GestureStates
- Nested classes/interfaces inherited from class com.openinventor.inventor.Inventor
  Inventor.ConstructorCommand

Field Summary
- Fields inherited from class com.openinventor.inventor.Inventor
  VERBOSE_LEVEL, ZeroHandle

Constructor Summary

Constructors
Constructor Description

SoScaleGestureEvent()
Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`float`	`getDeltaScaleFactor()`	Gets the ratio between the current fingers distance and the previous distance.
`float`	`getScaleFactor()`	Gets the ratio between the current fingers distance and the first distance evaluated after the second down event.

Methods inherited from class com.openinventor.inventor.gestures.events.SoGestureEvent
getGestureState

Methods inherited from class com.openinventor.inventor.events.SoEvent
getNormalizedPosition, getPosition, getPosition, getPositionFloat, getPositionFloat, getTime, setAltDown, setButton1Down, setCtrlDown, setPosition, setPosition, setShiftDown, setTime, wasAltDown, wasButton1Down, wasCtrlDown, wasShiftDown

Methods inherited from class com.openinventor.inventor.Inventor
dispose, getNativeResourceHandle

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - SoScaleGestureEvent
```
public SoScaleGestureEvent()
```
    Constructor.
- Method Detail
  - getDeltaScaleFactor
```
public float getDeltaScaleFactor()
```
    Gets the ratio between the current fingers distance and the previous distance.
  - getScaleFactor
```
public float getScaleFactor()
```
    Gets the ratio between the current fingers distance and the first distance evaluated after the second down event.