SoRotateGestureRecognizer Class Reference
Rotate gesture recognizer. More...
#include <Inventor/gestures/recognizers/SoRotateGestureRecognizer.h>
Public Member Functions | |
| SoRotateGestureRecognizer () | |
| virtual | ~SoRotateGestureRecognizer () |
| SoEvent * | recognize (SoEvent *touchEvent) |
Detailed Description
Rotate gesture recognizer.
SoRotateGestureRecognizer analyses touch events and recognizes a two finger rotate gesture. It generates SoRotateGestureEvent events when this gesture is recognized. This recognizer generates a BEGIN event, followed by DELTA events and finishing with an END event (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
SoRotateGestureEvent, SoGestureRecognizer, SoScaleGestureRecognizer, SoDoubleTapGestureRecognizer, SoLongTapGestureRecognizer
- See related examples:
Constructor & Destructor Documentation
| SoRotateGestureRecognizer::SoRotateGestureRecognizer | ( | ) |
Constructor.
| virtual SoRotateGestureRecognizer::~SoRotateGestureRecognizer | ( | ) | [virtual] |
Destructor.
Member Function Documentation
If two fingers are moving on the screen, it returns the angle between the segment defined by the position of the fingers and the initial one, when the second finger was put down.
If no gesture has been recognized, returns null. Returns a pointer to an internal data object. Do not modify or delete this object.
Implements SoGestureRecognizer.
The documentation for this class was generated from the following file:
- Inventor/gestures/recognizers/SoRotateGestureRecognizer.h