void processGestureInMenuSelection(TouchGestureRecognizer.TouchGesture touchGesture)
{
if (touchGesture.GestureType == TouchGestureRecognizer.TouchGestureType.SINGLE_TOUCH_DOWN)
{
TouchPointerData touchData = (TouchPointerData)touchGesture.MetaData;
Vector2 rawLocalTapPos = new Vector2(touchData.RelX, touchData.RelY);
Vector2 adjustedLocalTapPos = GlobalUtilities.ConvertMobileRelPosToUnityRelPos(rawLocalTapPos);
if (menuManipLocalBound.Contains(adjustedLocalTapPos))
{
_menuManip.GetComponent <MeshRenderer>().material = menuMaterials[1];
}
else if (menuDrawLocalBound.Contains(adjustedLocalTapPos))
{
_menuDraw.GetComponent <MeshRenderer>().material = menuMaterials[3];
}
}
else if (touchGesture.GestureType == TouchGestureRecognizer.TouchGestureType.SINGLE_TAP)
{
Vector2 rawLocalTapPos = (Vector2)touchGesture.MetaData;
Vector2 adjustedLocalTapPos = GlobalUtilities.ConvertMobileRelPosToUnityRelPos(rawLocalTapPos);
if (menuManipLocalBound.Contains(adjustedLocalTapPos))
{
setMenuItemActive(false);
_currentState = VirtualPadState.OBJECT_MANIP;
}
else if (menuDrawLocalBound.Contains(adjustedLocalTapPos))
{
setMenuItemActive(false);
_currentState = VirtualPadState.DRAW;
}
}
}
bool recognizePadPanningGesture(TouchPointerData[] avaiPointers, out TouchGesture recognizedGesture)
{
recognizedGesture = new TouchGesture();
TouchPointerData anchorFinger = null;
TouchPointerData[] movingFingers = new TouchPointerData[2];
int movingFingersIdx = 0;
//classifying anchor and moving fingers
for (int i = 0; i < avaiPointers.Length; i++)
{
if (Math.Abs(avaiPointers[i].RelVeloX) < 0.0001 && Math.Abs(avaiPointers[i].RelVeloY) < 0.0001)
{
anchorFinger = avaiPointers[i];
}
else
{
if (movingFingersIdx < movingFingers.Length)
{
movingFingers[movingFingersIdx++] = avaiPointers[i];
}
}
}
//check movement of moving fingers to see if they are moving in the same direction
if (anchorFinger == null || movingFingersIdx != movingFingers.Length)
{
return(false);
}
if (movingFingers[0].RelVeloX * movingFingers[1].RelVeloX < 0 || movingFingers[0].RelVeloY * movingFingers[1].RelVeloY < 0)
{
return(false);
}
else
{
Vector2 anchorPos = new Vector2(anchorFinger.RelX, anchorFinger.RelY);
Vector2 avgMovingVelo = new Vector2();
avgMovingVelo.x = (movingFingers[0].RelVeloX + movingFingers[1].RelVeloX) / 2;
avgMovingVelo.y = (movingFingers[0].RelVeloY + movingFingers[1].RelVeloY) / 2;
Vector2 curMovingCenter = new Vector2();
curMovingCenter.x = (movingFingers[0].RelX + movingFingers[1].RelX) / 2;
curMovingCenter.y = (movingFingers[0].RelY + movingFingers[1].RelY) / 2;
Vector2 futureMovingCenter = new Vector2();
futureMovingCenter.x = curMovingCenter.x + avgMovingVelo.x / TOUCH_REFRESH_RATE;
futureMovingCenter.y = curMovingCenter.y + avgMovingVelo.y / TOUCH_REFRESH_RATE;
float curDistanceToAnchor = Vector2.Distance(curMovingCenter, anchorPos);
float futureDistanceToAnchor = Vector2.Distance(futureMovingCenter, anchorPos);
Vector2 scaleRatio = new Vector2(futureDistanceToAnchor / curDistanceToAnchor, futureDistanceToAnchor / curDistanceToAnchor);
recognizedGesture.GestureType = TouchGestureType.PAD_SCALING;
recognizedGesture.MetaData = scaleRatio;
return(true);
}
}
public void RecognizeGesture(TouchEventData curTouchEvent)
{
TouchGesture recognizedGesture = new TouchGesture();
//if there are more than one fingers, there is no chance for a single tap
if (curTouchEvent.PointerCount > 1)
{
stayStillSingleTouchDown = null;
}
if (curTouchEvent.PointerCount == 1 &&
(Math.Abs(curTouchEvent.AvaiPointers[0].RelVeloX) > 0.0001 || Math.Abs(curTouchEvent.AvaiPointers[0].RelVeloY) > 0.0001))
{
stayStillSingleTouchDown = null;
}
//process cases with multi fingers
if (curTouchEvent.PointerCount == 5)// && curTouchEvent.EventType == 0)
{
recognizedGesture.GestureType = TouchGestureType.FIVE_POINTERS;
informGestureRecognizedEvent(recognizedGesture);
return;
}
//recognizing scaling virtual pad gesture
if (curTouchEvent.PointerCount == 3 && curTouchEvent.EventType == 1)
{
if (recognizePadPanningGesture(curTouchEvent.AvaiPointers, out recognizedGesture))
{
}
else
{
}
informGestureRecognizedEvent(recognizedGesture);
}
//recognizing pad translating gesture
if (curTouchEvent.PointerCount == 2)
{
//two fingers moving in the same direction => translating the virtual pad
if (curTouchEvent.AvaiPointers[0].RelVeloX * curTouchEvent.AvaiPointers[1].RelVeloX > 0 &&
curTouchEvent.AvaiPointers[0].RelVeloY * curTouchEvent.AvaiPointers[1].RelVeloY > 0)
{
float avgVeloX = (curTouchEvent.AvaiPointers[0].RelVeloX + curTouchEvent.AvaiPointers[1].RelVeloX) / 2;
float veloXDif = Math.Abs(curTouchEvent.AvaiPointers[0].RelVeloX - curTouchEvent.AvaiPointers[1].RelVeloX);
float avgVeloY = (curTouchEvent.AvaiPointers[0].RelVeloY + curTouchEvent.AvaiPointers[1].RelVeloY) / 2;
float veloYDif = Math.Abs(curTouchEvent.AvaiPointers[0].RelVeloY - curTouchEvent.AvaiPointers[1].RelVeloY);
//if(veloXDif/avgVeloX < 0.2 && veloYDif/avgVeloY<0.2)
//{
recognizedGesture.GestureType = TouchGestureType.PAD_TRANSLATING;
Vector2 translateVelo = new Vector2();
translateVelo.x = avgVeloX / TOUCH_REFRESH_RATE;
translateVelo.y = avgVeloY / TOUCH_REFRESH_RATE;
recognizedGesture.MetaData = translateVelo;
informGestureRecognizedEvent(recognizedGesture);
return;
}
//two fingers moving in opposite direction => object scaling
if (curTouchEvent.AvaiPointers[0].RelVeloX * curTouchEvent.AvaiPointers[1].RelVeloX < 0 ||
curTouchEvent.AvaiPointers[0].RelVeloY * curTouchEvent.AvaiPointers[1].RelVeloY < 0)
{
recognizedGesture.GestureType = TouchGestureType.OBJECT_SCALING;
informGestureRecognizedEvent(recognizedGesture);
return;
}
}
//process when there is only one finger
if (curTouchEvent.EventType == 0 && curTouchEvent.PointerCount == 1)
{
stayStillSingleTouchDown = new RecordedTouch();
stayStillSingleTouchDown.TouchPointers.Add(TouchPointerData.Create(curTouchEvent.AvaiPointers[0]));
recognizedGesture.GestureType = TouchGestureType.SINGLE_TOUCH_DOWN;
recognizedGesture.MetaData = TouchPointerData.Create(curTouchEvent.AvaiPointers[0]);
informGestureRecognizedEvent(recognizedGesture);
return;
}
if (curTouchEvent.EventType == 2 && curTouchEvent.PointerCount == 0)
{
//first inform a non gesture for client to process if needed
TouchGesture non_gesture = new TouchGesture();
informGestureRecognizedEvent(non_gesture);
RecordedTouch recordedTouchUp = new RecordedTouch();
if (stayStillSingleTouchDown != null)
{
TimeSpan touchDuration = recordedTouchUp.TimeStamp.Subtract(stayStillSingleTouchDown.TimeStamp);
if (touchDuration.TotalMilliseconds < 200)
{
recognizedGesture.GestureType = TouchGestureType.SINGLE_TAP;
recognizedGesture.MetaData = new Vector2(stayStillSingleTouchDown.TouchPointers[0].RelX, stayStillSingleTouchDown.TouchPointers[0].RelY);
}
stayStillSingleTouchDown = null;
informGestureRecognizedEvent(recognizedGesture);
return;
}
}
}
