Controlling the output of Gestures

[Fadi_H_]

Hello Guys,

I am creating a program in Java for my Bachelor Thesis, 

Scenario: Its an Image viewer controller by Gestures (Swipe right and left for next and prev.)

The images are saved in an array m.

Problem: When i use swipe gesture once, it repeates the action 2-4 times, so it skips some images. 

Its the same situation when i add println("swiping left"), then i shows "swiping left" repeated in the console. 

What should i change to make the Program work more stable (for example "one order per 2 seconds")?

Part of the Code: 

if (sts.compareTo(pxcmStatus.PXCM_STATUS_NO_ERROR) >= 0) {
			senseManager.Init();  //initialize if no error		    
			for (int nframes = 0; nframes < 3000; nframes++) {
			sts = senseManager.AcquireFrame(true);
			if (sts.compareTo(pxcmStatus.PXCM_STATUS_NO_ERROR) < 0)
			break;
	
				while (senseManager.AcquireFrame(true).isSuccessful()) {
					
				// Retrieve current hand tracking results
			
				handData = handModule.CreateOutput();
				handData.Update();
				PXCMHandData.IHand hand = new PXCMHandData.IHand();
				sts = handData.QueryHandData(PXCMHandData.AccessOrderType.ACCESS_ORDER_BY_TIME,0,hand);
				
				
				//getting the 4 gestures			
				if (handData.IsGestureFired("swipe_left", gestureData)) {
					System.out.println("swipe left!!");	
					if(i==0)      
				    {
				     JOptionPane.showMessageDialog(null,"This is first Image");
				    }
						else{
						i=i-1;           //previous image in the array m
					    l.setIcon(m);
						}  
				}
				
				else if (handData.IsGestureFired("swipe_right", gestureData)) {
					System.out.println("swipe right!!");	
					if(i==m.length-1)
				    {
				     JOptionPane.showMessageDialog(null,"This is Last Image");
				    }
					    else {
				    	i=i+1;                    //next image in the array m
				        l.setIcon(m);
					    }	
					
				}
				
				else if (handData.IsGestureFired("thumb_up", gestureData)) {
					System.out.println("thumb up!!");

				}
					
				else if (handData.IsGestureFired("thumb_down", gestureData)) {
						System.out.println("thumb down!!");	
											  
				}
		
				senseManager.ReleaseFrame();
				}	
			}
			handData.close();
			senseManager.close();

[Xusheng_L_Intel]

You can detect the gestureData.state to avoid this issue. You can either use GESTURE_STATE_START or GESTURE_STATE_END.

[Fadi_H_]

Hello David, thanx for your comment. i was searching for an example about GESTURE_STATE_START and as always, no examples in java...

could you please where should i put GESTURE_STATE_START in the code? 

first i defined it like this:   GestureStateType state = GestureStateType.GESTURE_STATE_START;

where should i put what to make it work as wished?

thank you!

[Fadi_H_]

David Lu (Intel) wrote:

You can detect the gestureData.state to avoid this issue. You can either use GESTURE_STATE_START or GESTURE_STATE_END.

gesture.Data.state equals null the whole time, thats what i saw in debugging 

what does that mean and how correct it?