Comments on: Using the GestureManager

By: gimmix

gimmix — Mon, 10 Oct 2011 19:21:57 +0000

Yes this is an expected behaviour because the drag gesture is started by a touch_down and cancelled if there are more than one finger on one object. So if you drag something and then start to scale or rotate it the draggesture will be killed and has to be restarted by retouching it.

You can have a look at the OneFingerMoveGesture class which defines the steps for the DragGesture and modify it to your liking.

By: Pier

Pier — Mon, 10 Oct 2011 05:05:04 +0000

I’m having an issue with drag and zoom. It happens also with your DragRotateScaleMe example included in the 0.8 version.

I touch the object with one finger and it moves. Then I add another finger and I can zoom an rotate. But if I want to drag the object again, I have to remove both fingers and touch it again with one finger. If I just remove one of the finger the object won’t move.

Is that normal?
Can it be solved?

Cheers!

By: Pier

Pier — Thu, 06 Oct 2011 21:38:34 +0000

After posting the comments I figured it out…

Thanks again for the work you are doing.

By: gimmix

gimmix — Thu, 06 Oct 2011 16:53:11 +0000

The TwoFingerMoveGesture is a base class for all TwoFinger gestures like Zoom and Rotate so it doesn’t dispatch any events but you can change that by adding a dispatch in the dispatchGestureEvent function

There is no swipe gesture at the moment but you could easily implement one yourself.

By: Pier

Pier — Thu, 06 Oct 2011 08:06:05 +0000

BTW Is there a way to detect a swipe event?

By: Pier

Pier — Thu, 06 Oct 2011 08:05:26 +0000

I’m using this:
GestureManager.addGesture(new TwoFingerMoveGesture(TwoFingerMoveGesture.TRIGGER_MODE_MOVE));

What event do I have to listen to?

I’m trying with this.addEventListener(TransformGestureEvent.GESTURE_PAN, handleDrag);

But it never moves…

By: gimmix

gimmix — Wed, 04 May 2011 17:32:33 +0000

What tracker are you using? Do you know if this tracker sends the tracked blobs as cursors or blobs? For the hole GestureManager to work you currently need cursors but it can be easily adapted.

By: Tom

Tom — Wed, 04 May 2011 11:44:33 +0000

I’ve tried some simple image dragging. Works fine with simulator but can’t make it work with Kinect (which works with examples so TUIO Kinect and udp flash bridge is ok). Do You have any idea what is wrong?

By: gimmix

gimmix — Wed, 30 Mar 2011 19:41:26 +0000

ok the two null errors are explainable since both are cases that normally shouldn’t happen

Maybe see if the svn version + the new optional modifier helps here, but since you wrote in another comment that you already use that I guess you have resolved your problem?

By: Ben

Ben — Wed, 30 Mar 2011 08:28:41 +0000

Hi, i’m understanding better and better how to use it, it’s such a powerful system !
-> i’m on the last version i guess, downloaded the zip from google code.

So far, i found that :

– if there is only one step in the sequence, it throws a null error (tries to get the next step)
– if the last step has die:true, it throws a null error too

I’m trying to get a custom rotation gesture (2 fingers but force the rotation around the center of the object).
The TuioEvent.DEAD in RotateGesture is never called, as for the TuioEvent.NEW_FRAME. (i’m using the java tuio simulator 1.4, and i know it doesn’t dispatch it).
So far, i got it working for the first 2 fingers but for the next fingers, it’s buggy (event not dispatched or rotation value not correct).
Here is my stepSequence (which does NOT throws error :

this.addStep(new GestureStep(TouchEvent.TOUCH_UP, { tuioContainerAlias:”A”, targetAlias:”A”,die:true } ));
this.addStep(new GestureStep(TouchEvent.TOUCH_UP, { tuioContainerAlias:”B”, targetAlias:”A”,die:true } ));
this.addStep(new GestureStep(TouchEvent.TOUCH_DOWN, { tuioContainerAlias:”B”, targetAlias:”A” } ));
this.addStep(new GestureStep(TouchEvent.TOUCH_DOWN, { tuioContainerAlias:”A”, targetAlias:”A” } ));
this.addStep(new GestureStep(TouchEvent.TOUCH_MOVE, {targetAlias:”A”,tuiContainerAlias:”B”,goto:5 } ));