Leap motion - Processing - Swipe Gesture direction?

Question

I have been using 2 libraries up til now for my leap motion project as a bodge because they both allowed different functions, unique (better implemented) to each other. However I would like to just use one library as multiple is causing issues.

Basically I am using Leap Motion by Michael Heuer ( I need to use this library because it is currently the only library I can find that allows me to set optimize hmd and also scale factor).

The gesture implementation is as below, is there a way to get the swipe direction from this?

void onInit(final Controller controller)
{
  controller.enableGesture(Gesture.Type.TYPE_SWIPE);
  // enable top mounted policy
  controller.setPolicyFlags(Controller.PolicyFlag.POLICY_OPTIMIZE_HMD);
}

void onFrame(final Controller controller)
{
  Frame frame = controller.frame();
  for (Gesture gesture : frame.gestures())
  {
      if ("TYPE_SWIPE".equals(gesture.type().toString()) && "STATE_START".equals(gesture.state().toString())) {
    }

    println("gesture " + gesture + " id " + gesture.id() + " type " + gesture.type() + " state " + gesture.state() + " duration " + gesture.duration() + " durationSeconds " + gesture.durationSeconds()); 

 }
}

I tried gesture.direction() in the vain hope it might work but direction is not a recognized function.

Any help is much appreciated! Thanks in advance! Will

Answer 1

import com.leapmotion.leap.Controller;
import com.leapmotion.leap.Frame;
import com.leapmotion.leap.Gesture;
import com.leapmotion.leap.Hand;
import com.leapmotion.leap.HandList;
import com.leapmotion.leap.processing.LeapMotion;
import com.leapmotion.leap.SwipeGesture;
import com.leapmotion.leap.Vector;

LeapMotion leapMotion;

void setup()
{
  size(16 * 50, 9 * 50);
  background(20);

  leapMotion = new LeapMotion(this);
}

void draw()
{
  fill(20);
  rect(0, 0, width, height);
}

void onInit(final Controller controller)
{
  controller.enableGesture(Gesture.Type.TYPE_SWIPE);
  // enable top mounted policy
  //controller.setPolicyFlags(Controller.PolicyFlag.POLICY_OPTIMIZE_HMD);
}

void onFrame(final Controller controller)
{
  Frame frame = controller.frame();
  for (Gesture gesture : frame.gestures())
  {

 if(gesture.type() == Gesture.Type.TYPE_SWIPE) {
    SwipeGesture swipeGesture = new SwipeGesture(gesture);

    Vector swipeVector  = swipeGesture.direction();
    println("swipeVector : " + swipeVector);

    float swipeDirection = swipeVector.getX();
    println(swipeDirection);
   }
}

  HandList hands = frame.hands();
  //println(hands.count());
}

Just for future reference, hopefully this can help someone else out!