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Leap Motion library for Processing including gesture support
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README.md

LeapMotionP5

A Leap Motion Library for Processing

Working with all Processing versions and all operating systems (OSX, Windows), with the newest version of the leap motion sdk. Moreover it is including a variety of gestures. Just download the library archive at the bottom of this readme and extract it into the libraries folder of your processing sketchbook and your're ready to go.

Check http://www.onformative.com/lab/leapmotionp5 for additional information about the library.

Download

Download from here https://github.com/mrzl/LeapMotionP5/archive/master.zip extract the folder in the archive into your processing libraries folder and rename it from LeapMotionP5-master to LeapMotionP5. After that restart Processing and the library should be included. Check the examples within the library.

Examples

Basic Example

import com.onformative.leap.LeapMotionP5;
import com.leapmotion.leap.Finger;

LeapMotionP5 leap;

public void setup() {
  size(500, 500);
  leap = new LeapMotionP5(this);
}

public void draw() {
  background(0);
  fill(255);
  for (Finger finger : leap.getFingerList()) {
    PVector fingerPos = leap.getTip(finger);
    ellipse(fingerPos.x, fingerPos.y, 10, 10);
  }
}

public void stop() {
  leap.stop();
}

Gesture Recognition

import com.leapmotion.leap.CircleGesture;
import com.leapmotion.leap.Gesture.State;
import com.leapmotion.leap.Gesture.Type;
import com.leapmotion.leap.Hand;
import com.leapmotion.leap.KeyTapGesture;
import com.leapmotion.leap.ScreenTapGesture;
import com.leapmotion.leap.SwipeGesture;
import com.onformative.leap.LeapMotionP5;

LeapMotionP5 leap;
String lastGesture =
"enabling gestures: \n'c' for CircleGesture\n's' for SwipeGesture\n'k' for KeyTapGesture\n't' for ScreenTapGesture";

public void setup() {
  size(500, 500);
  textSize(17);

  leap = new LeapMotionP5(this);
}

public void draw() {
  background(0);
  for (Hand hand : leap.getHandList()) {
    PVector handPos = leap.getPosition(hand);
    ellipse(handPos.x, handPos.y, 20, 20);
  }
  text(lastGesture, 30, 30);
}

public void circleGestureRecognized(CircleGesture gesture, String clockwiseness) {
  if (gesture.state() == State.STATE_STOP) {
    System.out.println("//////////////////////////////////////");
    System.out.println("Gesture type: " + gesture.type().toString());
    System.out.println("ID: " + gesture.id());
    System.out.println("Radius: " + gesture.radius());
    System.out.println("Normal: " + gesture.normal());
    System.out.println("Clockwiseness: " + clockwiseness);
    System.out.println("Turns: " + gesture.progress());
    System.out.println("Center: " + leap.convertVectorToPVector(gesture.center()));
    System.out.println("Duration: " + gesture.durationSeconds() + "s");
    System.out.println("//////////////////////////////////////");
    lastGesture = "Gesture type: " + gesture.type().toString() + "\n";
    lastGesture += "ID: " + gesture.id() + "\n";
    lastGesture += "Radius: " + gesture.radius() + "\n";
    lastGesture += "Normal: " + gesture.normal() + "\n";
    lastGesture += "Clockwiseness: " + clockwiseness + "\n";
    lastGesture += "Turns: " + gesture.progress() + "\n";
    lastGesture += "Center: " + leap.convertVectorToPVector(gesture.center()) + "\n";
    lastGesture += "Duration: " + gesture.durationSeconds() + "s" + "\n";
  } 
  else if (gesture.state() == State.STATE_START) {
  } 
  else if (gesture.state() == State.STATE_UPDATE) {
  }
}

public void swipeGestureRecognized(SwipeGesture gesture) {
  if (gesture.state() == State.STATE_STOP) {
    System.out.println("//////////////////////////////////////");
    System.out.println("Gesture type: " + gesture.type());
    System.out.println("ID: " + gesture.id());
    System.out.println("Position: " + leap.convertVectorToPVector(gesture.position()));
    System.out.println("Direction: " + gesture.direction());
    System.out.println("Duration: " + gesture.durationSeconds() + "s");
    System.out.println("Speed: " + gesture.speed());
    System.out.println("//////////////////////////////////////");
    lastGesture = "Gesture type: " + gesture.type().toString() + "\n";
    lastGesture += "ID: " + gesture.id() + "\n";
    lastGesture += "Position: " + leap.convertVectorToPVector(gesture.position()) + "\n";
    lastGesture += "Direction: " + gesture.direction() + "\n";
    lastGesture += "Speed: " + gesture.speed() + "\n";
    lastGesture += "Duration: " + gesture.durationSeconds() + "s" + "\n";
  } 
  else if (gesture.state() == State.STATE_START) {
  } 
  else if (gesture.state() == State.STATE_UPDATE) {
  }
}

public void screenTapGestureRecognized(ScreenTapGesture gesture) {
  if (gesture.state() == State.STATE_STOP) {
    System.out.println("//////////////////////////////////////");
    System.out.println("Gesture type: " + gesture.type());
    System.out.println("ID: " + gesture.id());
    System.out.println("Position: " + leap.convertVectorToPVector(gesture.position()));
    System.out.println("Direction: " + gesture.direction());
    System.out.println("Duration: " + gesture.durationSeconds() + "s");
    System.out.println("//////////////////////////////////////");
    lastGesture = "Gesture type: " + gesture.type().toString() + "\n";
    lastGesture += "ID: " + gesture.id() + "\n";
    lastGesture += "Position: " + leap.convertVectorToPVector(gesture.position()) + "\n";
    lastGesture += "Direction: " + gesture.direction() + "\n";
    lastGesture += "Duration: " + gesture.durationSeconds() + "s" + "\n";
  } 
  else if (gesture.state() == State.STATE_START) {
  } 
  else if (gesture.state() == State.STATE_UPDATE) {
  }
}

public void KeyTapGestureRecognized(KeyTapGesture gesture) {
  if (gesture.state() == State.STATE_STOP) {
    System.out.println("//////////////////////////////////////");
    System.out.println("Gesture type: " + gesture.type());
    System.out.println("ID: " + gesture.id());
    System.out.println("Position: " + leap.convertVectorToPVector(gesture.position()));
    System.out.println("Direction: " + gesture.direction());
    System.out.println("Duration: " + gesture.durationSeconds() + "s");
    System.out.println("//////////////////////////////////////");
    lastGesture = "Gesture type: " + gesture.type().toString() + "\n";
    lastGesture += "ID: " + gesture.id() + "\n";
    lastGesture += "Position: " + leap.convertVectorToPVector(gesture.position()) + "\n";
    lastGesture += "Direction: " + gesture.direction() + "\n";
    lastGesture += "Duration: " + gesture.durationSeconds() + "s" + "\n";
  } 
  else if (gesture.state() == State.STATE_START) {
  } 
  else if (gesture.state() == State.STATE_UPDATE) {
  }
}

public void keyPressed() {
  if (key == 'c') {
    if (leap.isEnabled(Type.TYPE_CIRCLE)) {
      leap.disableGesture(Type.TYPE_CIRCLE);
      lastGesture = "Circle Gesture disabled.";
    } 
    else {
      leap.enableGesture(Type.TYPE_CIRCLE);
      lastGesture = "Circle Gesture enabled.";
    }
  }

  if (key == 's') {
    if (leap.isEnabled(Type.TYPE_SWIPE)) {
      leap.disableGesture(Type.TYPE_SWIPE);
      lastGesture = "Swipe Gesture disabled.";
    } 
    else {
      leap.enableGesture(Type.TYPE_SWIPE);
      lastGesture = "Swipe Gesture enabled.";
    }
  }

  if (key == 'k') {
    if (leap.isEnabled(Type.TYPE_KEY_TAP)) {
      leap.disableGesture(Type.TYPE_KEY_TAP);
      lastGesture = "KeyTap Gesture disabled.";
    } 
    else {
      leap.enableGesture(Type.TYPE_KEY_TAP);
      lastGesture = "KeyTap Gesture enabled.";
    }
  }

  if (key == 't') {
    if (leap.isEnabled(Type.TYPE_SCREEN_TAP)) {
      leap.disableGesture(Type.TYPE_SCREEN_TAP);
      lastGesture = "ScreenTap Gesture disabled. ";
    } 
    else {
      leap.enableGesture(Type.TYPE_SCREEN_TAP);
      lastGesture = "ScreenTap Gesture enabled. ";
    }
  }
}
public void stop() {
  leap.stop();
}


License

LeapMotionP5 library for Processing.
Copyright (c) 2012-2013 held jointly by the individual authors.

LeapMotionP5 library for Processing is free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

LeapMotionP5 library for Processing is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with LeapMotionP5 library for Processing.  If not, see http://www.gnu.org/licenses/.
Leap Developer SDK.
Copyright (C) 2012-2013 Leap Motion, Inc. All rights reserved.

NOTICE: This developer release of Leap Motion, Inc. software is confidential
and intended for very limited distribution. Parties using this software must
accept the SDK Agreement prior to obtaining this software and related tools.
This software is subject to copyright.
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