C++ leap::Pointable类代码示例

static VALUE length(VALUE self)
{
  Leap::Pointable * pointer;

  Data_Get_Struct(self, Leap::Pointable, pointer);

  return DBL2NUM(pointer->length());
}

static VALUE touch_distance(VALUE self)
{
  Leap::Pointable * pointer;

  Data_Get_Struct(self, Leap::Pointable, pointer);

  return DBL2NUM(pointer->touchDistance());
}

static VALUE pointable_id(VALUE self)
{
  Leap::Pointable * pointer;
  const char * string;

  Data_Get_Struct(self, Leap::Pointable, pointer);

  return INT2NUM(pointer->id());
}

VALUE MakePointable(Leap::Pointable pointable)
{
  if (pointable.isFinger())
    return WrapFinger(new Leap::Finger(pointable));

  if (pointable.isTool())
    return WrapTool(new Leap::Tool(pointable));

  return WrapPointable(new Leap::Pointable(pointable));
}

static VALUE direction(VALUE self)
{
  Leap::Pointable * pointer;
  Leap::Vector * vector;

  Data_Get_Struct(self, Leap::Pointable, pointer);

  vector = new Leap::Vector(pointer->direction());

  return WrapVector(vector);
}

static VALUE tip_velocity(VALUE self)
{
  Leap::Pointable * pointer;
  Leap::Vector * vector;

  Data_Get_Struct(self, Leap::Pointable, pointer);

  vector = new Leap::Vector(pointer->tipVelocity());

  return WrapVector(vector);
}

static VALUE stabilized_tip_position(VALUE self)
{
  Leap::Pointable * pointer;
  Leap::Vector * vector;

  Data_Get_Struct(self, Leap::Pointable, pointer);

  vector = new Leap::Vector(pointer->stabilizedTipPosition());

  return WrapVector(vector);
}

static VALUE hand(VALUE self)
{
  Leap::Pointable * pointer;
  Leap::Hand * hand;

  Data_Get_Struct(self, Leap::Pointable, pointer);

  hand = new Leap::Hand(pointer->hand());

  return WrapHand(hand);
}

static VALUE valid_p(VALUE self)
{
  Leap::Pointable * pointer;

  Data_Get_Struct(self, Leap::Pointable, pointer);

  if (pointer->isValid())
    return Qtrue;

  return Qfalse;
}

void Quickstart::onFrame(const Leap::Controller &controller) {
    // returns the most recent frame. older frames can be accessed by passing in 
    // a "history" parameter to retrieve an older frame, up to about 60
    // (exact number subject to change)
    const Leap::Frame frame = controller.frame();

    // do nothing unless hands are detected
    if (frame.hands().empty())
        return;
    
    // first detected hand
    const Leap::Hand firstHand = frame.hands()[0];
    // first pointable object (finger or tool)
    const Leap::PointableList pointables = firstHand.pointables();
    if (pointables.empty()) return;
    const Leap::Pointable firstPointable = pointables[0];
    
    // print velocity on the X axis
    cout << "Pointable X velocity: " << firstPointable.tipVelocity()[0] << endl;
    
    const Leap::FingerList fingers = firstHand.fingers();
    if (fingers.empty()) return;
    
    for (int i = 0; i < fingers.count(); i++) {
        const Leap::Finger finger = fingers[i];
        
        std::cout << "Detected finger " << i << " at position (" <<
            finger.tipPosition().x << ", " <<
            finger.tipPosition().y << ", " <<
            finger.tipPosition().z << ")" << std::endl;
    }
}

static VALUE touch_zone(VALUE self)
{
  Leap::Pointable * pointer;

  Data_Get_Struct(self, Leap::Pointable, pointer);

  switch(pointer->touchZone()) {
    case(Leap::Pointable::ZONE_NONE):
      return ID2SYM(rb_intern("none"));
    case(Leap::Pointable::ZONE_HOVERING):
      return ID2SYM(rb_intern("hovering"));
    case(Leap::Pointable::ZONE_TOUCHING):
      return ID2SYM(rb_intern("touching"));
  };

  return Qfalse;
}

void convertPointableRotation(const Leap::Pointable& pointable, MatrixF& outRotation)
{
   // We need to convert from Motion coordinates to
   // Torque coordinates.  The conversion is:
   //
   // Motion                       Torque
   // a b c         a  b  c        a -c  b
   // d e f   -->  -g -h -i  -->  -g  i -h
   // g h i         d  e  f        d -f  e
   Leap::Vector pointableFront = -pointable.direction();
   Leap::Vector pointableRight = Leap::Vector::up().cross(pointableFront);
   Leap::Vector pointableUp = pointableFront.cross(pointableRight);

   outRotation.setColumn(0, Point4F(  pointableRight.x, -pointableRight.z,  pointableRight.y,  0.0f));
   outRotation.setColumn(1, Point4F( -pointableFront.x,  pointableFront.z, -pointableFront.y,  0.0f));
   outRotation.setColumn(2, Point4F(  pointableUp.x,    -pointableUp.z,     pointableUp.y,     0.0f));
   outRotation.setPosition(Point3F::Zero);
}

void LeapSample03App::draw()
{
    gl::clear( Color( .97, .93, .79 ) );
    Leap::PointableList pointables = leap.frame().pointables();
    Leap::InteractionBox iBox = leap.frame().interactionBox();

    for ( int p = 0; p < pointables.count(); p++ ) {
        Leap::Pointable pointable = pointables[p];
#if 1
        // ここから追加
        // 伸びている指、ツール以外は無視する
        if ( !pointable.isExtended() ) {
            continue;
        }
        // ここまで追加
#endif

        Leap::Vector normalizedPosition =
            iBox.normalizePoint( pointable.stabilizedTipPosition() );
        float x = normalizedPosition.x * windowWidth;
        float y = windowHeight - normalizedPosition.y * windowHeight;

        // ホバー状態
        if ( (pointable.touchDistance() > 0) &&
            (pointable.touchZone() != Leap::Pointable::Zone::ZONE_NONE) ) {
            gl::color(0, 1, 0, 1 - pointable.touchDistance());
        }
        // タッチ状態
        else if ( pointable.touchDistance() <= 0 ) {
            gl::color(1, 0, 0, -pointable.touchDistance());
        }
        // タッチ対象外
        else {
            gl::color(0, 0, 1, .05);
        }

        gl::drawSolidCircle( Vec2f( x, y ), 40 );
    }
}

void Quickstart::onFrame(const Leap::Controller &controller) {
    // returns the most recent frame. older frames can be accessed by passing in 
    // a "history" parameter to retrieve an older frame, up to about 60
    // (exact number subject to change)
    const Leap::Frame frame = controller.frame();

    // do nothing unless hands are detected
    if (frame.hands().empty())
        return;
    
    // retrieve first pointable object (finger or tool)
    // from the frame
    const Leap::PointableList pointables = frame.hands()[0].pointables();
    if (pointables.empty())
        return;
    const Leap::Pointable firstPointable = pointables[0];
    
    // print velocity on the X axis
    cout << "Pointable X velocity: " << firstPointable.tipVelocity()[0] << endl;
}

void DefaultQtLeapMouseHandler::onFrame(const Leap::Frame &frame)
{
    /////// MOUSE EVENTS /////////
    // MOUSE BUTTON PRESSED
    // MOUSE BUTTON RELEASED
    // MOUSE MOVE

    if (this->listeners.empty())
        return ;

    Leap::Pointable pointer = frame.pointable(this->savedMousePointableId);
    if (!pointer.isValid())
    {
        pointer = frame.pointables().frontmost();
        this->savedMousePointableId = pointer.id();
    }

    bool forceRelease = (frame.pointables().count() == 0 && this->mousePressed);
    QMouseEvent::Type frameMouseEvent = QMouseEvent::None;
    QPointF globalPointerPos = QtLeapUtils::convertPointablePosToScreenPos(frame.interactionBox(), pointer);
    Qt::MouseButton button = Qt::NoButton;
    Qt::MouseButtons buttons = Qt::NoButton;

    // FINGER TOUCHING AND NO PREVIOUS PRESS -> SETTING BUTTON PRESS
    if (pointer.touchDistance() <= 0 &&
            pointer.touchZone() == Leap::Pointable::ZONE_TOUCHING &&
            !this->mousePressed)
    {
        this->mousePressed = true;
        frameMouseEvent = QMouseEvent::MouseButtonPress;
        button = Qt::LeftButton;
    }
    else if (this->mousePressed && (pointer.touchDistance() > 0 ||
                                    pointer.touchZone() == Leap::Pointable::ZONE_NONE ||
                                    forceRelease))         // FINGER NOT TOUCHING AND PREVIOUS PRESS -> RELEASING BUTTON PRESS
    {
        frameMouseEvent = QMouseEvent::MouseButtonRelease;
        this->mousePressed = false;
        button = Qt::LeftButton;
    }
    else if (frameMouseEvent == QMouseEvent::None &&     // FINGER IN TOUCHING OR HOVERING ZONE AND NO BUTTON PRESS / RELEASE CHANGE -> MouseMove
             pointer.touchZone() != Leap::Pointable::ZONE_NONE
             && globalPointerPos.toPoint() != this->previousPos)
    {
        frameMouseEvent = QMouseEvent::MouseMove;
        this->previousPos = globalPointerPos.toPoint();
        QCursor::setPos(this->previousPos);
    }

    if (this->mousePressed)
        buttons |= Qt::LeftButton;

    if (frameMouseEvent != QMouseEvent::None)
        foreach (QObject *listener, this->listeners)
            QCoreApplication::postEvent(listener, new QMouseEvent(frameMouseEvent,
                                                                  QtLeapUtils::convertGlobalPosToLocalPos(listener, globalPointerPos),
                                                                  globalPointerPos,
                                                                  button,
                                                                  buttons,
                                                                  Qt::NoModifier));
}