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  ** Copyright (C) 2016 The Qt Company Ltd.
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  ** This file is part of the QtCore module of the Qt Toolkit.
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  #ifndef QTUIOOBJECT_P_H
  #define QTUIOOBJECT_P_H
  
  #include <Qt>
  #include <qmath.h>
  
  QT_BEGIN_NAMESPACE
  
  /*!
      \internal
  
      A fiducial object, or token, represented by 2Dobj in TUIO 1.x and tok in TUIO 2:
      a physical object whose position and rotation can be uniquely tracked
      on the touchscreen surface.
  */
  class QTuioToken
  {
  public:
      QTuioToken(int id = -1)
          : m_id(id)
          , m_classId(-1)
          , m_x(0)
          , m_y(0)
          , m_vx(0)
          , m_vy(0)
          , m_acceleration(0)
          , m_angle(0)
          , m_angularVelocity(0)
          , m_angularAcceleration(0)
          , m_state(Qt::TouchPointPressed)
      {
      }
  
      int id() const { return m_id; }
  
      int classId() const { return m_classId; }
      void setClassId(int classId) { m_classId = classId; }
  
      void setX(float x)
      {
          if (state() == Qt::TouchPointStationary &&
              !qFuzzyCompare(m_x + 2.0, x + 2.0)) { // +2 because 1 is a valid value, and qFuzzyCompare can't cope with 0.0
              setState(Qt::TouchPointMoved);
          }
          m_x = x;
      }
      float x() const { return m_x; }
  
      void setY(float y)
      {
          if (state() == Qt::TouchPointStationary &&
              !qFuzzyCompare(m_y + 2.0, y + 2.0)) { // +2 because 1 is a valid value, and qFuzzyCompare can't cope with 0.0
              setState(Qt::TouchPointMoved);
          }
          m_y = y;
      }
      float y() const { return m_y; }
  
      void setVX(float vx) { m_vx = vx; }
      float vx() const { return m_vx; }
  
      void setVY(float vy) { m_vy = vy; }
      float vy() const { return m_vy; }
  
      void setAcceleration(float acceleration) { m_acceleration = acceleration; }
      float acceleration() const { return m_acceleration; }
  
      float angle() const { return m_angle; }
      void setAngle(float angle)
      {
          if (angle > M_PI)
              angle = angle - M_PI * 2.0; // zero is pointing upwards, and is the default; but we want to have negative angles when rotating left
          if (state() == Qt::TouchPointStationary &&
              !qFuzzyCompare(m_angle + 2.0, angle + 2.0)) { // +2 because 1 is a valid value, and qFuzzyCompare can't cope with 0.0
              setState(Qt::TouchPointMoved);
          }
          m_angle = angle;
      }
  
      float angularVelocity() const { return m_angularVelocity; }
      void setAngularVelocity(float angularVelocity) { m_angularVelocity = angularVelocity; }
  
      float angularAcceleration() const { return m_angularAcceleration; }
      void setAngularAcceleration(float angularAcceleration) { m_angularAcceleration = angularAcceleration; }
  
      void setState(const Qt::TouchPointState &state) { m_state = state; }
      Qt::TouchPointState state() const { return m_state; }
  
  private:
      int m_id;       // sessionID, temporary object ID
      int m_classId;  // classID (e.g. marker ID)
      float m_x;
      float m_y;
      float m_vx;
      float m_vy;
      float m_acceleration;
      float m_angle;
      float m_angularVelocity;
      float m_angularAcceleration;
      Qt::TouchPointState m_state;
  };
  Q_DECLARE_TYPEINFO(QTuioToken, Q_MOVABLE_TYPE); // Q_PRIMITIVE_TYPE: not possible: m_id, m_classId == -1
  
  QT_END_NAMESPACE
  
  #endif // QTUIOOBJECT_P_H
  