qtuiotoken_p.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#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(QEventPoint::State::Pressed)
    {
    }
 
    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() == QEventPoint::State::Stationary &&
            !qFuzzyCompare(m_x + 2.0, x + 2.0)) { // +2 because 1 is a valid value, and qFuzzyCompare can't cope with 0.0
            setState(QEventPoint::State::Updated);
        }
        m_x = x;
    }
    float x() const { return m_x; }
 
    void setY(float y)
    {
        if (state() == QEventPoint::State::Stationary &&
            !qFuzzyCompare(m_y + 2.0, y + 2.0)) { // +2 because 1 is a valid value, and qFuzzyCompare can't cope with 0.0
            setState(QEventPoint::State::Updated);
        }
        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() == QEventPoint::State::Stationary &&
            !qFuzzyCompare(m_angle + 2.0, angle + 2.0)) { // +2 because 1 is a valid value, and qFuzzyCompare can't cope with 0.0
            setState(QEventPoint::State::Updated);
        }
        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 QEventPoint::State &state) { m_state = state; }
    QEventPoint::State 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;
    QEventPoint::State m_state;
};
Q_DECLARE_TYPEINFO(QTuioToken, Q_RELOCATABLE_TYPE); // Q_PRIMITIVE_TYPE: not possible: m_id, m_classId == -1
 
QT_END_NAMESPACE
 
#endif // QTUIOOBJECT_P_H