- Qt 6.4
- Qt Quick 3D
- Qt Quick 3D Examples and Tutorials
- Qt Quick 3D - Robot Arm Example
- Qt Quick 3D | Commercial or GPLv3

# Qt Quick 3D - Robot Arm Example

     // Copyright (C) 2022 The Qt Company Ltd.
     // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

     #ifndef BACKEND_H
     #define BACKEND_H

     #include "animatedparam.h"

     #include <QObject>
     #include <qqmlregistration.h>

     class Backend : public QObject
     {
         Q_OBJECT
         QML_ELEMENT
         Q_PROPERTY(int rotation1Angle READ rotation1Angle WRITE setRot1Angle NOTIFY rot1AngleChanged)
         Q_PROPERTY(int rotation2Angle READ rotation2Angle WRITE setRot2Angle NOTIFY rot2AngleChanged)
         Q_PROPERTY(int rotation3Angle READ rotation3Angle WRITE setRot3Angle NOTIFY rot3AngleChanged)
         Q_PROPERTY(int rotation4Angle READ rotation4Angle WRITE setRot4Angle NOTIFY rot4AngleChanged)
         Q_PROPERTY(int clawsAngle READ clawsAngle WRITE setClawsAngle NOTIFY clawsAngleChanged)
         Q_PROPERTY(QString status READ status BINDABLE bindableStatus)

     public:
         explicit Backend(QObject *parent = nullptr);

         int rotation1Angle() const;
         void setRot1Angle(const int angle);

         int rotation2Angle() const;
         void setRot2Angle(const int angle);

         int rotation3Angle() const;
         void setRot3Angle(const int angle);

         int rotation4Angle() const;
         void setRot4Angle(const int angle);

         int clawsAngle() const;
         void setClawsAngle(const int angle);

         QString status() const;
         QBindable<QString> bindableStatus() const;

     signals:
         void rot1AngleChanged();
         void rot2AngleChanged();
         void rot3AngleChanged();
         void rot4AngleChanged();
         void clawsAngleChanged();

     private:
         AnimatedParam m_rotation1Angle;
         AnimatedParam m_rotation2Angle;
         AnimatedParam m_rotation3Angle;
         AnimatedParam m_rotation4Angle;
         AnimatedParam m_clawsAngle;

         QProperty<QString> m_status;
         QProperty<bool> m_isCollision;

         void detectCollision();
     };

     #endif // BACKEND_H