qopenxrcamera_p.h

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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
 
#ifndef QOPENXRCAMERA_H
#define QOPENXRCAMERA_H
 
//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
 
 
#include <QtQuick3DXr/qtquick3dxrglobal.h>
 
#include <QObject>
#include <QtQuick3D/private/qquick3dcamera_p.h>
 
QT_BEGIN_NAMESPACE
 
class Q_QUICK3DXR_EXPORT QOpenXREyeCamera : public QQuick3DCamera
{
    Q_OBJECT
    Q_PROPERTY(float leftTangent READ leftTangent WRITE setLeftTangent NOTIFY leftTangentChanged)
    Q_PROPERTY(float rightTangent READ rightTangent WRITE setRightTangent NOTIFY rightTangentChanged)
    Q_PROPERTY(float upTangent READ upTangent WRITE setUpTangent NOTIFY upTangentChanged)
    Q_PROPERTY(float downTangent READ downTangent WRITE setDownTangent NOTIFY downTangentChanged)
    Q_PROPERTY(float clipNear READ clipNear WRITE setClipNear NOTIFY clipNearChanged)
    Q_PROPERTY(float clipFar READ clipFar WRITE setClipFar NOTIFY clipFarChanged)
 
public:
    QOpenXREyeCamera(QQuick3DNode *parent = nullptr);
 
    float leftTangent() const;
    float rightTangent() const;
    float upTangent() const;
    float downTangent() const;
    float clipNear() const;
    float clipFar() const;
 
public Q_SLOTS:
    void setLeftTangent(float leftTangent);
    void setRightTangent(float rightTangent);
    void setUpTangent(float upTangent);
    void setDownTangent(float downTangent);
    void setClipNear(float clipNear);
    void setClipFar(float clipFar);
 
Q_SIGNALS:
    void leftTangentChanged(float leftTangent);
    void rightTangentChanged(float rightTangent);
    void upTangentChanged(float upTangent);
    void downTangentChanged(float downTangent);
    void clipNearChanged(float clipNear);
    void clipFarChanged(float clipFar);
 
public:
    QMatrix4x4 m_projection;
 
protected:
    QSSGRenderGraphObject *updateSpatialNode(QSSGRenderGraphObject *node) override;
 
private:
    void markProjectionDirty();
    void maybeUpdateProjection();
    float m_leftTangent = -0.017455064928218f;  // tan(-1)
    float m_rightTangent = 0.017455064928218f;  // tan(1)
    float m_upTangent = 0.017455064928218f;     // tan(1)
    float m_downTangent = -0.017455064928218f;  // tan(-1)
    float m_clipNear = 1.0f;
    float m_clipFar = 10000.0f;
    bool m_projectionDirty = true;
};
 
class Q_QUICK3DXR_EXPORT QOpenXRCamera : public QQuick3DNode
{
    Q_OBJECT
    Q_PROPERTY(float clipNear READ clipNear WRITE setClipNear NOTIFY clipNearChanged)
    Q_PROPERTY(float clipFar READ clipFar WRITE setClipFar NOTIFY clipFarChanged)
    QML_NAMED_ELEMENT(XrCamera)
 
public:
    QOpenXRCamera(QQuick3DNode *parent = nullptr);
    ~QOpenXRCamera();
    float clipNear() const;
    float clipFar() const;
 
public Q_SLOTS:
    void setClipNear(float clipNear);
    void setClipFar(float clipFar);
 
Q_SIGNALS:
    void clipNearChanged(float clipNear);
    void clipFarChanged(float clipFar);
 
private:
    float m_clipNear = 1.0f;
    float m_clipFar = 10000.0f;
};
 
 
QT_END_NAMESPACE
 
#endif // QOPENXRCAMERA_H