camera.h Example File

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 #ifndef CAMERA_H
 #define CAMERA_H

 #include <QtCore/qobject.h>
 #include <QtCore/qsize.h>
 #include <QtGui/qvector3d.h>
 #include <QtGui/qmatrix4x4.h>
 #include <QtGui/qquaternion.h>

 class CameraPrivate;
 class QGLPainter;

 class Camera : public QObject
 {
     Q_OBJECT
     Q_ENUMS(ProjectionType)
     Q_PROPERTY(ProjectionType projectionType READ projectionType WRITE setProjectionType NOTIFY projectionChanged)
     Q_PROPERTY(qreal fieldOfView READ fieldOfView WRITE setFieldOfView NOTIFY projectionChanged)
     Q_PROPERTY(qreal nearPlane READ nearPlane WRITE setNearPlane NOTIFY projectionChanged)
     Q_PROPERTY(qreal farPlane READ farPlane WRITE setFarPlane NOTIFY projectionChanged)
     Q_PROPERTY(QSizeF viewSize READ viewSize WRITE setViewSize NOTIFY projectionChanged)
     Q_PROPERTY(QSizeF minViewSize READ minViewSize WRITE setMinViewSize NOTIFY projectionChanged)
     Q_PROPERTY(int screenRotation READ screenRotation WRITE setScreenRotation NOTIFY projectionChanged)
     Q_PROPERTY(qreal xEye READ xEye WRITE setXEye NOTIFY viewChanged)
     Q_PROPERTY(qreal yEye READ yEye WRITE setYEye NOTIFY viewChanged)
     Q_PROPERTY(qreal zEye READ zEye WRITE setZEye NOTIFY viewChanged)
     Q_PROPERTY(QVector3D eye READ eye WRITE setEye NOTIFY viewChanged)
     Q_PROPERTY(QVector3D upVector READ upVector WRITE setUpVector NOTIFY viewChanged)
     Q_PROPERTY(qreal xCentre READ xCentre WRITE setXCentre NOTIFY viewChanged)
     Q_PROPERTY(qreal yCentre READ yCentre WRITE setYCentre NOTIFY viewChanged)
     Q_PROPERTY(qreal zCentre READ zCentre WRITE setZCentre NOTIFY viewChanged)
     Q_PROPERTY(QVector3D center READ center WRITE setCenter NOTIFY viewChanged)
     Q_PROPERTY(qreal eyeSeparation READ eyeSeparation WRITE setEyeSeparation NOTIFY viewChanged)
     Q_PROPERTY(QVector3D motionAdjustment READ motionAdjustment WRITE setMotionAdjustment DESIGNABLE false NOTIFY viewChanged)
     Q_PROPERTY(bool adjustForAspectRatio READ adjustForAspectRatio WRITE setAdjustForAspectRatio NOTIFY viewChanged)
 public:
     explicit Camera(QObject *parent = 0);
     ~Camera();

     enum ProjectionType
     {
         Perspective,
         Orthographic
     };

     Camera::ProjectionType projectionType() const;
     void setProjectionType(Camera::ProjectionType value);

     qreal fieldOfView() const;
     void setFieldOfView(qreal angle);

     qreal nearPlane() const;
     void setNearPlane(qreal value);

     qreal farPlane() const;
     void setFarPlane(qreal value);

     QSizeF viewSize() const;
     void setViewSize(const QSizeF& size);

     QSizeF minViewSize() const;
     void setMinViewSize(const QSizeF& size);

     int screenRotation() const;
     void setScreenRotation(int angle);

     qreal xEye() const;
     void setXEye(qreal value);
     qreal yEye() const;
     void setYEye(qreal value);
     qreal zEye() const;
     void setZEye(qreal value);

     QVector3D eye() const;
     void setEye(const QVector3D& vertex);

     QVector3D upVector() const;
     void setUpVector(const QVector3D& vector);

     qreal xCentre() const;
     void setXCentre(qreal value);
     qreal yCentre() const;
     void setYCentre(qreal value);
     qreal zCentre() const;
     void setZCentre(qreal value);

     QVector3D center() const;
     void setCenter(const QVector3D& vertex);

     qreal eyeSeparation() const;
     void setEyeSeparation(qreal value);

     QVector3D motionAdjustment() const;
     void setMotionAdjustment(const QVector3D& vector);

     bool adjustForAspectRatio() const;
     void setAdjustForAspectRatio(bool value);

     QQuaternion tilt(qreal angle) const;
     QQuaternion pan(qreal angle) const;
     QQuaternion roll(qreal angle) const;

     void rotateEye(const QQuaternion& q);
     void rotateCenter(const QQuaternion& q);

     QVector3D translation(qreal x, qreal y, qreal z) const;

     void translateEye(const QVector3D& vector);
     void translateCenter(const QVector3D& vector);

     QMatrix4x4 projectionMatrix(qreal aspectRatio) const;
     QMatrix4x4 modelViewMatrix() const;

 Q_SIGNALS:
     void projectionChanged();
     void viewChanged();

 private:
     CameraPrivate *d_ptr;

     CameraPrivate *d_func() const { return d_ptr; }

     Q_DISABLE_COPY(Camera)
 };

 #endif