camera.h

#ifndef CAMERA_H
#define CAMERA_H

#include "math.h"

#include <QMatrix4x4>
#include <QVector2D>
#include <QVector3D>

class Camera : public QObject
{
    Q_OBJECT

    public:

        Camera(QObject* parent, float minDist, float maxDist, float initDist = .0f, float initYaw = .0f, float initPitch = .0f);

        void getViewMatrix(QMatrix4x4& viewMatrix);

        void getProjectionMatrix(QMatrix4x4& projMatrix);

    public slots:

        void setAspectRatio(float aspectRatio);

        void setNearFarPlane(float near, float far);

        void rotateX(float angle);

        void rotateY(float angle);

        void move(const QVector2D& offset);

        void zoom(float distance);

    private:

        // aspect ratio
        float m_aspectRatio;

        // near plane
        float m_near;

        // far plane
        float m_far;

        // current camera view distance
        float m_dist;

        // minimal camera view distance
        float m_minDist;

        // maximal camera view distance
        float m_maxDist;

        // current camera yaw angle in radians
        float m_xRot;

        //current camera pitch angle in radians
        float m_yRot;

        // camera x/y offset
        QVector2D m_offset;
};

#endif // CAMERA_H