camera.h

#ifndef CAMERA_H
#define CAMERA_H

#include "entity.h"

#include <QMatrix4x4>

class Camera : public Entity
{
public:
    Camera();
    ~Camera();

    void activatePerspective(float aspect = 1.0f, float fovy = 90.0f, float zNear = 0.1f, float zFar = 100.0f);

    void activateOrthographic(float aspect = 1.0f, float yWidth = 2.0f, float zNear = 0.1f, float zFar = 100.0f);
    void setPos(QVector3D &pos) override;
    void setPos(float x, float y, float z) override;

    void setTarget(QVector3D &target);

    QMatrix4x4 &getVpMat();

    QMatrix4x4 &getVMat();

    QMatrix4x4 &getInvProjMat();

    void rotate(float deg_x, float deg_y);

    void move(float up, float right);

    float &getPointSizeCoeff();

    QVector3D getViewDependentMoveVector(float up, float right);

    QVector3D getViewTarget();
private:
    QMatrix4x4 viewMat, projectionMat, vpMat, invProjMat;
    QVector3D viewTarget;
    float pointSizeCoeff;

    void updateViewMat();
    void updateVpMat();
    void getAngles(float &hor, float &vert, float *viewVecLength = 0);
};

#endif // CAMERA_H