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// ************************************************************************** //
//
// BornAgain: simulate and fit scattering at grazing incidence
//
//! @file GUI/ba3d/view/camera.h
//! @brief Defines Camera class
//!
//! @homepage http://www.bornagainproject.org
//! @license GNU General Public License v3 or higher (see COPYING)
//! @copyright Forschungszentrum Jülich GmbH 2018
//! @authors Scientific Computing Group at MLZ (see CITATION, AUTHORS)
//
// ************************************************************************** //
#ifndef BORNAGAIN_GUI_BA3D_VIEW_CAMERA_H
#define BORNAGAIN_GUI_BA3D_VIEW_CAMERA_H
#include "GUI/ba3d/def.h"
#include <QColor>
#include <QMatrix4x4>
#include <QQuaternion>
namespace RealSpace
{
class Canvas;
class Program;
class Camera : public QObject
{
Q_OBJECT
friend class Canvas;
friend class Program;
public:
Camera();
struct Position {
Position();
Position(const Vector3D& eye, const Vector3D& ctr, const Vector3D& up,
const QQuaternion& = {});
Vector3D eye, ctr, up;
QQuaternion rot;
Position interpolateTo(const Position&, float) const;
};
void lookAt(const Position&); // camera position for 3D object
void lookAt3DAxes(const Position&); // camera position for 3D axes
const Position& getPos() const { return pos; }
const Position& getPos3DAxes() const { return pos3DAxes; }
void set();
signals:
void updated(Camera const&);
private:
void setAspectRatio(float);
// additional transformation
void turnBy(QQuaternion const&);
void zoomBy(float);
void endTransform(bool keep);
// camera setup
Position pos;
Position pos3DAxes;
float zoom;
float vertAngle, nearPlane, farPlane;
// light
Vector3D lightPos1, lightPosRotated1;
// transformation
QQuaternion addRot; // rotation, additional rotation
QMatrix4x4 matModel, matProj;
QMatrix4x4 matModel3DAxes;
};
} // namespace RealSpace
#endif // BORNAGAIN_GUI_BA3D_VIEW_CAMERA_H
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