#ifndef MATRIX4_H
#define MATRIX4_H

#include "basics_global.h"

#ifdef QT_GUI_LIB
#include <QMatrix4x4>
#endif

namespace paysages {
namespace basics {

class BASICSSHARED_EXPORT Matrix4
{
public:
    Matrix4(bool identity=true);

    void save(PackStream* stream) const;
    void load(PackStream* stream);

    Matrix4 mult(const Matrix4 &other) const;
    Vector3 multPoint(const Vector3 &v) const;
    Vector3 transform(const Vector3 &v) const;
    Matrix4 transposed() const;
    Matrix4 inversed() const;

    static Matrix4 newScale(double x, double y, double z);
    static Matrix4 newTranslate(double x, double y, double z);
    static Matrix4 newRotateX(double angle);
    static Matrix4 newRotateY(double angle);
    static Matrix4 newRotateZ(double angle);
    static Matrix4 newRotateAxis(double angle, const Vector3 &axis);
    static Matrix4 newRotateEuler(double heading, double attitude, double bank);
    static Matrix4 newRotateTripleAxis(const Vector3 &x, const Vector3 &y, const Vector3 &z);
    static Matrix4 newLookAt(const Vector3 &eye, const Vector3 &at, const Vector3 &up);
    static Matrix4 newPerspective(double fov_y, double aspect, double near, double far);

    double getDeterminant() const;

#ifdef QT_GUI_LIB
    inline QMatrix4x4 toQMatrix() const {
        return QMatrix4x4(a, b, c, d,
                          e, f, g, h,
                          i, j, k, l,
                          m, n, o, p);
    }
#endif

private:
    double a;
    double b;
    double c;
    double d;
    double e;
    double f;
    double g;
    double h;
    double i;
    double j;
    double k;
    double l;
    double m;
    double n;
    double o;
    double p;
};

}
}

#endif // MATRIX4_H