File indexing completed on 2024-05-12 15:58:36

 /*
  * This file is part of Krita
  *
  *  SPDX-FileCopyrightText: 2006 Cyrille Berger <cberger@cberger.net>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #ifndef _KIS_PERSPECTIVE_MATH_H_
 #define _KIS_PERSPECTIVE_MATH_H_
 
 #include "kis_vec.h"
 #include <QPointF>
 #include <Eigen/Geometry>
 
 typedef Eigen::Matrix<qreal, 3, 3> Matrix3qreal;
 typedef Eigen::Matrix<qreal, 9, 9> Matrix9qreal;
 typedef Eigen::Matrix<qreal, 9, 1> Vector9qreal;
 typedef Eigen::Hyperplane<qreal, 2> LineEquation;
 
 #include <kritaimage_export.h>
 
 class QRect;
 
 class KRITAIMAGE_EXPORT KisPerspectiveMath
 {
 private:
     KisPerspectiveMath() { }
 public:
     static Matrix3qreal computeMatrixTransfo(const QPointF& topLeft1, const QPointF& topRight1, const QPointF& bottomLeft1, const QPointF& bottomRight1, const QPointF& topLeft2, const QPointF& topRight2, const QPointF& bottomLeft2, const QPointF& bottomRight2);
     static Matrix3qreal computeMatrixTransfoToPerspective(const QPointF& topLeft, const QPointF& topRight, const QPointF& bottomLeft, const QPointF& bottomRight, const QRect& r);
     static Matrix3qreal computeMatrixTransfoFromPerspective(const QRect& r, const QPointF& topLeft, const QPointF& topRight, const QPointF& bottomLeft, const QPointF& bottomRight);
     /// TODO: get rid of this in 2.0
     static inline QPointF matProd(const Matrix3qreal& m, const QPointF& p) {
         qreal s = qreal(1) / (p.x() * m.coeff(2, 0) + p.y() * m.coeff(2, 1) + 1.0);
         return QPointF((p.x() * m.coeff(0, 0) + p.y() * m.coeff(0, 1) + m.coeff(0, 2)) * s,
                        (p.x() * m.coeff(1, 0) + p.y() * m.coeff(1, 1) + m.coeff(1, 2)) * s);
     }
 };
 
 #endif