#include "kis_perspective_transform_strategy.h"
#include <QPointF>
#include <QPainter>
#include <QPainterPath>
#include <QMatrix4x4>
#include <QVector2D>
#include <Eigen/Dense>
#include "KoColorDisplayRendererInterface.h"
#include "kis_coordinates_converter.h"
#include "tool_transform_args.h"
#include "transform_transaction_properties.h"
#include "krita_utils.h"
#include "kis_cursor.h"
#include "kis_transform_utils.h"
#include "kis_free_transform_strategy_gsl_helpers.h"

Classes
struct	KisPerspectiveTransformStrategy::Private::HandlePoints

struct	KisPerspectiveTransformStrategy::Private

Functions
QVector4D	fromQPointF (const QPointF &pt)

Eigen::Matrix3f	fromQTransform (const QTransform &t)

Eigen::Matrix3f	fromScale (qreal sx, qreal sy)

Eigen::Matrix3f	fromShear (qreal sx, qreal sy)

Eigen::Matrix3f	fromTranslate (const QPointF &pt)

Eigen::Matrix3f	getTransitionMatrix (const QVector< QPointF > &sp)

QPointF	toQPointF (const QVector4D &v)

QTransform	toQTransform (const Eigen::Matrix3f &m)

Function Documentation

◆ fromQPointF()

QVector4D fromQPointF ( const QPointF & pt )

Definition at line 471 of file kis_perspective_transform_strategy.cpp.

                                         {
    return QVector4D(pt.x(), pt.y(), 0, 1.0);
}

◆ fromQTransform()

Eigen::Matrix3f fromQTransform ( const QTransform & t )

Definition at line 368 of file kis_perspective_transform_strategy.cpp.

{
    Eigen::Matrix3f m;
 
    m << t.m11() , t.m21() , t.m31()
        ,t.m12() , t.m22() , t.m32()
        ,t.m13() , t.m23() , t.m33();
 
    return m;
}

◆ fromScale()

Eigen::Matrix3f fromScale	(	qreal	sx,
		qreal	sy )

Definition at line 390 of file kis_perspective_transform_strategy.cpp.

{
    Eigen::Matrix3f m;
 
    m << sx , 0 , 0
        ,0 , sy , 0
        ,0 , 0 , 1;
 
    return m;
}

◆ fromShear()

Eigen::Matrix3f fromShear	(	qreal	sx,
		qreal	sy )

Definition at line 401 of file kis_perspective_transform_strategy.cpp.

{
    Eigen::Matrix3f m;
 
    m << 1 , sx , 0
        ,sy , sx*sy + 1, 0
        ,0 , 0 , 1;
 
    return m;
}

◆ fromTranslate()

Eigen::Matrix3f fromTranslate ( const QPointF & pt )

Definition at line 379 of file kis_perspective_transform_strategy.cpp.

{
    Eigen::Matrix3f m;
 
    m << 1 , 0 , pt.x()
        ,0 , 1 , pt.y()
        ,0 , 0 , 1;
 
    return m;
}

◆ getTransitionMatrix()

Eigen::Matrix3f getTransitionMatrix ( const QVector< QPointF > & sp )

Definition at line 341 of file kis_perspective_transform_strategy.cpp.

{
    Eigen::Matrix3f A;
    Eigen::Vector3f v3;
 
    A << sp[HANDLE_TOP_LEFT].x() , sp[HANDLE_TOP_RIGHT].x() , sp[HANDLE_BOTTOM_LEFT].x()
        ,sp[HANDLE_TOP_LEFT].y() , sp[HANDLE_TOP_RIGHT].y() , sp[HANDLE_BOTTOM_LEFT].y()
        ,                    1 ,                        1   ,                        1;
 
    v3 << sp[HANDLE_BOTTOM_RIGHT].x() , sp[HANDLE_BOTTOM_RIGHT].y() , 1;
 
    Eigen::Vector3f coeffs = A.colPivHouseholderQr().solve(v3);
 
    A.col(0) *= coeffs(0);
    A.col(1) *= coeffs(1);
    A.col(2) *= coeffs(2);
 
    return A;
}

References A.

◆ toQPointF()

QPointF toQPointF ( const QVector4D & v )

Definition at line 475 of file kis_perspective_transform_strategy.cpp.

                                      {
    return v.toVector2DAffine().toPointF();
}

References v.

◆ toQTransform()

QTransform toQTransform ( const Eigen::Matrix3f & m )

Definition at line 361 of file kis_perspective_transform_strategy.cpp.

{
    return QTransform(m(0,0), m(1,0), m(2,0),
                      m(0,1), m(1,1), m(2,1),
                      m(0,2), m(1,2), m(2,2));
}

Classes

Functions