KisFourPointInterpolatorForward Class Reference

#include <kis_four_point_interpolator_forward.h>

Public Member Functions
QPointF	getValue () const
	KisFourPointInterpolatorForward (const QPolygonF &srcPolygon, const QPolygonF &dstPolygon)
QPointF	map (const QPointF &pt)
void	setX (qreal x)
void	setY (qreal y)

Private Attributes
QPointF	m_dstBase
qreal	m_forwardCoeffX
qreal	m_forwardCoeffY
QPointF	m_h0
QPointF	m_h1
QPointF	m_srcBase
QPointF	m_v0
qreal	m_xProp
qreal	m_yProp

Detailed Description

A--—B The polygons must be initialized in this order: | | | | polygon << A << B << D << C; C--—D

Definition at line 22 of file kis_four_point_interpolator_forward.h.

Constructor & Destructor Documentation

KisFourPointInterpolatorForward()

KisFourPointInterpolatorForward::KisFourPointInterpolatorForward ( const QPolygonF & srcPolygon, const QPolygonF & dstPolygon )

inline

Definition at line 25 of file kis_four_point_interpolator_forward.h.

                                                                                              {
        m_srcBase = srcPolygon[0];
        m_dstBase = dstPolygon[0];
 
        m_h0 = dstPolygon[1] - dstPolygon[0]; // BA
        m_h1 = dstPolygon[2] - dstPolygon[3]; // DC
 
        m_v0 = dstPolygon[3] - dstPolygon[0]; // CA
 
        m_forwardCoeffX = 1.0 / (srcPolygon[1].x() - srcPolygon[0].x());
        m_forwardCoeffY = 1.0 / (srcPolygon[3].y() - srcPolygon[0].y());
 
        m_xProp = 0;
        m_yProp = 0;
    }

References m_dstBase, m_forwardCoeffX, m_forwardCoeffY, m_h0, m_h1, m_srcBase, m_v0, m_xProp, and m_yProp.

Member Function Documentation

getValue()

QPointF KisFourPointInterpolatorForward::getValue ( ) const

inline

Definition at line 57 of file kis_four_point_interpolator_forward.h.

                                    {
        QPointF dstPoint = m_dstBase +
            m_yProp * m_v0 +
            m_xProp * (m_yProp * m_h1 + (1.0 - m_yProp) * m_h0);
 
        return dstPoint;
    }

References dstPoint, m_dstBase, m_h0, m_h1, m_v0, m_xProp, and m_yProp.

map()

QPointF KisFourPointInterpolatorForward::map ( const QPointF & pt )

inline

Definition at line 41 of file kis_four_point_interpolator_forward.h.

                                          {
        setX(pt.x());
        setY(pt.y());
        return getValue();
    }

References getValue(), setX(), and setY().

setX()

void KisFourPointInterpolatorForward::setX ( qreal x )

inline

Definition at line 47 of file kis_four_point_interpolator_forward.h.

                              {
        qreal diff = x - m_srcBase.x();
        m_xProp = diff * m_forwardCoeffX;
    }

References m_forwardCoeffX, m_srcBase, and m_xProp.

setY()

void KisFourPointInterpolatorForward::setY ( qreal y )

inline

Definition at line 52 of file kis_four_point_interpolator_forward.h.

                              {
        qreal diff = y - m_srcBase.y();
        m_yProp = diff * m_forwardCoeffY;
    }

References m_forwardCoeffY, m_srcBase, and m_yProp.

Member Data Documentation

m_dstBase

QPointF KisFourPointInterpolatorForward::m_dstBase

private

Definition at line 67 of file kis_four_point_interpolator_forward.h.

m_forwardCoeffX

qreal KisFourPointInterpolatorForward::m_forwardCoeffX

private

Definition at line 73 of file kis_four_point_interpolator_forward.h.

m_forwardCoeffY

qreal KisFourPointInterpolatorForward::m_forwardCoeffY

private

Definition at line 74 of file kis_four_point_interpolator_forward.h.

m_h0

QPointF KisFourPointInterpolatorForward::m_h0

private

Definition at line 69 of file kis_four_point_interpolator_forward.h.

m_h1

QPointF KisFourPointInterpolatorForward::m_h1

private

Definition at line 70 of file kis_four_point_interpolator_forward.h.

m_srcBase

QPointF KisFourPointInterpolatorForward::m_srcBase

private

Definition at line 66 of file kis_four_point_interpolator_forward.h.

m_v0

QPointF KisFourPointInterpolatorForward::m_v0

private

Definition at line 71 of file kis_four_point_interpolator_forward.h.

m_xProp

qreal KisFourPointInterpolatorForward::m_xProp

private

Definition at line 76 of file kis_four_point_interpolator_forward.h.

m_yProp

qreal KisFourPointInterpolatorForward::m_yProp

private

Definition at line 77 of file kis_four_point_interpolator_forward.h.

---

The documentation for this class was generated from the following file:

• libs/image/kis_four_point_interpolator_forward.h