KisAlgebra2D::OuterCircle Class Reference

#include <kis_algebra_2d.h>

Public Member Functions
qreal	fadeSq (const QPointF &pt) const
	OuterCircle (const QPointF &c, qreal radius)
int	pos (const QPointF &pt) const
qreal	value (const QPointF &pt) const
qreal	valueSq (const QPointF &pt) const

Private Attributes
const QPointF	m_c
const qreal	m_fadeCoeff
const qreal	m_radius
const qreal	m_radius_sq

Detailed Description

Definition at line 547 of file kis_algebra_2d.h.

Constructor & Destructor Documentation

OuterCircle()

KisAlgebra2D::OuterCircle::OuterCircle ( const QPointF & c, qreal radius )

inline

Definition at line 550 of file kis_algebra_2d.h.

        : m_c(c),
          m_radius(radius),
          m_radius_sq(pow2(radius)),
          m_fadeCoeff(1.0 / (pow2(radius + 1.0) - m_radius_sq))
    {
    }

Member Function Documentation

fadeSq()

qreal KisAlgebra2D::OuterCircle::fadeSq ( const QPointF & pt ) const

inline

Definition at line 572 of file kis_algebra_2d.h.

                                          {
        const qreal valSq = kisSquareDistance(pt, m_c);
        return (valSq - m_radius_sq) * m_fadeCoeff;
    }

References kisSquareDistance().

pos()

int KisAlgebra2D::OuterCircle::pos ( const QPointF & pt ) const

inline

Definition at line 568 of file kis_algebra_2d.h.

                                     {
        return signZZ(valueSq(pt));
    }

References KisAlgebra2D::signZZ().

value()

qreal KisAlgebra2D::OuterCircle::value ( const QPointF & pt ) const

inline

Definition at line 564 of file kis_algebra_2d.h.

                                         {
        return kisDistance(pt, m_c) - m_radius;
    }

References kisDistance().

valueSq()

qreal KisAlgebra2D::OuterCircle::valueSq ( const QPointF & pt ) const

inline

Definition at line 558 of file kis_algebra_2d.h.

                                           {
        const qreal val = value(pt);
 
        return signZZ(val) * pow2(val);
    }

References pow2(), KisAlgebra2D::signZZ(), and value().

Member Data Documentation

m_c

const QPointF KisAlgebra2D::OuterCircle::m_c

private

Definition at line 578 of file kis_algebra_2d.h.

m_fadeCoeff

const qreal KisAlgebra2D::OuterCircle::m_fadeCoeff

private

Definition at line 581 of file kis_algebra_2d.h.

m_radius

const qreal KisAlgebra2D::OuterCircle::m_radius

private

Definition at line 579 of file kis_algebra_2d.h.

m_radius_sq

const qreal KisAlgebra2D::OuterCircle::m_radius_sq

private

Definition at line 580 of file kis_algebra_2d.h.

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

• libs/global/kis_algebra_2d.h