FitVector Class Reference

Public Member Functions
qreal	dot (const FitVector &v) const
	FitVector ()
	FitVector (const QPointF &a, const QPointF &b)
	FitVector (const QPointF &p)
qreal	length () const
void	negate ()
void	normalize ()
QPointF	operator+ (const QPointF &p)
void	scale (qreal s)

Public Attributes
qreal	m_X
qreal	m_Y

Detailed Description

Definition at line 25 of file KoCurveFit.cpp.

Constructor & Destructor Documentation

FitVector() [1/3]

FitVector::FitVector ( const QPointF & p )

inline

Definition at line 27 of file KoCurveFit.cpp.

    : m_X(p.x())
    , m_Y(p.y())
    {
    }

FitVector() [2/3]

FitVector::FitVector ( )

inline

Definition at line 33 of file KoCurveFit.cpp.

    : m_X(0)
    , m_Y(0)
    {
    }

FitVector() [3/3]

FitVector::FitVector ( const QPointF & a, const QPointF & b )

inline

Definition at line 39 of file KoCurveFit.cpp.

    : m_X(a.x() - b.x())
    , m_Y(a.y() - b.y())
    {
    }

Member Function Documentation

dot()

qreal FitVector::dot ( const FitVector & v ) const

inline

Definition at line 67 of file KoCurveFit.cpp.

                                        {
        return ((m_X*v.m_X) + (m_Y*v.m_Y));
    }

References m_X, m_Y, and v.

length()

qreal FitVector::length ( ) const

inline

Definition at line 71 of file KoCurveFit.cpp.

                         {
        return (qreal) sqrt(m_X*m_X + m_Y*m_Y);
    }

References m_X, and m_Y.

negate()

void FitVector::negate ( )

inline

Definition at line 53 of file KoCurveFit.cpp.

                  {
        m_X = -m_X;
        m_Y = -m_Y;
    }

References m_X, and m_Y.

normalize()

void FitVector::normalize ( )

inline

Definition at line 45 of file KoCurveFit.cpp.

                     {
        qreal len = length();
        if (qFuzzyCompare(len, qreal(0.0))) {
            return;
        }
        m_X /= len; m_Y /= len;
    }

References length(), m_X, m_Y, and qFuzzyCompare().

operator+()

QPointF FitVector::operator+ ( const QPointF & p )

inline

Definition at line 75 of file KoCurveFit.cpp.

                                        {
        QPointF b(p.x() + m_X, p.y() + m_Y);
        return b;
    }

References m_X, m_Y, and p.

scale()

void FitVector::scale ( qreal s )

inline

Definition at line 58 of file KoCurveFit.cpp.

                        {
        qreal len = length();
        if (qFuzzyCompare(len, qreal(0.0))) {
            return;
        }
        m_X *= s / len;
        m_Y *= s / len;
    }

References length(), m_X, m_Y, and qFuzzyCompare().

Member Data Documentation

m_X

qreal FitVector::m_X

Definition at line 81 of file KoCurveFit.cpp.

m_Y

qreal FitVector::m_Y

Definition at line 81 of file KoCurveFit.cpp.

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

• libs/flake/KoCurveFit.cpp