source: ntrip/trunk/BNC/qwt/qwt_spline_parametrization.cpp

/******************************************************************************
 * Qwt Widget Library
 * Copyright (C) 1997   Josef Wilgen
 * Copyright (C) 2002   Uwe Rathmann
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the Qwt License, Version 1.0
 *****************************************************************************/

#include "qwt_spline_parametrization.h"

/*!
   Constructor
   \param type Parametrization type
   \sa type()
 */
QwtSplineParametrization::QwtSplineParametrization( int type )
    : m_type( type )
{
}

//! Destructor
QwtSplineParametrization::~QwtSplineParametrization()
{
}

/*!
   \brief Calculate the parameter value increment for 2 points

   \param point1 First point
   \param point2 Second point

   \return Value increment
 */
double QwtSplineParametrization::valueIncrement(
    const QPointF& point1, const QPointF& point2 ) const
{
    switch( m_type )
    {
        case QwtSplineParametrization::ParameterX:
        {
            return valueIncrementX( point1, point2 );
        }
        case QwtSplineParametrization::ParameterY:
        {
            return valueIncrementY( point1, point2 );
        }
        case QwtSplineParametrization::ParameterCentripetal:
        {
            return valueIncrementCentripetal( point1, point2 );
        }
        case QwtSplineParametrization::ParameterChordal:
        {
            return valueIncrementChordal( point1, point2 );
        }
        case QwtSplineParametrization::ParameterManhattan:
        {
            return valueIncrementManhattan( point1, point2 );
        }
        case QwtSplineParametrization::ParameterUniform:
        {
            return valueIncrementUniform( point1, point2 );
        }
        default:
        {
            return 1;
        }
    }
}

//! \return Parametrization type
int QwtSplineParametrization::type() const
{
    return m_type;
}