qwt_spline_parametrization.cpp

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/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
 * 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"

QwtSplineParametrization::QwtSplineParametrization( int type ):
    d_type( type )
{
}

QwtSplineParametrization::~QwtSplineParametrization()
{
}
 
double QwtSplineParametrization::valueIncrement(
    const QPointF &point1, const QPointF &point2 ) const
{
    switch( d_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;
        }
    }
}

int QwtSplineParametrization::type() const
{
    return d_type;
}