/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * $RCSfile: LogarithmicRegressionCurveCalculator.hxx,v $
 * $Revision: 1.5 $
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/
#ifndef CHART2_LOGARITHMICREGRESSIONCURVECALCULATOR_HXX
#define CHART2_LOGARITHMICREGRESSIONCURVECALCULATOR_HXX

#include "RegressionCurveCalculator.hxx"

namespace chart
{

class LogarithmicRegressionCurveCalculator :
        public RegressionCurveCalculator
{
public:
    LogarithmicRegressionCurveCalculator();
    virtual ~LogarithmicRegressionCurveCalculator();

protected:
    virtual ::rtl::OUString ImplGetRepresentation(
        const ::com::sun::star::uno::Reference< ::com::sun::star::util::XNumberFormatter >& xNumFormatter,
        ::sal_Int32 nNumberFormatKey ) const;

private:
    // ____ XRegressionCurveCalculator ____
    virtual void SAL_CALL recalculateRegression(
        const ::com::sun::star::uno::Sequence< double >& aXValues,
        const ::com::sun::star::uno::Sequence< double >& aYValues )
        throw (::com::sun::star::uno::RuntimeException);
    virtual double SAL_CALL getCurveValue( double x )
        throw (::com::sun::star::lang::IllegalArgumentException,
               ::com::sun::star::uno::RuntimeException);
    virtual ::com::sun::star::uno::Sequence< ::com::sun::star::geometry::RealPoint2D > SAL_CALL getCurveValues(
        double min,
        double max,
        ::sal_Int32 nPointCount,
        const ::com::sun::star::uno::Reference< ::com::sun::star::chart2::XScaling >& xScalingX,
        const ::com::sun::star::uno::Reference< ::com::sun::star::chart2::XScaling >& xScalingY,
        ::sal_Bool bMaySkipPointsInCalculation )
        throw (::com::sun::star::lang::IllegalArgumentException,
               ::com::sun::star::uno::RuntimeException);

    // formula is: f(x) = m_fSlope * log( x ) + m_fIntercept
    double m_fSlope;
    double m_fIntercept;
};

} //  namespace chart

// CHART2_LOGARITHMICREGRESSIONCURVECALCULATOR_HXX
#endif