PotentialRegressionCurveCalculator.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 *   Licensed to the Apache Software Foundation (ASF) under one or more
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#pragma once
 
#include "RegressionCurveCalculator.hxx"
 
namespace chart
{
 
class PotentialRegressionCurveCalculator final : public RegressionCurveCalculator
{
public:
    PotentialRegressionCurveCalculator();
    virtual ~PotentialRegressionCurveCalculator() override;
 
protected:
    virtual OUString ImplGetRepresentation(
        const css::uno::Reference<css::util::XNumberFormatter>& xNumFormatter,
        sal_Int32 nNumberFormatKey, sal_Int32* pFormulaLength = nullptr ) const override;
 
private:
    // ____ XRegressionCurveCalculator ____
    virtual void SAL_CALL recalculateRegression(
        const css::uno::Sequence<double>& aXValues,
        const css::uno::Sequence<double>& aYValues ) override;
 
    virtual double SAL_CALL getCurveValue( double x ) override;
 
    virtual css::uno::Sequence<css::geometry::RealPoint2D> SAL_CALL getCurveValues(
        double min,
        double max,
        sal_Int32 nPointCount,
        const css::uno::Reference<css::chart2::XScaling>& xScalingX,
        const css::uno::Reference<css::chart2::XScaling>& xScalingY,
        sal_Bool bMaySkipPointsInCalculation ) override;
 
    // formula is: f(x) = x ^ m_fSlope * m_fSign * m_fIntercept
    double m_fSlope;
    double m_fIntercept;
    double m_fSign;
};
 
} //  namespace chart
 
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