Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #include "LinearRegressionCurveCalculator.hxx"
      21             : #include "macros.hxx"
      22             : #include "RegressionCalculationHelper.hxx"
      23             : 
      24             : #include <rtl/math.hxx>
      25             : #include <rtl/ustrbuf.hxx>
      26             : 
      27             : using namespace ::com::sun::star;
      28             : 
      29             : namespace chart
      30             : {
      31             : 
      32           9 : LinearRegressionCurveCalculator::LinearRegressionCurveCalculator() :
      33           9 :     PolynomialRegressionCurveCalculator()
      34           9 : {}
      35             : 
      36          18 : LinearRegressionCurveCalculator::~LinearRegressionCurveCalculator()
      37          18 : {}
      38             : 
      39           9 : void LinearRegressionCurveCalculator::setRegressionProperties(
      40             :     sal_Int32 /*aDegree*/,
      41             :     sal_Bool  aForceIntercept,
      42             :     double    aInterceptValue,
      43             :     sal_Int32 aPeriod )
      44             :         throw (uno::RuntimeException, std::exception)
      45             : {
      46             :     PolynomialRegressionCurveCalculator::setRegressionProperties(
      47             :                                             1,
      48             :                                             aForceIntercept,
      49             :                                             aInterceptValue,
      50           9 :                                             aPeriod);
      51           9 : }
      52             : 
      53           9 : uno::Sequence< geometry::RealPoint2D > SAL_CALL LinearRegressionCurveCalculator::getCurveValues(
      54             :     double min, double max, ::sal_Int32 nPointCount,
      55             :     const uno::Reference< chart2::XScaling >& xScalingX,
      56             :     const uno::Reference< chart2::XScaling >& xScalingY,
      57             :     sal_Bool bMaySkipPointsInCalculation )
      58             :     throw (lang::IllegalArgumentException,
      59             :            uno::RuntimeException, std::exception)
      60             : {
      61          18 :     if( bMaySkipPointsInCalculation &&
      62          18 :         isLinearScaling( xScalingX ) &&
      63           9 :         isLinearScaling( xScalingY ))
      64             :     {
      65             :         // optimize result
      66           9 :         uno::Sequence< geometry::RealPoint2D > aResult( 2 );
      67           9 :         aResult[0].X = min;
      68           9 :         aResult[0].Y = this->getCurveValue( min );
      69           9 :         aResult[1].X = max;
      70           9 :         aResult[1].Y = this->getCurveValue( max );
      71             : 
      72           9 :         return aResult;
      73             :     }
      74           0 :     return RegressionCurveCalculator::getCurveValues( min, max, nPointCount, xScalingX, xScalingY, bMaySkipPointsInCalculation );
      75             : }
      76             : 
      77             : } //  namespace chart
      78             : 
      79             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */