chart2/source/tools/LinearRegressionCurveCalculator.cxx

   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
  22 using namespace ::com::sun::star;
  23
  24 namespace chart
  25 {
  26
  27 LinearRegressionCurveCalculator::LinearRegressionCurveCalculator() :
  28     PolynomialRegressionCurveCalculator()
  29 {}
  30
  31 LinearRegressionCurveCalculator::~LinearRegressionCurveCalculator()
  32 {}
  33
  34 void LinearRegressionCurveCalculator::setRegressionProperties(
  35     sal_Int32 /*aDegree*/,
  36     sal_Bool  aForceIntercept,
  37     double    aInterceptValue,
  38     sal_Int32 aPeriod )
  39 {
  40     PolynomialRegressionCurveCalculator::setRegressionProperties(
  41                                             1,
  42                                             aForceIntercept,
  43                                             aInterceptValue,
  44                                             aPeriod);
  45 }
  46
  47 uno::Sequence< geometry::RealPoint2D > SAL_CALL LinearRegressionCurveCalculator::getCurveValues(
  48     double min, double max, ::sal_Int32 nPointCount,
  49     const uno::Reference< chart2::XScaling >& xScalingX,
  50     const uno::Reference< chart2::XScaling >& xScalingY,
  51     sal_Bool bMaySkipPointsInCalculation )
  52 {
  53     if( bMaySkipPointsInCalculation &&
  54         isLinearScaling( xScalingX ) &&
  55         isLinearScaling( xScalingY ))
  56     {
  57         // optimize result
  58         uno::Sequence< geometry::RealPoint2D > aResult( 2 );
  59         aResult[0].X = min;
  60         aResult[0].Y = getCurveValue( min );
  61         aResult[1].X = max;
  62         aResult[1].Y = getCurveValue( max );
  63
  64         return aResult;
  65     }
  66     return RegressionCurveCalculator::getCurveValues( min, max, nPointCount, xScalingX, xScalingY, bMaySkipPointsInCalculation );
  67 }
  68
  69 } //  namespace chart
  70
  71 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */