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Diffstat (limited to '')
-rw-r--r-- | chart2/source/tools/LinearRegressionCurveCalculator.cxx | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/chart2/source/tools/LinearRegressionCurveCalculator.cxx b/chart2/source/tools/LinearRegressionCurveCalculator.cxx new file mode 100644 index 000000000..ee836555b --- /dev/null +++ b/chart2/source/tools/LinearRegressionCurveCalculator.cxx @@ -0,0 +1,69 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#include <LinearRegressionCurveCalculator.hxx> + +using namespace ::com::sun::star; + +namespace chart +{ + +LinearRegressionCurveCalculator::LinearRegressionCurveCalculator() +{} + +LinearRegressionCurveCalculator::~LinearRegressionCurveCalculator() +{} + +void LinearRegressionCurveCalculator::setRegressionProperties( + sal_Int32 /*aDegree*/, + sal_Bool aForceIntercept, + double aInterceptValue, + sal_Int32 aPeriod, + sal_Int32 /*nMovingType*/) +{ + PolynomialRegressionCurveCalculator::setRegressionProperties( + 1, + aForceIntercept, + aInterceptValue, + aPeriod, + 0); +} + +uno::Sequence< geometry::RealPoint2D > SAL_CALL LinearRegressionCurveCalculator::getCurveValues( + double min, double max, ::sal_Int32 nPointCount, + const uno::Reference< chart2::XScaling >& xScalingX, + const uno::Reference< chart2::XScaling >& xScalingY, + sal_Bool bMaySkipPointsInCalculation ) +{ + if( bMaySkipPointsInCalculation && + isLinearScaling( xScalingX ) && + isLinearScaling( xScalingY )) + { + // optimize result + uno::Sequence< geometry::RealPoint2D > aResult{ { min, getCurveValue( min ) }, + { max, getCurveValue( max ) } }; + + return aResult; + } + return RegressionCurveCalculator::getCurveValues( min, max, nPointCount, xScalingX, xScalingY, bMaySkipPointsInCalculation ); +} + +} // namespace chart + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |