mirror of
https://github.com/jkriege2/JKQtPlotter.git
synced 2024-11-16 10:35:49 +08:00
194 lines
7.7 KiB
C++
194 lines
7.7 KiB
C++
/*
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Copyright (c) 2008-2020 Jan W. Krieger (<jan@jkrieger.de>)
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This software is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License (LGPL) as published by
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the Free Software Foundation, either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License (LGPL) for more details.
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You should have received a copy of the GNU Lesser General Public License (LGPL)
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef jkqtpgraphsparsedfunction_H
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#define jkqtpgraphsparsedfunction_H
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#include <QString>
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#include <QPainter>
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#include <QPair>
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#include "jkqtplotter/jkqtptools.h"
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#include "jkqtcommon/jkqtpmathparser.h"
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#include "jkqtplotter/jkqtplotter_imexport.h"
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#include "jkqtplotter/graphs/jkqtpevaluatedfunction.h"
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// forward declarations
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class JKQTBasePlotter;
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class JKQTPlotter;
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/** \brief extends JKQTPEvaluatedFunctionWithErrorsGraphDrawingBase with the capabilities to define functions from strings
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* that are parsed by JKQTPMathParser
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* \ingroup jkqtplotter_functiongraphs
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*
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* \see JKQTPXParsedFunctionLineGraph and JKQTPYParsedFunctionLineGraph for a concrete implementation, see also JKQTPMathParser
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*/
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class JKQTPLOTTER_LIB_EXPORT JKQTPParsedFunctionLineGraphBase: public JKQTPEvaluatedFunctionWithErrorsGraphDrawingBase {
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Q_OBJECT
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public:
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/** \brief class constructor */
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JKQTPParsedFunctionLineGraphBase(const QString& dependentVariableName, JKQTBasePlotter* parent=nullptr);
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/** \brief class constructor */
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JKQTPParsedFunctionLineGraphBase(const QString& dependentVariableName, JKQTPlotter* parent);
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/** \brief class constructor */
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JKQTPParsedFunctionLineGraphBase(const QString& dependentVariableName, const QString& function, JKQTBasePlotter* parent=nullptr);
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/** \brief class constructor */
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JKQTPParsedFunctionLineGraphBase(const QString& dependentVariableName, const QString& function, JKQTPlotter* parent);
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/** \brief class destructor */
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virtual ~JKQTPParsedFunctionLineGraphBase() override;
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/** \copydoc function */
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QString getFunction() const;
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/** \copydoc errorFunction */
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QString getErrorFunction() const;
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/** \copydoc dependentVariableName */
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QString getDependentVariableName() const;
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public slots:
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/** \copydoc errorFunction */
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void setErrorFunction(const QString & __value);
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/** \copydoc function */
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void setFunction(const QString & __value);
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protected:
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/** \brief INTERNAL data structure combining a JKQTPMathParser and a JKQTPMathParser::jkmpNode
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*/
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struct ParsedFunctionLineGraphFunctionData {
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std::shared_ptr<JKQTPMathParser> parser;
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std::shared_ptr<JKQTPMathParser::jkmpNode> node;
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int varcount;
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QString dependentVariableName;
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};
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/** \brief nache of the dependent variable (e.g. x for a function f(x) ) */
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QString dependentVariableName;
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/** \brief the function to be evaluated for the plot. Use \c x as the free variable, e.g. \c "x^2+2" */
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QString function;
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/** \brief parser data structure for function */
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ParsedFunctionLineGraphFunctionData fdata;
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/** \brief the function to be evaluated to add error indicators to the graph. This function is evaluated to an error for every x. Use \c x as the free variable, e.g. \c "x^2+2". */
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QString errorFunction;
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/** \brief parser data structure for errorFunction */
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ParsedFunctionLineGraphFunctionData efdata;
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/** \brief implements the actual plot function */
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static double evaluateParsedFunction(double x, ParsedFunctionLineGraphFunctionData* fdata) ;
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};
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/*! \brief This implements line plots where the data is taken from a user supplied function \f$ y=f(x) \f$ The function is defined as a string and parsed by JKMathParser
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\ingroup jkqtplotter_parsedFgraphs
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Additional function parameters may be given in the vector parameters. They are accessible in the function as \c p1 , \c p2 , \c p3 , ...
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Parameters may also be given from a data column. Then first the params from the column and the the parameters from the vector are numbered.
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Use the variable \c x in an equation to refer to the free parameter of the curve.
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\see \ref JKQTPlotterParsedFunctionPlot, JKQTPMathParser
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*/
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class JKQTPLOTTER_LIB_EXPORT JKQTPXParsedFunctionLineGraph: public JKQTPParsedFunctionLineGraphBase {
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Q_OBJECT
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public:
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/** \brief class constructor */
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JKQTPXParsedFunctionLineGraph(JKQTBasePlotter* parent=nullptr);
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/** \brief class constructor */
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JKQTPXParsedFunctionLineGraph(JKQTPlotter* parent);
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/** \brief class constructor */
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JKQTPXParsedFunctionLineGraph(const QString& function, JKQTBasePlotter* parent=nullptr);
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/** \brief class constructor */
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JKQTPXParsedFunctionLineGraph(const QString& function, JKQTPlotter* parent);
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/** \brief class destructor */
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virtual ~JKQTPXParsedFunctionLineGraph() override;
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/** \brief plots the graph to the plotter object specified as parent */
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virtual void draw(JKQTPEnhancedPainter& painter) override;
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protected:
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/** \copydoc JKQTPEvaluatedFunctionGraphBase::buildPlotFunctorSpec() */
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virtual PlotFunctorSpec buildPlotFunctorSpec() override;
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/** \copydoc JKQTPEvaluatedFunctionWithErrorsGraphBase::buildPlotFunctorSpec() */
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virtual std::function<QPointF(double)> buildErrorFunctorSpec() override;
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};
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/*! \brief This implements line plots where the data is taken from a user supplied function \f$ x=f(y) \f$ The function is defined as a string and parsed by JKMathParser
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\ingroup jkqtplotter_parsedFgraphs
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Additional function parameters may be given in the vector parameters. They are accessible in the function as \c p1 , \c p2 , \c p3 , ...
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Parameters may also be given from a data column. Then first the params from the column and the the parameters from the vector are numbered.
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Use the variable \c y in an equation to refer to the free parameter of the curve (\c is also understood for convenience).
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\see \ref JKQTPlotterParsedFunctionPlot, JKQTPMathParser
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*/
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class JKQTPLOTTER_LIB_EXPORT JKQTPYParsedFunctionLineGraph: public JKQTPParsedFunctionLineGraphBase {
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Q_OBJECT
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public:
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/** \brief class constructor */
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JKQTPYParsedFunctionLineGraph(JKQTBasePlotter* parent=nullptr);
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/** \brief class constructor */
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JKQTPYParsedFunctionLineGraph(JKQTPlotter* parent);
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/** \brief class constructor */
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JKQTPYParsedFunctionLineGraph(const QString& function, JKQTBasePlotter* parent=nullptr);
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/** \brief class constructor */
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JKQTPYParsedFunctionLineGraph(const QString& function, JKQTPlotter* parent);
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/** \brief class destructor */
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virtual ~JKQTPYParsedFunctionLineGraph() override;
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/** \brief plots the graph to the plotter object specified as parent */
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virtual void draw(JKQTPEnhancedPainter& painter) override;
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protected:
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/** \copydoc JKQTPEvaluatedFunctionGraphBase::buildPlotFunctorSpec() */
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virtual PlotFunctorSpec buildPlotFunctorSpec() override;
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/** \copydoc JKQTPEvaluatedFunctionWithErrorsGraphBase::buildPlotFunctorSpec() */
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virtual std::function<QPointF(double)> buildErrorFunctorSpec() override;
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};
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#endif // jkqtpgraphsparsedfunction_H
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