File indexing completed on 2025-01-26 03:34:21

 /*
     File                 : XYInterpolationCurve.h
     Project              : LabPlot
     Description          : A xy-curve defined by an interpolation
     --------------------------------------------------------------------
     SPDX-FileCopyrightText: 2016-2021 Stefan Gerlach <stefan.gerlach@uni.kn>
     SPDX-FileCopyrightText: 2017 Alexander Semke <alexander.semke@web.de>
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #ifndef XYINTERPOLATIONCURVE_H
 #define XYINTERPOLATIONCURVE_H
 
 #include "backend/worksheet/plots/cartesian/XYAnalysisCurve.h"
 extern "C" {
 #include "backend/nsl/nsl_interp.h"
 }
 #include <gsl/gsl_version.h>
 
 class XYInterpolationCurvePrivate;
 
 class XYInterpolationCurve : public XYAnalysisCurve {
     Q_OBJECT
 
 public:
     enum class PointsMode { Auto, Multiple, Custom };
     struct InterpolationData {
         InterpolationData(){};
 
         nsl_interp_type type{nsl_interp_type_linear}; // type of interpolation
         nsl_interp_pch_variant variant{nsl_interp_pch_variant_finite_difference}; // variant of cubic Hermite interpolation
         double tension{0.0}, continuity{0.0}, bias{0.0}; // TCB values
         nsl_interp_evaluate evaluate{nsl_interp_evaluate_function}; // what to evaluate
         size_t npoints{100}; // nr. of points
         XYInterpolationCurve::PointsMode pointsMode{PointsMode::Auto}; // mode to interpret points
         bool autoRange{true}; // use all data?
         // TODO: use Range
         QVector<double> xRange{0, 0}; // x range for interpolation
     };
 
     explicit XYInterpolationCurve(const QString& name);
     ~XYInterpolationCurve() override;
 
     void recalculate() override;
 
     QIcon icon() const override;
     void save(QXmlStreamWriter*) const override;
     bool load(XmlStreamReader*, bool preview) override;
 
     CLASS_D_ACCESSOR_DECL(InterpolationData, interpolationData, InterpolationData)
     typedef XYAnalysisCurve::Result InterpolationResult;
     virtual const XYAnalysisCurve::Result& result() const override;
 
     typedef XYInterpolationCurvePrivate Private;
 
 protected:
     XYInterpolationCurve(const QString& name, XYInterpolationCurvePrivate* dd);
 
 private:
     Q_DECLARE_PRIVATE(XYInterpolationCurve)
 
 Q_SIGNALS:
     void interpolationDataChanged(const XYInterpolationCurve::InterpolationData&);
 };
 
 #endif