kis_nu_bspline_2d.h

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/*
 *  SPDX-FileCopyrightText: 2014 Dmitry Kazakov <dimula73@gmail.com>
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 */
 
#ifndef __KIS_NU_BSPLINE_2D_H
#define __KIS_NU_BSPLINE_2D_H
 
#include <kritaimage_export.h>
 
#include <QScopedPointer>
#include <QVector>
#include <QPointF>
#include <QSize>
 
#include "kis_bspline.h"
 
 
namespace KisBSplines {
 
class KRITAIMAGE_EXPORT KisNUBSpline2D
{
public:
    KisNUBSpline2D(const QVector<double> &xSamples, BorderCondition bcX,
                   const QVector<double> &ySamples, BorderCondition bcY);
 
    ~KisNUBSpline2D();
 
    template <class FunctionOp>
        inline void initializeSpline(const FunctionOp &op) {
 
        const int xSize = m_xSamples.size();
        const int ySize = m_ySamples.size();
 
        QVector<float> values(xSize * ySize);
 
        for (int x = 0; x < xSize; x++) {
            double fx = m_xSamples[x];
 
            for (int y = 0; y < ySize; y++) {
                double fy = m_ySamples[y];
                float v = op(fx, fy);
                values[x * ySize + y] = v;
            }
        }
 
        initializeSplineImpl(values);
    }
 
    float value(float x, float y) const;
 
    QPointF topLeft() const;
    QPointF bottomRight() const;
 
    BorderCondition borderConditionX() const;
    BorderCondition borderConditionY() const;
 
private:
    void initializeSplineImpl(const QVector<float> &values);
 
private:
    struct Private;
    const QScopedPointer<Private> m_d;
 
    const QVector<double> m_xSamples;
    const QVector<double> m_ySamples;
};
 
}
 
#endif /* __KIS_NU_BSPLINE_2D_H */