qwt3d_bar.h

#ifndef QWT3D_BAR_H
#define QWT3D_BAR_H
 
#include "qwt3d_plotitem.h"
#include "qwt3d_types.h"
#include "qwt3d_color.h"
 
#include <QVector>
#include <vector>
 
#include "qwt_point_3d.h"
 
class QWT3D_EXPORT Qwt3DBar : public Qwt3DPlotItem
{
    QWT_DECLARE_PRIVATE(Qwt3DBar)
 
public:
    enum BarStyle
    {
        Filled,      
        FilledMesh,  
        Wireframe    
    };
 
    Qwt3DBar();
    ~Qwt3DBar() override;
 
    // 1D series — bars placed freely on the xy-plane
 
    void setSamples(const QVector<QwtPoint3D>& samples);
    void setSamples(const QVector<double>& x, const QVector<double>& heights);
 
    // 2D grid — 3D histogram (bar3 style)
 
    void setSamples(double** z, int columns, int rows,
                    double minX, double maxX, double minY, double maxY);
    void setSamples(const Qwt3DFunctionData& data);
 
    // Bar footprint and baseline
 
    double barWidth() const;
    void setBarWidth(double w);
    double barDepth() const;
    void setBarDepth(double d);
    double baseline() const;
    void setBaseline(double z);
 
    // Style and color
 
    BarStyle barStyle() const;
    void setBarStyle(BarStyle style);
    void setDataColor(Qwt3DColor* color);
    const Qwt3DColor* dataColor() const;
    void invalidateColors();
    RGBA meshColor() const;
    void setMeshColor(RGBA color);
    double meshLineWidth() const;
    void setMeshLineWidth(double width);
 
    // Qwt3DPlotItem interface
 
    int rtti() const override;
    void draw() override;
    ParallelEpiped hull() const override;
    void populateLegendColors(ColorVector& colors) const override;
 
    // Data accessors for serialization support
    QVector<QwtPoint3D> samples() const;
    bool isGridData() const;
    int gridColumns() const;
    int gridRows() const;
    double gridMinX() const;
    double gridMaxX() const;
    double gridMinY() const;
    double gridMaxY() const;
    std::vector<std::vector<double>> gridZValues() const;
 
private:
    void buildVBO();
    void recomputeBarSpecs();
    void pushColorRange() const;
};
 
#endif // QWT3D_BAR_H