graduatedrasterrenderer.h

Go to the documentation of this file.

 
#ifndef OPENSWMM_RENDER_GRADUATEDRASTERRENDERER_H
#define OPENSWMM_RENDER_GRADUATEDRASTERRENDERER_H
 
#include "render/classificationscheme.h"
#include "render/irasterrenderer.h"
#include "render/scalarramplut.h"
 
#include <QColor>
#include <QPair>
#include <QRgb>
#include <QVector>
 
#include <algorithm>
#include <array>
 
namespace OpenSWMM::Render
{
 
class GraduatedRasterRenderer final : public IRasterRenderer
{
public:
    GraduatedRasterRenderer();
    ~GraduatedRasterRenderer() override = default;
 
    // ── Scheme ─────────────────────────────────────────────────────────
    [[nodiscard]] const ClassificationScheme &scheme() const { return m_scheme; }
    void setScheme(const ClassificationScheme &scheme);
 
    // ── Data range ─────────────────────────────────────────────────────
    [[nodiscard]] double dataMin() const { return m_dataMin; }
    [[nodiscard]] double dataMax() const { return m_dataMax; }
    void setDataRange(double dataMin, double dataMax);
 
    [[nodiscard]] QPair<double, double> effectiveRange() const { return { m_lo, m_hi }; }
 
    // ── Out-of-range policy ────────────────────────────────────────────
    [[nodiscard]] bool clipOutOfRange() const { return m_clipOutOfRange; }
    void setClipOutOfRange(bool on);
 
    // ── Classification ─────────────────────────────────────────────────
    void reclassify(const QVector<double> &samples = {});
 
    [[nodiscard]] const QVector<double> &edges() const { return m_edges; }
    [[nodiscard]] int classCount() const { return std::max(0, int(m_edges.size()) - 1); }
 
    static constexpr int kContinuousLegendRows = 6;
 
    // IRasterRenderer.
    [[nodiscard]] QString rendererId() const override
    {
        return QStringLiteral("graduatedraster");
    }
    [[nodiscard]] QColor colorForValue(double value,
                                       bool isNoData = false) const override;
    [[nodiscard]] QList<LegendSymbolItem> legendSymbolItems() const override;
    [[nodiscard]] QJsonObject toJson() const override;
    void fromJson(const QJsonObject &j) override;
    [[nodiscard]] std::unique_ptr<IRasterRenderer> clone() const override;
 
private:
    void rebake();
 
    ClassificationScheme m_scheme;
    double               m_dataMin = 0.0;
    double               m_dataMax = 1.0;
    QVector<double>      m_edges;
    bool                 m_clipOutOfRange = false;
 
    // Baked by rebake() — read-only on the paint path.
    double                                m_lo = 0.0;
    double                                m_hi = 1.0;
    std::array<QRgb, ScalarRampLut::kSize> m_lut{};
    QVector<QRgb>                         m_classColors;
};
 
} // namespace OpenSWMM::Render
 
#endif // OPENSWMM_RENDER_GRADUATEDRASTERRENDERER_H