graduatedrenderer.h File Reference

Renderer that classifies a numeric attribute into bins, each with its own colour. More...

#include "render/attributesource.h"
#include "render/colorramp.h"
#include "render/ifeaturerenderer.h"
#include "render/intervalbinner.h"
#include <QColor>
#include <QHash>
#include <QList>
#include <QString>
#include <QVector>

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Classes
class	OpenSWMM::Render::GraduatedRenderer
	Classifies a numeric attribute into bins and assigns a colour per bin. More...

Namespaces
namespace	OpenSWMM
namespace	OpenSWMM::Render

Detailed Description

Renderer that classifies a numeric attribute into bins, each with its own colour.

Author

Caleb Buahin caleb.nosp@m..bua.nosp@m.hin@g.nosp@m.mail.nosp@m..com

Date

2026

License\n GPL-3.0-or-later

    GraduatedRenderer is what drives the per-attribute heatmap on
    SWMMResultsLayer (depth / head / flow) and SWMM2DResultsLayer
    (depth). It carries:
      - classifyAttribute  — which attribute drives binning
      - minValue / maxValue — the value range covered by the bins
      - binColors          — N QColors, one per bin
      - baseSymbol         — the SymbolStyle template; the renderer
                             overrides "color" in every SymbolLayer
                             with the per-bin colour at paint time.

    v1 uses equal-interval binning (linear) only. Slice BB Phase
    8.6.2 will swap binColors[] for a proper ColorRamp + IntervalBinner
    (Quantile / StdDev / Jenks / Log binning). The public symbolFor /
    legendSymbolItems contract does not change at that swap.

    Cross-slice: Slice BI Phase 8.13.6 (see GUI_IMPLEMENTATION_PLAN.md
    §J.2 + §J.4). Sub-phase 8.13.6.2 — concrete renderer class.