isublayer.h File Reference

Toggleable visual aspect of an output layer. More...

#include "render/legendsymbolitem.h"
#include <QDateTime>
#include <QList>
#include <QMatrix4x4>
#include <QObject>
#include <QRectF>
#include <QString>

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Classes
struct	OpenSWMM::Render::SublayerContext
	Per-frame parameters handed to ISublayer::buildOrUpdateNode(). More...
class	OpenSWMM::Render::ISublayer
	One toggleable visual aspect of a results / model layer. More...

Namespaces
namespace	OpenSWMM
namespace	OpenSWMM::Render

Detailed Description

Toggleable visual aspect of an output layer.

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

    Plan reference: RENDERING_OUTPUT_SUBLAYERS_PLAN.md §3.

    An ISublayer is one paint pass with its own visibility, opacity,
    style bag, legend contribution, and (importantly) a self-declared
    isDynamic() flag that tells AnimationController whether to
    invalidate this sublayer on time-step changes.

    Each output layer (SWMMResultsLayer, SWMM2DResultsLayer, …) owns
    an ordered list of ISublayers; paint order = list order
    (bottom-up). The user can re-order via the layer-tree dock
    (Slice S3) and toggle individual sublayers via the third tier
    of LayerTreeModel.

    The sublayer model refines the IFeatureRenderer abstraction
    (§J.2). A SingleSymbolRenderer produces a one-or-two-sublayer
    default mix (marker + line); a GraduatedRenderer adds a
    ColorRamp sublayer on top. Existing renderer code keeps
    working — it just produces sublayers under the hood instead of
    monolithic paint passes.

    Style bags (style()) are QObjects with Q_PROPERTYs so the
    existing QPropertyModel-backed editor stack drives the UI
    (today: the unified LayerStyleDialog; the original Slice S3
    SublayerStyleDialog was retired).

    Cross-slice: Slice S1 (interface only). Concrete sublayers
    (ConduitLineSublayer, NodeMarkerSublayer, DepthColorRampSublayer,
    IsolineSublayer, ContourBandSublayer, VelocityVectorSublayer)
    land in S2 / S5.