SWMMLayerQSGRenderer Class Reference

#include <swmmlayerqsgrenderer.h>

Inheritance diagram for SWMMLayerQSGRenderer:

Collaboration diagram for SWMMLayerQSGRenderer:

Public Member Functions
	SWMMLayerQSGRenderer (QQuickItem *parent=nullptr)
	~SWMMLayerQSGRenderer () override
void	setLayer (SWMMModelLayer *layer)
void	setMapExtent (const MapExtent &extent)
void	forceRebuild ()
quint64	contentRevision () const noexcept

Protected Member Functions
QSGNode *	updatePaintNode (QSGNode *oldNode, UpdatePaintNodeData *) override

Constructor & Destructor Documentation

SWMMLayerQSGRenderer()

SWMMLayerQSGRenderer::SWMMLayerQSGRenderer ( QQuickItem *  parent = nullptr )

explicit

~SWMMLayerQSGRenderer()

SWMMLayerQSGRenderer::~SWMMLayerQSGRenderer ( )

overridedefault

Member Function Documentation

contentRevision()

quint64 SWMMLayerQSGRenderer::contentRevision ( ) const

inlinenoexcept

Monotonic counter bumped every time an external change marks this renderer's content dirty. MapCanvas caches the grabbed QSG framebuffer and must regrab whenever the overlay's content has moved on; comparing this revision against the one recorded at grab time closes the window where a renderer learns of a change after the canvas has already consumed (and cleared) its own dirty flag. Extent and layer-pointer changes are keyed separately by the canvas and deliberately do NOT bump this — bumping there would force a regrab on the paint that pushed them, one frame late, every frame.

forceRebuild()

void SWMMLayerQSGRenderer::forceRebuild

(

)

Force a full geometry rebuild on the next updatePaintNode, even when the bound layer pointer is unchanged. Needed when the GPU/CPU render toggle flips qsgRenderKinds back on: setLayer() no-ops on the same layer, and a self-render while the overlay was off may have already consumed m_contentDirty against empty (un-owned) geometry.

setLayer()

void SWMMLayerQSGRenderer::setLayer

(

SWMMModelLayer *

layer

)

Bind the renderer to a SWMMModelLayer. Disconnects the previous layer's signals; connects the new one's repaintRequested to trigger a geometry rebuild. Pass nullptr to clear.

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setMapExtent()

void SWMMLayerQSGRenderer::setMapExtent

(

const MapExtent &

extent

)

Update the visible map extent. A pure pan (same extent dimensions) only schedules a matrix update. A zoom (changed dimensions) sets m_contentDirty so line widths and glyph sizes are recomputed.

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updatePaintNode()

QSGNode * SWMMLayerQSGRenderer::updatePaintNode ( QSGNode *  oldNode, UpdatePaintNodeData *    )

overrideprotected

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The documentation for this class was generated from the following files:

• /home/runner/work/openswmm.gui/openswmm.gui/include/map/swmmlayerqsgrenderer.h
• /home/runner/work/openswmm.gui/openswmm.gui/src/map/swmmlayerqsgrenderer.cpp