mesh::SizeField Class Reference

Distance-to-feature field sampled as a max-area function. More...

#include <sizefield.h>

Collaboration diagram for mesh::SizeField:

Public Member Functions
bool	build (const QRectF &bbox, const QVector< ConstraintSegment > &segs, const QVector< QVector< QPointF > > &rings, const QVector< SteinerPoint > &pts, const SizeFieldOptions &opt)
	Build the field. Returns false (and leaves the field invalid) when there is nothing to build from — degenerate bbox, no seeds, or nonsensical options. Callers fall back to the uniform cap.
double	targetAreaAt (double x, double y) const
bool	isValid () const
double	pitch () const
int	cols () const
int	rows () const
double	distanceAt (double x, double y) const
double	terrainSizeAt (double x, double y) const

Detailed Description

Distance-to-feature field sampled as a max-area function.

Build once per generation, then install hook.targetAreaAt = [&f](double x, double y){ return f.targetAreaAt(x,y); }. The field must outlive the triangulate() call that samples it.

Member Function Documentation

build()

bool mesh::SizeField::build	(	const QRectF &	bbox,
		const QVector< ConstraintSegment > &	segs,
		const QVector< QVector< QPointF > > &	rings,
		const QVector< SteinerPoint > &	pts,
		const SizeFieldOptions &	opt
	)

Build the field. Returns false (and leaves the field invalid) when there is nothing to build from — degenerate bbox, no seeds, or nonsensical options. Callers fall back to the uniform cap.

segs constraint segments (conduits, aux lines) — every edge seeds. rings additional ring paths to seed (valid hole rings). pts Steiner points; only tagged ones (marker != 0) seed.

cols()

int mesh::SizeField::cols ( ) const

inline

distanceAt()

double mesh::SizeField::distanceAt	(	double	x,
		double	y
	)		const

Distance to the nearest seed at (x, y), bilinear over cell centres. Exposed for tests and diagnostics.

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isValid()

bool mesh::SizeField::isValid ( ) const

inline

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pitch()

double mesh::SizeField::pitch ( ) const

inline

rows()

int mesh::SizeField::rows ( ) const

inline

targetAreaAt()

double mesh::SizeField::targetAreaAt	(	double	x,
		double	y
	)		const

Maximum permitted triangle area at (x, y) — the RefineHook contract. Never returns <= 0 on a valid field (the near-size area is the lower bound), so a graded field always constrains.

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terrainSizeAt()

double mesh::SizeField::terrainSizeAt	(	double	x,
		double	y
	)		const

Terrain-density size bound at (x, y), or 0 when SizeFieldOptions::terrainDensity was off / no untagged point was given. Exposed for tests and diagnostics.

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

• /home/runner/work/openswmm.gui/openswmm.gui/include/mesh/sizefield.h
• /home/runner/work/openswmm.gui/openswmm.gui/src/mesh/sizefield.cpp