mesh::TerrainSizeOptions Struct Reference

#include <terrainsizefield.h>

Collaboration diagram for mesh::TerrainSizeOptions:

Public Attributes
double	tolerance = 0.0
	Vertical tolerance in the DEM's units. <= 0 = no field.
int	maxLevel = 10
	Largest block tested: 2^maxLevel pixels (1024).
int	outLevel = 2
qint64	maxBandBytes = 256ll * 1024 * 1024
	a full-width band of 2^maxLevel rows would exceed it.
std::function< void(const float *, int, int, int)>	rowSink
bool	rowsOnly = false
	Stream rows without allocating or computing a size grid.
int	decimation = 1

Member Data Documentation

decimation

int mesh::TerrainSizeOptions::decimation = 1

rowsOnly only: stream a grid d times coarser (block-averaged, served from overviews when present), for feature detection that does not need full resolution. windowPixelToGeo() maps the coarse grid.

maxBandBytes

qint64 mesh::TerrainSizeOptions::maxBandBytes = 256ll * 1024 * 1024

a full-width band of 2^maxLevel rows would exceed it.

Streaming budget; lowers maxLevel when

maxLevel

int mesh::TerrainSizeOptions::maxLevel = 10

Largest block tested: 2^maxLevel pixels (1024).

outLevel

int mesh::TerrainSizeOptions::outLevel = 2

Output cell = 2^outLevel pixels. Callers pick it near the size-field pitch so the grid stays small.

rowSink

std::function<void(const float *, int, int, int)> mesh::TerrainSizeOptions::rowSink

Optional: receives every row of the window in order, after NoData → NaN, as (row, rowIndex, cols, rows). The terrain break-line extractor (MESH_OVERHAUL_PHASE6B_FEATURE_CAPTURE_2026-09-30.md §2.1) rides this pass so the DEM is read once.

rowsOnly

bool mesh::TerrainSizeOptions::rowsOnly = false

Stream rows without allocating or computing a size grid.

tolerance

double mesh::TerrainSizeOptions::tolerance = 0.0

Vertical tolerance in the DEM's units. <= 0 = no field.

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The documentation for this struct was generated from the following file:

• /home/runner/work/openswmm.gui/openswmm.gui/include/mesh/terrainsizefield.h