SHPFileHelper Namespace Reference

Functions
bool	_validateSHPFiles (const QString &shpFile, int *utmZone, bool *utmSouthernHemisphere, QString &errorString)
SHPHandle	_loadShape (const QString &shpFile, int *utmZone, bool *utmSouthernHemisphere, QString &errorString)
ShapeFileHelper::ShapeType	determineShapeType (const QString &file, QString &errorString)
int	getEntityCount (const QString &shpFile, QString &errorString)
	Get the number of entities in the shapefile.
bool	loadPolygonsFromFile (const QString &shpFile, QList< QList< QGeoCoordinate > > &polygons, QString &errorString, double filterMeters=ShapeFileHelper::kDefaultVertexFilterMeters)
bool	loadPolylinesFromFile (const QString &shpFile, QList< QList< QGeoCoordinate > > &polylines, QString &errorString, double filterMeters=ShapeFileHelper::kDefaultVertexFilterMeters)
bool	loadPointsFromFile (const QString &shpFile, QList< QGeoCoordinate > &points, QString &errorString)
	Load all point entities.

Function Documentation

_loadShape()

SHPHandle SHPFileHelper::_loadShape	(	const QString &	shpFile,
		int *	utmZone,
		bool *	utmSouthernHemisphere,
		QString &	errorString
	)

Parameters

utmZone[out]	Zone for UTM shape, 0 for lat/lon shape
utmSouthernHemisphere[out]	true/false for UTM hemisphere

Definition at line 219 of file SHPFileHelper.cc.

References _validateSHPFiles(), and errorString.

Referenced by determineShapeType(), getEntityCount(), loadPointsFromFile(), loadPolygonsFromFile(), and loadPolylinesFromFile().

_validateSHPFiles()

bool SHPFileHelper::_validateSHPFiles	(	const QString &	shpFile,
		int *	utmZone,
		bool *	utmSouthernHemisphere,
		QString &	errorString
	)

Validates the specified SHP file is truly a SHP file and is in the format we understand.

Parameters

utmZone[out]	Zone for UTM shape, 0 for lat/lon shape
utmSouthernHemisphere[out]	true/false for UTM hemisphere

Returns

true: Valid supported SHP file found, false: Invalid or unsupported file found

Definition at line 154 of file SHPFileHelper.cc.

References errorString.

Referenced by _loadShape().

determineShapeType()

ShapeFileHelper::ShapeType SHPFileHelper::determineShapeType	(	const QString &	file,
		QString &	errorString
	)

Definition at line 239 of file SHPFileHelper.cc.

References _loadShape(), and errorString.

getEntityCount()

int SHPFileHelper::getEntityCount	(	const QString &	shpFile,
		QString &	errorString
	)

Get the number of entities in the shapefile.

Definition at line 276 of file SHPFileHelper.cc.

References _loadShape(), and errorString.

loadPointsFromFile()

bool SHPFileHelper::loadPointsFromFile	(	const QString &	shpFile,
		QList< QGeoCoordinate > &	points,
		QString &	errorString
	)

Load all point entities.

Definition at line 500 of file SHPFileHelper.cc.

References _loadShape(), QGCGeo::convertUTMToGeo(), and errorString.

loadPolygonsFromFile()

bool SHPFileHelper::loadPolygonsFromFile	(	const QString &	shpFile,
		QList< QList< QGeoCoordinate > > &	polygons,
		QString &	errorString,
		double	filterMeters = ShapeFileHelper::kDefaultVertexFilterMeters
	)

Load all polygon entities

Parameters

filterMeters

Filter vertices closer than this distance (0 to disable)

Definition at line 294 of file SHPFileHelper.cc.

References _loadShape(), QGCGeo::convertUTMToGeo(), and errorString.

loadPolylinesFromFile()

bool SHPFileHelper::loadPolylinesFromFile	(	const QString &	shpFile,
		QList< QList< QGeoCoordinate > > &	polylines,
		QString &	errorString,
		double	filterMeters = ShapeFileHelper::kDefaultVertexFilterMeters
	)

Load all polyline entities

Parameters

filterMeters

Filter vertices closer than this distance (0 to disable)

Definition at line 407 of file SHPFileHelper.cc.

References _loadShape(), QGCGeo::convertUTMToGeo(), and errorString.