DtGeoidDatum Class Reference

Collaboration diagram for DtGeoidDatum:

Public Member Functions
	DtGeoidDatum (bool cubic=true, bool threadsafe=false)
	Constructor that creates a DtGeoidDatum using the global default DtGeoidType. More...
	DtGeoidDatum (DtGeoidType geoidType, bool cubic=true, bool threadsafe=false)
	Constructor that uses the specified DtGeoidType instead of the global default theGeoidDatumType. More...
	DtGeoidDatum (DtString geoidPath, bool cubic=true, bool threadsafe=false)
	Constructor that takes a path and filename to a PGM file. More...
	~DtGeoidDatum ()
void	initGeoid (DtGeoidType geoidType, DtString geoidPath, bool cubic, bool threadsafe)
	initializes the internal myGeoid variable. Prints warning if initialization is unsuccessful. More...
virtual double	undulation (double latitude, double longitude)
	returns the difference between the surface of the Geoid and the surface of the WGS84 ellipsoid. More...
virtual void	cacheArea (double south, double west, double north, double east)
	caches an area of the PGM file for quicker access. The area is a square defined by a 4 points in degrees. More...
virtual void	cacheAll ()
	caches the entire geoid PGM file. Caution: For higher resolutions this will allocate up to 500MB of memory. More...
virtual DtGeoidType	geoidType ()
virtual DtString	geoidPath ()
virtual bool	cubic ()
virtual bool	threadsafe ()

Protected Attributes
void *	myGeoid
DtGeoidType	myType
DtString	myGeoidPath
bool	myCubic
bool	myThreadSafe

Private Member Functions
DtGeoidDatum &	operator= (const DtGeoidDatum &src)
	assignment operator More...
	DtGeoidDatum (const DtGeoidDatum &src)
	copy constructor More...

Constructor & Destructor Documentation

DtGeoidDatum::DtGeoidDatum	(	bool	cubic = true,
		bool	threadsafe = false
	)

Constructor that creates a DtGeoidDatum using the global default DtGeoidType.

cubic (optional) interpolation method; false means bilinear, true (the default) means cubic. The threadsafe argument will create a threadsafe version of this object if set to true (default is false). Setting threadsafe to true caches the entire PGM file into memory. For higher resolution PGM files this can consume a large amount of memory (i.e DtEGM0801 ~ 500MB)

DtGeoidDatum::DtGeoidDatum	(	DtGeoidType	geoidType,
		bool	cubic = true,
		bool	threadsafe = false
	)

Constructor that uses the specified DtGeoidType instead of the global default theGeoidDatumType.

DtGeoidDatum::DtGeoidDatum	(	DtString	geoidPath,
		bool	cubic = true,
		bool	threadsafe = false
	)

Constructor that takes a path and filename to a PGM file.

DtGeoidDatum::~DtGeoidDatum

(

)

DtGeoidDatum::DtGeoidDatum ( const DtGeoidDatum &  src )

private

copy constructor

Member Function Documentation

virtual void DtGeoidDatum::cacheAll ( )

virtual

caches the entire geoid PGM file. Caution: For higher resolutions this will allocate up to 500MB of memory.

virtual void DtGeoidDatum::cacheArea ( double  south, double  west, double  north, double  east  )

virtual

caches an area of the PGM file for quicker access. The area is a square defined by a 4 points in degrees.

virtual bool DtGeoidDatum::cubic ( )

virtual

virtual DtString DtGeoidDatum::geoidPath ( )

virtual

virtual DtGeoidType DtGeoidDatum::geoidType ( )

virtual

void DtGeoidDatum::initGeoid	(	DtGeoidType	geoidType,
		DtString	geoidPath,
		bool	cubic,
		bool	threadsafe
	)

initializes the internal myGeoid variable. Prints warning if initialization is unsuccessful.

DtGeoidDatum& DtGeoidDatum::operator= ( const DtGeoidDatum &  src )

private

assignment operator

virtual bool DtGeoidDatum::threadsafe ( )

virtual

virtual double DtGeoidDatum::undulation ( double  latitude, double  longitude  )

virtual

returns the difference between the surface of the Geoid and the surface of the WGS84 ellipsoid.

Member Data Documentation

bool DtGeoidDatum::myCubic

protected

void* DtGeoidDatum::myGeoid

protected

DtString DtGeoidDatum::myGeoidPath

protected

bool DtGeoidDatum::myThreadSafe

protected

DtGeoidType DtGeoidDatum::myType

protected

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

• geoidDatum.h