SPATREF::ELLIPSOID Class Reference

Ellipsoid specification. More...

#include <mi32/spatref.h>

List of all members.

Public Types
enum	FORM { FORM_Undefined = 0, FORM_Sphere = 1, FORM_SemiMinorAxis = 2, FORM_InverseFlattening = 3 }
enum	IDNUM {   IDNUM_Undefined = -1, IDNUM_UnitSphere = 1300, IDNUM_Clarke_1866 = 1302, IDNUM_GRS_1980 = 1301,   IDNUM_WGS_1984 = 1351 }
Public Member Functions
	ELLIPSOID (const ELLIPSOID &rhs)
	ELLIPSOID ()
	~ELLIPSOID ()
ERRVALUE	Assign (IDNUM IdNum)
ERRVALUE	Assign (const IDENTIFIER &Id)
ERRVALUE	ComputeDistance (const DPOINT2D &point1, const DPOINT2D &point2, double &distance, const UOM::UNIT &PointUnit, const UOM::UNIT &LengthUnit) const
double	ComputeEccentricity () const
double	ComputeFlattening () const
ERRVALUE	ComputeLength (const POLYLINE &polyline, double &length, const UOM::UNIT &PointUnit, const UOM::UNIT &LengthUnit) const
void	ComputeLinearScale (double GeodeticLatitude, DPOINT2D &scale, const UOM::UNIT &LatitudeUnit, const UOM::UNIT &LinearUnit) const
void	ComputeLinearScale (double GeodeticLatitude, DPOINT2D &scale, UOM::IDNUM LatitudeUnitIdNum=UOM::IDNUM_PlaneAngle_Degree, UOM::IDNUM LinearUnitIdNum=UOM::IDNUM_Length_Meter) const
void	GetDisplay (MISTRING &string, int indent, GETDISPLAY flags=GETDISPLAY_None) const
FORM	GetForm () const
const IDENTIFIERLIST &	GetIdList () const
IDNUM	GetIdNum () const
double	GetInverseFlattening () const
const MISTRING &	GetName () const
double	GetSemiMajorAxis () const
double	GetSemiMinorAxis () const
ELLIPSOID &	operator= (const ELLIPSOID &rhs)
Static Public Member Functions
static IDNUM	LookupIdNum (double SemiMajorAxis, double SemiMinorAxis, double InverseFlattening=0)

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Detailed Description

Ellipsoid specification.

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Member Enumeration Documentation

enum SPATREF::ELLIPSOID::FORM

Ellipsoid definition form.

Enumerator:

FORM_Undefined
FORM_Sphere	Defined as sphere, semi-minor axis equal to semi-major.
FORM_SemiMinorAxis	Defined using value for semi-minor axis.
FORM_InverseFlattening	Defined using inverse flattening.

enum SPATREF::ELLIPSOID::IDNUM

Ellipsoid ID numbers.

Note, not all IDs in database are listed.

Enumerator:

IDNUM_Undefined
IDNUM_UnitSphere
IDNUM_Clarke_1866
IDNUM_GRS_1980
IDNUM_WGS_1984

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Constructor & Destructor Documentation

SPATREF::ELLIPSOID::ELLIPSOID

(

)

Default constructor.

SPATREF::ELLIPSOID::ELLIPSOID

(

const ELLIPSOID &

rhs

)

Copy constructor.

SPATREF::ELLIPSOID::~ELLIPSOID

(

)

Destructor.

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Member Function Documentation

ERRVALUE SPATREF::ELLIPSOID::Assign

(

IDNUM

IdNum

)

Assign by MicroImages ID number.

ERRVALUE SPATREF::ELLIPSOID::Assign

(

const IDENTIFIER &

Id

)

Assign by IDENTIFIER.

ERRVALUE SPATREF::ELLIPSOID::ComputeDistance	(	const DPOINT2D &	point1,
		const DPOINT2D &	point2,
		double &	distance,
		const UOM::UNIT &	PointUnit,
		const UOM::UNIT &	LengthUnit
	)			const

Compute geodesic distance over ellipsoid between specified points.

double SPATREF::ELLIPSOID::ComputeEccentricity

(

)

const

Compute eccentricity.

Returns:

Eccentricity.

double SPATREF::ELLIPSOID::ComputeFlattening

(

)

const

Compute flattening.

Returns:

Flattening, 0 if sphere.

ERRVALUE SPATREF::ELLIPSOID::ComputeLength	(	const POLYLINE &	polyline,
		double &	length,
		const UOM::UNIT &	PointUnit,
		const UOM::UNIT &	LengthUnit
	)			const

Compute geodesic length over ellipsoid for polyline.

void SPATREF::ELLIPSOID::ComputeLinearScale	(	double	GeodeticLatitude,
		DPOINT2D &	scale,
		const UOM::UNIT &	LatitudeUnit,
		const UOM::UNIT &	LinearUnit
	)			const

Compute scale from angular to linear units at specified latitude.

Parameters:

	GeodeticLatitude	Latitude at which to compute scale
	scale	Scale from angular to linear unit on ellipsoid returned
	LatitudeUnit	Unit for latitude
	LinearUnit	Linear unit

void SPATREF::ELLIPSOID::ComputeLinearScale	(	double	GeodeticLatitude,
		DPOINT2D &	scale,
		UOM::IDNUM	LatitudeUnitIdNum = UOM::IDNUM_PlaneAngle_Degree,
		UOM::IDNUM	LinearUnitIdNum = UOM::IDNUM_Length_Meter
	)			const

Compute scale from angular to linear units at specified latitude.

Parameters:

	GeodeticLatitude	Latitude at which to compute scale
	scale	Scale from angular to linear unit on ellipsoid returned

void SPATREF::ELLIPSOID::GetDisplay	(	MISTRING &	string,
		int	indent,
		GETDISPLAY	flags = GETDISPLAY_None
	)			const

Get multiline string suitable for display.

Parameters:

	string	String returned, will be initially cleared if indent is 0
	indent	Indent level
	flags	Flags for extra items to display

FORM SPATREF::ELLIPSOID::GetForm

(

)

const

Get ellipsoid definition form.

const IDENTIFIERLIST& SPATREF::ELLIPSOID::GetIdList

(

)

const

Get identifer list.

IDNUM SPATREF::ELLIPSOID::GetIdNum

(

)

const

Get MicroImages identification number.

double SPATREF::ELLIPSOID::GetInverseFlattening

(

)

const

Get inverse flatting value.

Returns:

Inverse flattening, infinity if sphere.

const MISTRING& SPATREF::ELLIPSOID::GetName

(

)

const

Get name.

double SPATREF::ELLIPSOID::GetSemiMajorAxis

(

)

const

Get semi-major axis in meters.

double SPATREF::ELLIPSOID::GetSemiMinorAxis

(

)

const

Get semi-minor axis in meters.

static IDNUM SPATREF::ELLIPSOID::LookupIdNum	(	double	SemiMajorAxis,
		double	SemiMinorAxis,
		double	InverseFlattening = 0
	)			[static]

Lookup IDNUM using axis values.

Parameters:

	SemiMajorAxis	Semi-major axis (meters)
	SemiMinorAxis	Semi-minor axis (meters), 0 to use InverseFlattening
	InverseFlattening	Inverse flattening, 0 to use semi-minor axis

ELLIPSOID& SPATREF::ELLIPSOID::operator=

(

const ELLIPSOID &

rhs

)

Assignment.

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

• mi32/spatref.h