Helper functions for coordinate conversion operations. More...

Functions
double	GetAltitude (const dv3 &pointEcef)

v3	LocalEcefToZeroAltitudeLocalEcef (const v3 &localEcef, const dv3 &ecefCellOrigin)

double	GreatCircleDistance (const LatLong &a, const LatLong &b, double sphereRadius)

void	LatLongBounds (const LatLong &p, double greatCircleRadius, double sphereRadius, LatLong &out_min, LatLong &out_max)

double	PrincipleAngleImpl (const double angle, const double halfRotation)

double	PrincipleAngle (double angleRadians)

double	PrincipleAngleDegrees (double angleDegrees)

double	AngleDifferenceImpl (double a, double b, double halfRotation)

double	AngleDifferenceRadians (double radiansA, double radiansB)

double	AngleDifferenceDegrees (double degreesA, double degreesB)

void	LatLongBoundsFromPoints (const std::vector< LatLong > &points, LatLong &out_southwest, LatLong &out_northeast)

void	InflatedLatLongBounds (const LatLong &southwest, const LatLong &northeast, const double inflatePercent, LatLong &out_southwest, LatLong &out_northeast)

double	GetLongitudeIntervalZeroTwoPi (const double a, const double b)

bool	LatLongBoundsIntersect (const Space::LatLong &southWestA, const Space::LatLong &northEastA, const Space::LatLong &southWestB, const Space::LatLong &northEastB)

std::vector< Streaming::MortonKey >	CalculateMortonKeysIntersectingBounds (const int keyDepth, const Space::LatLong &southWestLatLong, const Space::LatLong &northEastLatLong)

bool	IsEcefPointBehindGlobeHorizon (const dv3 &pointEcef, const dv3 &viewLocationEcef)

Eegeo::Geometry::Ray	LatLongToVerticallyDownRay (const Space::LatLong &point)

dv3	DirectionFromHeadingDegreesAtPoint (double headingDegrees, const dv3 &pointEcef)

double	HeadingDegreesFromDirectionAtPoint (const dv3 &directionEcef, const dv3 &pointEcef)

double	AngleDifference (double radiansA, double radiansB)

Detailed Description

Helper functions for coordinate conversion operations.

Function Documentation

double Eegeo::Space::SpaceHelpers::AngleDifference	(	double	radiansA,
		double	radiansB
	)

Calculate the smallest signed angle between two phasors on a circle (for example bearing angles).

Parameters

radiansA	Input angle A in radians
radiansB	Input angle B in radians

Returns: the difference B - A, expressed in range R[-pi <= x < pi]

double Eegeo::Space::SpaceHelpers::AngleDifferenceDegrees	(	double	degreesA,
		double	degreesB
	)

Calculate the smallest signed angle between two phasors on a circle (for example bearing angles).

Parameters

degreesA	Input angle A in degrees
degreesB	Input angle B in degrees

Returns: the difference B - A, expressed in R[-180 <= x < 180]

double Eegeo::Space::SpaceHelpers::GetAltitude ( const dv3 & pointEcef )

Calculate the altitude above sea level, in metres, of an ECEF point

Parameters

pointEcef point in ECEF coordinates

Returns: height above sea level in metres

double Eegeo::Space::SpaceHelpers::PrincipleAngle ( double angleRadians )

Calculate an angle suitable for expressing a bearing or longitude coordinate in a normalised manner.

Parameters

angleRadians Input angle in radians

Returns: angleRadians expressed in range R[-pi <= x < pi]

double Eegeo::Space::SpaceHelpers::PrincipleAngleDegrees ( double angleDegrees )

Calculate an angle suitable for expressing a bearing or longitude in a normalised manner.

Parameters

angleDegrees Input angle in degrees

Returns: angleDegrees expressed in range R[-180 <= x < 180]

Functions

Detailed Description

Function Documentation