Extinction Class Reference

List of all members.

Public Member Functions
void	forward (const Vec3d *altAzPos, float *mag, const int num) const
void	forward (const Vec3f *altAzPos, float *mag, const int num) const
void	forward (const double *sinAlt, float *mag, const int num) const
void	forward (const float *sinAlt, float *mag, const int num) const
void	backward (const Vec3d *altAzPos, float *mag, const int num) const
void	backward (const Vec3f *altAzPos, float *mag, const int num) const
void	backward (const double *sinAlt, float *mag, const int num) const
void	backward (const float *sinAlt, float *mag, const int num) const
void	setExtinctionCoefficient (float k)
float	getExtinctionCoefficient () const

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Member Function Documentation

void Extinction::backward	(	const Vec3d *	altAzPos,
		float *	mag,
		const int	num
	)		const

Compute extinction effect for arrays of size.

Parameters:

size	position vectors and magnitudes.
altAzPos	are the normalized (apparent) star position vectors, and their z components sin(apparent_altitude). Note that forward/backward are no absolute reverse operations!

void Extinction::forward	(	const Vec3d *	altAzPos,
		float *	mag,
		const int	num
	)		const

Compute extinction effect for arrays of size.

Parameters:

num	position vectors and magnitudes.
altAzPos	are the normalized (apparent) star position vectors, and their z components sin(apparent_altitude). This call must therefore be done after application of Refraction, and only if atmospheric effects are on. Note that forward/backward are no absolute reverse operations!

void Extinction::setExtinctionCoefficient

(

float

k

)

[inline]

Set visual extinction coefficient (mag/airmass), influences extinction computation.

Parameters:

k=	0.1 for highest mountains, 0.2 for very good lowland locations, 0.35 for typical lowland, 0.5 in humid climates.