lost::PairDistanceKVectorDatabase Class Reference

A database storing distances between pairs of stars. More...

#include <databases.hpp>

Public Member Functions
	PairDistanceKVectorDatabase (DeserializeContext *des)
	Create the database from a serialized buffer.
const int16_t *	FindPairsLiberal (decimal min, decimal max, const int16_t **end) const
	Return at least all the star pairs whose inter-star distance is between min and max.
const int16_t *	FindPairsExact (const Catalog &, decimal min, decimal max, const int16_t **end) const
std::vector< decimal >	StarDistances (int16_t star, const Catalog &) const
	Return the distances from the given star to each star it's paired with in the database (for debugging).
decimal	MaxDistance () const
	Upper bound on stored star pair distances.
decimal	MinDistance () const
	Lower bound on stored star pair distances.
long	NumPairs () const
	Exact number of stored pairs.

Static Public Attributes
static const int32_t	kMagicValue = 0x2536f009
	Magic value to use when storing inside a MultiDatabase.

Detailed Description

A database storing distances between pairs of stars.

Supports fast range queries to find all pairs of stars separated by approximately a certain distance.

Warning

Sensitive to uncalibrated camera parameters

Definition at line 54 of file databases.hpp.

Constructor & Destructor Documentation

PairDistanceKVectorDatabase()

lost::PairDistanceKVectorDatabase::PairDistanceKVectorDatabase ( DeserializeContext *  des )

explicit

Create the database from a serialized buffer.

Definition at line 221 of file databases.cpp.

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Member Function Documentation

FindPairsExact()

const int16_t * lost::PairDistanceKVectorDatabase::FindPairsExact	(	const Catalog &	catalog,
		decimal	min,
		decimal	max,
		const int16_t **	end
	)		const

Definition at line 248 of file databases.cpp.

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FindPairsLiberal()

const int16_t * lost::PairDistanceKVectorDatabase::FindPairsLiberal	(	decimal	minQueryDistance,
		decimal	maxQueryDistance,
		const int16_t **	end
	)		const

Return at least all the star pairs whose inter-star distance is between min and max.

Parameters

end[out]

Is set to an "off-the-end" pointer, one past the last pair being returned by the query.

Returns

A pointer to the start of the matched pairs. Each pair is stored as simply two 16-bit integers, each of which is a catalog index. (you must increment the pointer twice to get to the next pair).

Definition at line 237 of file databases.cpp.

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MaxDistance()

decimal lost::PairDistanceKVectorDatabase::MaxDistance ( ) const

inline

Upper bound on stored star pair distances.

Definition at line 63 of file databases.hpp.

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MinDistance()

decimal lost::PairDistanceKVectorDatabase::MinDistance ( ) const

inline

Lower bound on stored star pair distances.

Definition at line 65 of file databases.hpp.

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NumPairs()

long lost::PairDistanceKVectorDatabase::NumPairs

(

)

const

Exact number of stored pairs.

Number of star pairs stored in the database.

Definition at line 282 of file databases.cpp.

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StarDistances()

std::vector< decimal > lost::PairDistanceKVectorDatabase::StarDistances	(	int16_t	star,
		const Catalog &	catalog
	)		const

Return the distances from the given star to each star it's paired with in the database (for debugging).

Definition at line 287 of file databases.cpp.

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Member Data Documentation

kMagicValue

const int32_t lost::PairDistanceKVectorDatabase::kMagicValue = 0x2536f009

static

Magic value to use when storing inside a MultiDatabase.

Definition at line 70 of file databases.hpp.

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

• src/databases.hpp
• src/databases.cpp