jafar::lgl::VisibilityMap Class Reference

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Detailed Description

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Definition of VisibleAreaClass

Contain the visibility map ( matrix of visible Area).

Definition at line 113 of file VisibilityMap.hpp.

#include <VisibilityMap.hpp>

List of all members.

Public Member Functions
	VisibilityMap ()
	Constructor.
	VisibilityMap (GeoData *_pt_Geodata=NULL, int _viewLength=DEFAULT_VIEW_LENGTH, double _sensorsHeight=DEFAULT_SENSORS_HEIGHT, int _maxHeight=DEFAULT_MAX_HEIGHT)
	}}}
	~VisibilityMap ()
	Destructor.
bool	computeWholeVisibility ()
	Compute the visibility relationships for the current Geodata Visibility is computed for the whole map.
bool	clearVisibility ()
	Clear the memory (especially the visibilityMap)
bool	computePartialVisibility (std::map< Cell_ID, VisibleArea > &partialVisibilityMap, const std::set< Cell_ID > &cellSet)
	Compute the visibility relationships for the current Geodata Visibility is computed for a part of the map, given as argument (set of Cell_ID) and return the result within the std::map given as argument.
bool	computeVisibilityOnDemand (std::map< Cell_ID, VisibleArea > &partialVisibilityMap, const std::set< Cell_ID > &cellSet)
	Similar to "computePartialVisibility", except that it avoids redundancy in computation : it keeps in memory all what have been already computed.
bool	computeVisibilityOnDemand (std::map< Cell_ID, const VisibleArea * > &partialVisibilityMap, const std::set< Cell_ID > &cellSet)
VisibleArea	getVisibility (int i, int j) const
	Get functions.
const VisibleArea *	getPtVisibility (int i, int j) const
const VisibleArea *	getPtVisibilityOnDemand (Cell_ID cell)
bool	getPrecomputedVisibility (std::map< Cell_ID, VisibleArea > &partialVisibilityMap, const std::set< Cell_ID > &cellSet)
bool	getPrecomputedVisibility (std::map< Cell_ID, const VisibleArea * > &partialVisibilityMap, const std::set< Cell_ID > &cellSet)
bool	isVisible (const Cell_ID cell) const
int	getxsize () const
int	getysize () const
int	getviewLength () const
int	getn () const
double	getalpha () const
Private Member Functions
void	computePattern ()
	Compute the exploration pattern used to compute visibility, based on the given viewLength)
void	findVisibleCells (const int i, const int j, std::vector< RasterCellIndex > &cellList, std::vector< double > &raysRatio)
	Find the cells which are visible from (i,j) in geodata (especially the VisibilityBand)
PatternPoint	computeCurrentPoint (const int i, const int j)
	find the attributes of the pattern point (+i,+j) for the rays step alpha
double	computeAngle (const int i, const int j)
	Compute the angle of a given point.
double	computeDistance (const int i1, const int j1, const int i2, const int j2, const int i3, const int j3, const double a3, const int r)
	Compute the distance between (0,0) and the intersection of a given ray (r, alpha) and a cell (i1,j1,i2,j2,i3,j3) ; use while computing the pattern.
bool	findIntersection (double &x, double &y, const int i1, const int j1, const int i2, const int j2, const double angle)
	find the intersection (x,y) of a segment (i1,j1,i2,j2) and a half-line (angle)
Private Attributes
GeoData *	pt_Geodata
	{{{
int	viewLength
double	sensorsHeight
int	maxHeight
unsigned long int	xsize
unsigned long int	ysize
std::vector< VisibleArea >	visibilityMap
std::vector< PatternPoint >	currentPattern
std::vector< std::pair< bool, VisibleArea > >	od_visibilityMap
int	n
double	alpha

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Constructor & Destructor Documentation

jafar::lgl::VisibilityMap::VisibilityMap

(

)

[inline]

Constructor.

{{{

Definition at line 184 of file VisibilityMap.hpp.

jafar::lgl::VisibilityMap::VisibilityMap	(	GeoData *	_pt_Geodata = NULL,
		int	_viewLength = DEFAULT_VIEW_LENGTH,
		double	_sensorsHeight = DEFAULT_SENSORS_HEIGHT,
		int	_maxHeight = DEFAULT_MAX_HEIGHT
	)

}}}

Constructor

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Member Function Documentation

bool jafar::lgl::VisibilityMap::computePartialVisibility	(	std::map< Cell_ID, VisibleArea > &	partialVisibilityMap,
		const std::set< Cell_ID > &	cellSet
	)

Compute the visibility relationships for the current Geodata Visibility is computed for a part of the map, given as argument (set of Cell_ID) and return the result within the std::map given as argument.

NB: it will first clear the std::map and then add content...

void jafar::lgl::VisibilityMap::computePattern

(

)

[private]

Compute the exploration pattern used to compute visibility, based on the given viewLength)

the pattern consists of a list of PatternPoints. n is the number of rays.

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

• modules/lgl/include/lgl/VisibilityMap.hpp