Polygon tile indexing class for optmized geometrical relational tests. More...

#include <TileIndexer.h>

Public Types
typedef std::vector< std::pair < unsigned int, unsigned int > >	TileSegIndex

Public Member Functions
bool	addRing (const unsigned int &ri)
	Update the tile index with the information of the supplied ring. More...

void	clear ()
	Clear all internal resources. More...

const te::gm::Polygon &	getPolygon () const
	Returns the polygon. More...

bool	getTile (const double &y, TileSegIndex **index) const
	Gets tile index. More...

	TileIndexer (const te::gm::Polygon &pol, const double &dy)
	Alternative Constructor. More...

bool	within (const te::gm::Point &geometry) const
	It returns true if the given geometry is within the indexed reference polygon. More...

	~TileIndexer ()
	Destructor. More...

Protected Member Functions
bool	getTileIndex (const te::gm::Point &p1, const te::gm::Point &p2, unsigned int &firstTile, unsigned int &lastTile) const
	Gets tile index intervals in y direction for a given segment. More...

bool	getTileIndex (const double &y, unsigned int &tileIndex) const
	Gets tile index for y coordinate value. More...

void	init ()
	Init internal variables. More...

const TileIndexer &	operator= (const TileIndexer &)
	Copy overload. More...

	TileIndexer (const TileIndexer &)
	Constructor. More...

Protected Attributes
double	m_dy
	Tile resolution along "y" axis. More...

const te::gm::Polygon &	m_referencePolygon
	Reference polygon. More...

std::vector< TileSegIndex * >	m_tileIndex
	Each tile segments index vector. More...

bool	m_withinIsInside

te::gm::LinearRing const *	m_withinRingPtr

TileSegIndex *	m_withinTileIndexPtr

double	m_withinTileX

double	m_withinTileY

te::gm::Coord2D	m_withinVtx0

te::gm::Coord2D	m_withinVtx1

int	m_withinYFlag0

int	m_withinYFlag1

Detailed Description

Polygon tile indexing class for optmized geometrical relational tests.

Note: The related polygon instance must always be valid (only the polygon reference is stored internally).

Definition at line 54 of file TileIndexer.h.

Member Typedef Documentation

typedef std::vector<std::pair<unsigned int, unsigned int> > te::rst::TileIndexer::TileSegIndex

Definition at line 58 of file TileIndexer.h.

Constructor & Destructor Documentation

te::rst::TileIndexer::TileIndexer ( const TileIndexer & )

protected

Constructor.

te::rst::TileIndexer::TileIndexer	(	const te::gm::Polygon &	pol,
		const double &	dy
	)

Alternative Constructor.

Parameters

pol	The polygon to index.
dy	Tile size along "y" axis.

Definition at line 80 of file TileIndexer.cpp.

References addRing(), te::gm::Envelope::getHeight(), te::gm::Geometry::getMBR(), te::gm::CurvePolygon::getNumRings(), init(), m_dy, m_referencePolygon, m_tileIndex, and TE_TR.

te::rst::TileIndexer::~TileIndexer ( )

Destructor.

Definition at line 115 of file TileIndexer.cpp.

Member Function Documentation

bool te::rst::TileIndexer::addRing ( const unsigned int & ri )

Update the tile index with the information of the supplied ring.

Parameters

ri	The ring index.

Returns: true, if ok, false on errors.

Definition at line 120 of file TileIndexer.cpp.

Referenced by TileIndexer().

void te::rst::TileIndexer::clear ( )

Clear all internal resources.

Definition at line 108 of file TileIndexer.cpp.

References te::common::FreeContents().

const te::gm::Polygon& te::rst::TileIndexer::getPolygon ( ) const

inline

Returns the polygon.

Definition at line 127 of file TileIndexer.h.

bool te::rst::TileIndexer::getTile	(	const double &	y,
		TileSegIndex **	index
	)		const

Gets tile index.

Parameters

y	The Y value.
index	Output tile pointer.

Returns: true if ok, false on errors.

Definition at line 164 of file TileIndexer.cpp.

bool te::rst::TileIndexer::getTileIndex	(	const te::gm::Point &	p1,
		const te::gm::Point &	p2,
		unsigned int &	firstTile,
		unsigned int &	lastTile
	)		const

protected

Gets tile index intervals in y direction for a given segment.

Parameters

p1	First segment coordinate.
p2	Second segment coordinate.
firstTile	The first tile index that this segment intersects.
lastTile	The last tile index that this segment intersects.

Returns: true if ok, false on errors.

Note: The segment does NOT need to be oriented.

Definition at line 37 of file TileIndexer.cpp.

References te::gm::Envelope::getLowerLeftY(), te::gm::Geometry::getMBR(), te::gm::Envelope::getUpperRightY(), te::gm::Point::getY(), m_dy, and m_referencePolygon.

bool te::rst::TileIndexer::getTileIndex	(	const double &	y,
		unsigned int &	tileIndex
	)		const

protected

Gets tile index for y coordinate value.

Parameters

y	Value of "y" coordinate.
tileIndex	Index of corresponding tile.

Returns: true if ok, false on errors.

Definition at line 59 of file TileIndexer.cpp.

void te::rst::TileIndexer::init ( )

protected

Init internal variables.

Definition at line 75 of file TileIndexer.cpp.

Referenced by TileIndexer().

const TileIndexer& te::rst::TileIndexer::operator= ( const TileIndexer & )

protected

Copy overload.

bool te::rst::TileIndexer::within ( const te::gm::Point & geometry ) const

It returns true if the given geometry is within the indexed reference polygon.

Parameters

rhs	The other geometry to be compared.

Returns: true if the given geometry is within the indexed reference polygon.

Definition at line 180 of file TileIndexer.cpp.

References te::gm::Point::getX(), and te::gm::Point::getY().

Member Data Documentation

double te::rst::TileIndexer::m_dy

protected

Tile resolution along "y" axis.

Definition at line 142 of file TileIndexer.h.

Referenced by getTileIndex(), and TileIndexer().

const te::gm::Polygon& te::rst::TileIndexer::m_referencePolygon

protected

Reference polygon.

Definition at line 143 of file TileIndexer.h.

Referenced by getTileIndex(), and TileIndexer().

std::vector<TileSegIndex*> te::rst::TileIndexer::m_tileIndex

protected

Each tile segments index vector.

Definition at line 144 of file TileIndexer.h.

Referenced by TileIndexer().

bool te::rst::TileIndexer::m_withinIsInside

mutableprotected

Definition at line 151 of file TileIndexer.h.

te::gm::LinearRing const* te::rst::TileIndexer::m_withinRingPtr

mutableprotected

Definition at line 154 of file TileIndexer.h.

TileSegIndex* te::rst::TileIndexer::m_withinTileIndexPtr

mutableprotected

Definition at line 148 of file TileIndexer.h.

double te::rst::TileIndexer::m_withinTileX

mutableprotected

Definition at line 150 of file TileIndexer.h.

double te::rst::TileIndexer::m_withinTileY

mutableprotected

Definition at line 149 of file TileIndexer.h.

te::gm::Coord2D te::rst::TileIndexer::m_withinVtx0

mutableprotected

Definition at line 155 of file TileIndexer.h.

te::gm::Coord2D te::rst::TileIndexer::m_withinVtx1

mutableprotected

Definition at line 156 of file TileIndexer.h.

int te::rst::TileIndexer::m_withinYFlag0

mutableprotected

Definition at line 152 of file TileIndexer.h.

int te::rst::TileIndexer::m_withinYFlag1

mutableprotected

Definition at line 153 of file TileIndexer.h.

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

C:/TL5_2015_release/terralib5/src/terralib/raster/TileIndexer.h
C:/TL5_2015_release/terralib5/src/terralib/raster/TileIndexer.cpp

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation