te::rst::TileIndexer Class Reference

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
void	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...
void	getTile (const double &y, TileSegIndex **index) const
	Gets tile index. More...
	TileIndexer (const te::gm::Polygon &pol, const double &dy)
	Alternative Constructor. More...
	~TileIndexer ()
	Destructor. More...

Protected Member Functions
void	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...
void	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...

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 55 of file TileIndexer.h.

Member Typedef Documentation

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

Definition at line 59 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 59 of file TileIndexer.cpp.

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

te::rst::TileIndexer::~TileIndexer

(

)

Destructor.

Definition at line 89 of file TileIndexer.cpp.

Member Function Documentation

void te::rst::TileIndexer::addRing

(

const unsigned int &

ri

)

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

Parameters

ri	The ring index.

Definition at line 94 of file TileIndexer.cpp.

Referenced by te::rst::Vectorizer::run(), and TileIndexer().

void te::rst::TileIndexer::clear

(

)

Clear all internal resources.

Definition at line 82 of file TileIndexer.cpp.

References te::common::FreeContents().

Referenced by te::rst::Vectorizer::run().

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

(

)

const

Returns the polygon.

Definition at line 138 of file TileIndexer.cpp.

Referenced by te::rst::Vectorizer::run().

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

Gets tile index.

Parameters

y	The Y value.
index	Output tile pointer (NULL if not found).

Definition at line 127 of file TileIndexer.cpp.

void 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.

Note

The segment does NOT need to be oriented.

Definition at line 34 of file TileIndexer.cpp.

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

void 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.

Definition at line 47 of file TileIndexer.cpp.

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

protected

Init internal variables.

Definition at line 54 of file TileIndexer.cpp.

Referenced by TileIndexer().

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

protected

Copy overload.

Member Data Documentation

double te::rst::TileIndexer::m_dy

protected

Tile resolution along "y" axis.

Definition at line 127 of file TileIndexer.h.

Referenced by getTileIndex(), and TileIndexer().

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

protected

Reference polygon.

Definition at line 128 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 129 of file TileIndexer.h.

Referenced by TileIndexer().

---

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

• C:/BB_TL5/terralib5/src/terralib/raster/TileIndexer.h
• C:/BB_TL5/terralib5/src/terralib/raster/TileIndexer.cpp