An abstract class to decode raster data. More...

#include <TeDecoder.h>

Inheritance diagram for TeDecoder:

Public Member Functions
	TeDecoder ()
	Empty constructor.
	TeDecoder (const TeRasterParams &par)
	Constructor from raster parameters.
virtual	~TeDecoder ()
	Virtual destructor.
TeRasterParams &	params ()
	Returns the raster parameters.
void	updateParams (TeRasterParams &par)
	Updates the raster parameters.
virtual bool	setElement (int col, int lin, double val, int band=0)=0
	Sets the value of a specific raster element.
virtual bool	setElementRGB (int col, int lin, double Rval, double Gval, double Bval, unsigned int=255)
	An optimizated method to set values raster images.
virtual bool	getElement (int col, int lin, double &val, int band=0)=0
	Gets an specific element (col, lin, band) of a raster data.
virtual TeCoord2D	coord2Index (const TeCoord2D &pt)
	Transforms a geographical coordinate to an index (lin, col) coordinate.
virtual TeCoord2D	index2Coord (const TeCoord2D &pt)
	Transforms an index (lin, col) coordinate to a geographical coordinate.
virtual void	init (TeRasterParams &par)
	Initializes the internal structures of the decoder from a raster parameters structure.
virtual void	init ()=0
	Initializes the internal structures of the decoder.
virtual bool	clear ()=0
	Clears its internal structures.
Selection
These routines are used to implement a selection of blocks or tiles that intercept a given bounding box, and provide sequential access to them. These routines should be implemented by concrete decoders to formats that support tilling.
virtual bool	selectBlocks (TeBox &, int, TeRasterParams &)
	Returns TRUE if it there are raster blocks that intersect a given box.
virtual int	numberOfSelectedBlocks ()
	Returns the number of blocks selected in the last block selection.
virtual bool	getSelectedRasterBlock (TeDecoderMemory *)
	Gets a decoder to the current selected block.
virtual void	clearBlockSelection ()
	Clear a previous block selection.
virtual int	bestResolution (TeBox &, int, int, TeProjection *)
	Returns the raster best resolution level available to fill a given bounding box with a given number of lines and columns in a given projection.
virtual int	bestResolution (double)
	Returns the raster resolution level available that is more similiar to a given desired resolution.
Static Public Member Functions
static TeDecoder *	DefaultObject (const TeRasterParams &par)
	Returns a default object - for compatibility reasons with TeDecoderFactory.
Protected Attributes
TeRasterParams	params_
	The parameters that describes a raster data.

Detailed Description

An abstract class to decode raster data.

Constructor & Destructor Documentation

TeDecoder::TeDecoder ( )

Empty constructor.

TeDecoder::TeDecoder ( const TeRasterParams & par )

Constructor from raster parameters.

Parameters:

par	raster parameters

TeDecoder::~TeDecoder ( ) [virtual]

Virtual destructor.

Member Function Documentation

int TeDecoder::bestResolution	(	TeBox &	,
		int	,
		int	,
		TeProjection *
	)		`[virtual]`

Returns the raster best resolution level available to fill a given bounding box with a given number of lines and columns in a given projection.

Reimplemented in TeDecoderMrSID, and TeDecoderDatabase.

int TeDecoder::bestResolution ( double ) [virtual]

Returns the raster resolution level available that is more similiar to a given desired resolution.

Reimplemented in TeDecoderMrSID.

virtual bool TeDecoder::clear ( ) [pure virtual]

Clears its internal structures.

Implemented in TeGDALDecoder, TeDecoderMrSID, TeDecoderQtImage, TeDecoderASCIIGrid, TeDecoderDatabase, TeDecoderJPEG, TeDecoderMemory, TeDecoderMemoryMap, TeDecoderSmartMem, TeDecoderSPR, TeDecoderTIFF, and TeDecoderVirtualMemory.

void TeDecoder::clearBlockSelection ( ) [virtual]

Clear a previous block selection.

Reimplemented in TeDecoderMrSID, and TeDecoderDatabase.

TeCoord2D TeDecoder::coord2Index ( const TeCoord2D & pt ) [virtual]

Transforms a geographical coordinate to an index (lin, col) coordinate.

TeDecoder * TeDecoder::DefaultObject ( const TeRasterParams & par ) [static]

Returns a default object - for compatibility reasons with TeDecoderFactory.

virtual bool TeDecoder::getElement	(	int	col,
		int	lin,
		double &	val,
		int	band = `0`
	)		`[pure virtual]`

Gets an specific element (col, lin, band) of a raster data.

Parameters:

col	element column identifier
lin	element line identifier
val	element value being retrieved
band	element band identifier

Implemented in TeDecoderMrSID, TeDecoderQtImage, TeDecoderASCIIGrid, TeDecoderJPEG, TeDecoderMemory, TeDecoderMemoryMap, TeDecoderSmartMem, TeDecoderTIFF, and TeDecoderVirtualMemory.

bool TeDecoder::getSelectedRasterBlock ( TeDecoderMemory * ) [virtual]

Gets a decoder to the current selected block.

Reimplemented in TeDecoderMrSID, and TeDecoderDatabase.

TeCoord2D TeDecoder::index2Coord ( const TeCoord2D & pt ) [virtual]

Transforms an index (lin, col) coordinate to a geographical coordinate.

virtual void TeDecoder::init ( ) [pure virtual]

Initializes the internal structures of the decoder.

Implemented in TeGDALDecoder, TeDecoderMrSID, TeDecoderPAM, TeDecoderQtImage, TeDecoderASCIIGrid, TeDecoderDatabase, TeDecoderJPEG, TeDecoderMemory, TeDecoderMemoryMap, TeDecoderSmartMem, TeDecoderSPR, TeDecoderTIFF, and TeDecoderVirtualMemory.

void TeDecoder::init ( TeRasterParams & par ) [virtual]

Initializes the internal structures of the decoder from a raster parameters structure.

int TeDecoder::numberOfSelectedBlocks ( ) [virtual]

Returns the number of blocks selected in the last block selection.

Reimplemented in TeDecoderMrSID, and TeDecoderDatabase.

TeRasterParams & TeDecoder::params ( )

Returns the raster parameters.

bool TeDecoder::selectBlocks	(	TeBox &	,
		int	,
		TeRasterParams &
	)		`[virtual]`

Returns TRUE if it there are raster blocks that intersect a given box.

Reimplemented in TeDecoderMrSID, and TeDecoderDatabase.

virtual bool TeDecoder::setElement	(	int	col,
		int	lin,
		double	val,
		int	band = `0`
	)		`[pure virtual]`

Sets the value of a specific raster element.

Parameters:

col	element column identifier
lin	element line identifier
val	element value being inserted
band	element band identifier

Implemented in TeGDALDecoder, TeDecoderMrSID, TeDecoderQtImage, TeDecoderASCIIGrid, TeDecoderJPEG, TeDecoderMemory, TeDecoderMemoryMap, TeDecoderSmartMem, TeDecoderSPR, TeDecoderTIFF, and TeDecoderVirtualMemory.

bool TeDecoder::setElementRGB	(	int	col,
		int	lin,
		double	Rval,
		double	Gval,
		double	Bval,
		unsigned	int = `255`
	)		`[virtual]`

An optimizated method to set values raster images.

Reimplemented in TeDecoderQtImage.

void TeDecoder::updateParams ( TeRasterParams & par )

Updates the raster parameters.

Member Data Documentation

TeRasterParams TeDecoder::params_ [protected]

The parameters that describes a raster data.

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

E:/Projetos_Primeiro_Semestre_2012/TerraView/terralib/src/terralib/kernel/TeDecoder.h
E:/Projetos_Primeiro_Semestre_2012/TerraView/terralib/src/terralib/kernel/TeDecoder.cpp

Public Member Functions

Static Public Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation