IlvDTEDReader Class Reference

This class can be used to read DTED files. More...

#include <ilviews/maps/format/dted/dtedreader.h>

Inheritance diagram for IlvDTEDReader:

Public Member Functions
	IlvDTEDReader (const char *filename)
	Initializes a new instance of the DTED reader for a specified file name. More...
	IlvDTEDReader (std::istream &input)
	Initializes a new instance of the DTED reader from an input stream. More...
	IlvDTEDReader (IlIUrlStream &input)
	Initializes a new instance of the DTED reader from a IlIUrlStream. More...
IlvFeatureRenderer *	getDefaultFeatureRenderer (IlvDisplay *display)
	Returns an instance of IlvDefaultFeatureRenderer. More...
virtual IlvMapsError	getInitStatus () const
	Checks the initialization status of this feature iterator. More...
virtual IlBoolean	getLowerRightCorner (IlvCoordinate &) const
	Computes the lower right corner of the rectangle containing all the map features of this iterator. More...
virtual const IlvMapFeature *	getNextFeature (IlvMapsError &)
	Returns the next map feature of the iterator. More...
const IlvProjection *	getProjection () const
	Returns the projection used in the DTED file. More...
virtual IlBoolean	getUpperLeftCorner (IlvCoordinate &) const
	Computes the upper left corner of the rectangle containing all the map features of this iterator. More...
Public Member Functions inherited from IlvMapFeatureIterator
virtual IlvClassInfo *	getClassInfo () const =0
	Returns the class information for this feature iterator. More...
virtual void	setSourceProjection (IlvProjection *projection)
	Sets the projection of geometries generated by this feature iterator. More...

Additional Inherited Members
Static Public Member Functions inherited from IlvMapFeatureIterator
static IlvClassInfo *	ClassInfo ()
	Returns the class information of the class. More...
static IlvClassInfo **	ClassInfoRef ()
	Returns the address of the class information of the class. More...

Detailed Description

This class can be used to read DTED files.

Library: ilvmaps
The Digital Terrain Elevation Data (DTED) format is a map format for representing terrain elevations, which is published by the US National Imagery and Mapping Agency (NIMA).

This reader produces only one map feature which is an IlvMapRaster.

The DTED reader provided in this package is based on the specification document MIL-PRF-89020A of 19 April 1996.

DTED files are available with various precision levels: DTED0, DTED1 and DTED2, with DTED2 offering the greatest precision.

Samples of DTED files can be downloaded from the Geospatial Engine.

Constructor & Destructor Documentation

IlvDTEDReader() [1/3]

IlvDTEDReader::IlvDTEDReader

(

const char *

filename

)

Initializes a new instance of the DTED reader for a specified file name.

Parameters

filename

The name of the DTED file to be read.

IlvDTEDReader() [2/3]

IlvDTEDReader::IlvDTEDReader

(

std::istream &

input

)

Initializes a new instance of the DTED reader from an input stream.

Parameters

input

An input stream, that must be opened on a DTED file.

IlvDTEDReader() [3/3]

IlvDTEDReader::IlvDTEDReader

(

IlIUrlStream &

input

)

Initializes a new instance of the DTED reader from a IlIUrlStream.

Parameters

input

A stream opened on a DTED URL.

Member Function Documentation

getDefaultFeatureRenderer()

IlvFeatureRenderer* IlvDTEDReader::getDefaultFeatureRenderer ( IlvDisplay *  display )

virtual

Returns an instance of IlvDefaultFeatureRenderer.

Parameters

display

The display instance that is used by the renderer.

Returns

An instance of IlvDefaultFeatureRenderer.

Implements IlvMapFeatureIterator.

getInitStatus()

virtual IlvMapsError IlvDTEDReader::getInitStatus ( ) const

virtual

Checks the initialization status of this feature iterator.

Returns

The error code that may have happened during the iterator initialization.

Implements IlvMapFeatureIterator.

getLowerRightCorner()

virtual IlBoolean IlvDTEDReader::getLowerRightCorner ( IlvCoordinate &  result ) const

virtual

Computes the lower right corner of the rectangle containing all the map features of this iterator.

Parameters

result

Set on return to the lower right corner of the rectangle containing all the map features of this iterator.

Returns

IlFalse if lower right is unknown.

Implements IlvMapFeatureIterator.

getNextFeature()

virtual const IlvMapFeature* IlvDTEDReader::getNextFeature ( IlvMapsError &  status )

virtual

Returns the next map feature of the iterator.

Parameters

status

Set on return to the status of the operation. This status is IlvMaps::NoError() if no error occurs.

Returns

The next map feature available, or 0 if the iteration is finished. The returned feature is owned by the feature iterator.

Implements IlvMapFeatureIterator.

getProjection()

const IlvProjection* IlvDTEDReader::getProjection ( ) const

virtual

Returns the projection used in the DTED file.

The projection is an IlvGeographicProjection.

Returns

The projection.

Implements IlvMapFeatureIterator.

getUpperLeftCorner()

virtual IlBoolean IlvDTEDReader::getUpperLeftCorner ( IlvCoordinate &  result ) const

virtual

Computes the upper left corner of the rectangle containing all the map features of this iterator.

Parameters

result

Set on return to the upper left corner of the rectangle containing all the map features of this iterator.

Returns

IlFalse if upper left is unknown.

Implements IlvMapFeatureIterator.