This class is an IlvMapFeatureIterator specialized for reading GeoTIFF files. More...

#include <ilviews/maps/format/geotiff/gtiffreader.h>

Inheritance diagram for IlvGeoTIFFReader:

Public Member Functions
	IlvGeoTIFFReader (const char *filename)
	Creates an instance of the GeoTIFF reader from a file name. More...

	IlvGeoTIFFReader (istream &input)
	Creates an instance of the GeoTIFF reader from an `istream`. More...

IlInt	getColumnCount ()
	Returns the number of columns. More...

IlvFeatureRenderer *	getDefaultFeatureRenderer (IlvDisplay *display)
	Returns the default renderer for this feature iterator. More...

IlInt	getImageHeight ()
	Returns the height of the image. More...

IlInt	getImageWidth ()
	Returns the width of the image. More...

virtual IlvMapsError	getInitStatus () const
	Checks the initialization status of this feature iterator. More...

virtual IlBoolean	getLowerRightCorner (IlvCoordinate &coordinate) const
	Returns the lower right corner of the rectangle containing all the map features of this iterator. More...

virtual const IlvMapFeature *	getNextFeature (IlvMapsError &status)
	Returns the next map feature of the iterator, or `0` if the iteration is finished. The returned feature is owned by the feature iterator. More...

const IlvProjection *	getProjection () const
	Returns the projection in which the geometric coordinates of the map features are expressed or `0` if the feature iterator returns ungeoreferenced map features. More...

IlInt	getRowCount ()
	Returns the number of row. More...

IlvTIFFStreamer *	getStreamer () const
	Retrieves the `IlvTIFFStreamer` opened by the reader. More...

IlUInt	getTileHeight ()
	Returns the height of a tile in pixels. More...

IlvRect &	getTileOrigin (IlvMapInfo *info)
	Returns the tile origin of the file opened by this reader. More...

IlUInt	getTileWidth ()
	Returns the width of a tile in pixels. More...

virtual IlBoolean	getUpperLeftCorner (IlvCoordinate &coordinate) const
	Returns the upper left corner of the rectangle containing all the map features of this iterator. More...

IlFloat	getXScale ()
	Returns the x pixel scale. More...

IlFloat	getYScale ()
	Returns the y pixel scale,. More...

IlBoolean	isTiled () const
	Tells if the file opened by the reader is tiled or not. More...

virtual IlvBitmapData *	readTile (IlInt col, IlInt row)
	Reads the specified tile. More...

void	setSourceProjection (IlvProjection *p)
	Sets the projection of geometries generated by this feature iterator. More...

Public Member Functions inherited from IlvMapFeatureIterator
virtual IlvClassInfo *	getClassInfo () const =0
	Returns the class information for this feature iterator. More...

Protected Member Functions
virtual IlvMapFeature *	getMapFeature ()
	Returns the map feature. More...

virtual void	setInitStatus (IlvMapsError status)
	Sets the error status of the reader. 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 is an IlvMapFeatureIterator specialized for reading GeoTIFF files.

Library: ilvmaps

Constructor & Destructor Documentation

IlvGeoTIFFReader::IlvGeoTIFFReader ( const char * filename )

Creates an instance of the GeoTIFF reader from a file name.

Parameters

filename The name of a GeoTIFF file.

IlvGeoTIFFReader::IlvGeoTIFFReader ( istream & input )

Creates an instance of the GeoTIFF reader from an istream.

Parameters

input A stream opened on a GeoTIFF file.

Member Function Documentation

IlInt IlvGeoTIFFReader::getColumnCount ( )

Returns the number of columns.

If the file is tiled, the method returns the number of columns. If not, this method returns 1.

IlvFeatureRenderer* IlvGeoTIFFReader::getDefaultFeatureRenderer ( IlvDisplay * display )

virtual

Returns the default renderer for this feature iterator.

Returns a renderer that can be used to translate the map features returned by this iterator into graphic objects. Feature iterators that store some rendering information in the attributes of the map features, such as color, text font, line thickness and so on, can return a specific renderer which is able to take these attributes into account during the rendering process.

Returns: The default renderer for this feature iterator.

Implements IlvMapFeatureIterator.

IlInt IlvGeoTIFFReader::getImageHeight ( )

Returns the height of the image.

Returns: The image height in pixels.

IlInt IlvGeoTIFFReader::getImageWidth ( )

Returns the width of the image.

Returns: The image width in pixels.

virtual IlvMapsError IlvGeoTIFFReader::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.

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

virtual

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

Returns: IlFalse if lower right is unknown.

Implements IlvMapFeatureIterator.

virtual IlvMapFeature* IlvGeoTIFFReader::getMapFeature ( )

protectedvirtual

Returns the map feature.

Returns: The IlvMapFeature.

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

virtual

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

Parameters

status Stores the status of the operation. This status is IlvMaps::NoError() if no error occurs.

Returns: The next map feature available.

Implements IlvMapFeatureIterator.

const IlvProjection* IlvGeoTIFFReader::getProjection ( ) const

virtual

Returns the projection in which the geometric coordinates of the map features are expressed or 0 if the feature iterator returns ungeoreferenced map features.

Returns: The projection of the geometry.

Implements IlvMapFeatureIterator.

IlInt IlvGeoTIFFReader::getRowCount ( )

Returns the number of row.

If the file is tiled, the method returns the number of rows. If not, this method returns 1.

IlvTIFFStreamer* IlvGeoTIFFReader::getStreamer ( ) const

Retrieves the IlvTIFFStreamer opened by the reader.

Returns: The IlvTIFFStreamer opened by the reader.

IlUInt IlvGeoTIFFReader::getTileHeight ( )

Returns the height of a tile in pixels.

Returns: The height of a tile in pixels, or 0 if the image is not tiled.

IlvRect& IlvGeoTIFFReader::getTileOrigin ( IlvMapInfo * info )

Returns the tile origin of the file opened by this reader.

If the file opened is not tiled, the method returns the whole image rectangle.

Parameters

info	The `IlvMapInfo` used to adapt images coordinates to Rogue Wave Views coordinates.

Returns: The tile origin.

IlUInt IlvGeoTIFFReader::getTileWidth ( )

Returns the width of a tile in pixels.

Returns: The width of a tile in pixels, or 0 if the image is not tiled.

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

virtual

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

Returns: IlFalse if upper left is unknown.

Implements IlvMapFeatureIterator.

IlFloat IlvGeoTIFFReader::getXScale ( )

Returns the x pixel scale.

Returns: The x pixels scale.

IlFloat IlvGeoTIFFReader::getYScale ( )

Returns the y pixel scale,.

Returns: The y pixels scale.

IlBoolean IlvGeoTIFFReader::isTiled ( ) const

Tells if the file opened by the reader is tiled or not.

Returns: IlTrue if the file is tiled, IlFalse otherwise.

virtual IlvBitmapData* IlvGeoTIFFReader::readTile	(	IlInt	col,
		IlInt	row
	)

virtual

Reads the specified tile.

This method reads the tile at col, row and returns the resulting IlvBitmapData. If the file is not tiled or if the tile at col, row is not part of the image, the method returns 0.

Returns: The resulting IlvBitmapData.

virtual void IlvGeoTIFFReader::setInitStatus ( IlvMapsError status )

protectedvirtual

Sets the error status of the reader.

Parameters

status The status to set.

void IlvGeoTIFFReader::setSourceProjection ( IlvProjection * projection )

virtual

Sets the projection of geometries generated by this feature iterator.

This method is to be used when feature source is not georeferenced. The default implementation of this method does nothing.

Parameters

projection The projection to be set. This projection becomes shared and is locked by this feature iterator.

Reimplemented from IlvMapFeatureIterator.

Rogue Wave ViewsMaps Package API Reference Guide

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Rogue Wave Views
Maps Package API Reference Guide