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This class reads geometries and attributes from Shape files. More...
#include <ilviews/maps/format/shapefile/shpfile.h>
Public Member Functions | |
IlvShapeFileReader (const char *shpFileName, const char *dbfFileName, const char *shxFileName=0) | |
Creates a new instance of IlvShapeFileReader to read features from files whose names are specified. More... | |
IlvShapeFileReader (IlvShapeSHPReader *shpReader, IlvShapeDBFReader *dbfReader, IlBoolean ownerOfReaders=IlFalse) | |
Creates a new instance of IlvShapeFileReader to read features from the specified IlvShapeSHPReader and IlvShapeDBFReader . The flag ownerOfReaders indicates if IlvShapeFileReader must delete the readers when IlvShapeFileReader is deleted. More... | |
IlvShapeFileReader (IlvShapeSHPReader *shpReader, IlvShapeDBFReader *dbfReader, IlvShapeFileIndex *shxIndex, IlBoolean ownerOfReaders=IlFalse) | |
Creates a new instance of IlvShapeFileReader to read features from the specified IlvShapeSHPReader a IlvShapeDBFReader and a IlvSHapeFileIndex . The flag ownerOfReaders indicates if IlvShapeFileReader must delete the readers when IlvShapeFileReader is deleted. More... | |
IlvShapeDBFReader * | getDBFReader () |
Returns the IlvShapeDBFReader used by this reader. More... | |
virtual IlvFeatureRenderer * | getDefaultFeatureRenderer (IlvDisplay *display) |
Returns the default renderer for this feature iterator. More... | |
virtual const IlvMapFeature * | getFeatureAt (IlInt index, IlvMapsError &status) |
Returns the feature located at the specified index. More... | |
IlvMapsError | getInitStatus () const |
Checks the initialization status of this reader. More... | |
IlBoolean | getLowerRightCorner (IlvCoordinate &result) const |
Returns the lower right corner of the rectangle containing all the map features of this iterator. More... | |
const IlvMapFeature * | getNextFeature (IlvMapsError &status) |
Returns the next available feature. More... | |
virtual IlvMapFeatureId * | getNextFeatureId (IlvMapsError &status) |
Returns the index of the next feature that is read. More... | |
const IlvProjection * | getProjection () const |
Returns the projection of geometries of this feature iterator. More... | |
IlvShapeSHPReader * | getSHPReader () |
Returns the IlvShapeSHPReader used by this reader. More... | |
IlvShapeFileIndex * | getSHXReader () |
Returns the IlvShapeFileIndex used by this reader. More... | |
IlBoolean | getUpperLeftCorner (IlvCoordinate &result) const |
Returns the upper left corner of the rectangle containing all the map features of this iterator. More... | |
IlBoolean | isLoadingAttributes () |
Specifies whether this reader is reading auxiliary attributes. More... | |
void | setSourceProjection (IlvProjection *projection) |
Sets the projection of geometries generated by this feature iterator. This method is to be used when feature source is not georeferenced. More... | |
virtual IlBoolean | skipNextFeature (IlvMapsError &status) |
Skips the next feature available from this feature iterator. | |
Public Member Functions inherited from IlvLookAheadFeatureIterator | |
virtual | ~IlvLookAheadFeatureIterator () |
Destructor. | |
Public Member Functions inherited from IlvMapFeatureIterator | |
virtual IlvClassInfo * | getClassInfo () const =0 |
Returns the class information for this feature iterator. More... | |
Protected Member Functions | |
virtual void | setInitStatus (IlvMapsError status) |
Sets the initialization status of this 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... | |
This class reads geometries and attributes from Shape files.
Library: ilvmaps
The IlvShapeFileReader
class combines a IlvShapeSHPReader
and a IlvShapeDBFReader
to read geometries and attributes from ESRI Arc/Info shape files.
IlvShapeSHPReader
, IlvShapeDBFReader
. IlvShapeFileReader::IlvShapeFileReader | ( | const char * | shpFileName, |
const char * | dbfFileName, | ||
const char * | shxFileName = 0 |
||
) |
Creates a new instance of IlvShapeFileReader
to read features from files whose names are specified.
shpFileName | The name of the .shp file. |
dbfFileName | The name of the .dbf file. If 0 , no attributes are read. |
shxFileName | The name of the index file (with a .shx or .SHX extension). |
IlvShapeFileReader::IlvShapeFileReader | ( | IlvShapeSHPReader * | shpReader, |
IlvShapeDBFReader * | dbfReader, | ||
IlBoolean | ownerOfReaders = IlFalse |
||
) |
Creates a new instance of IlvShapeFileReader
to read features from the specified IlvShapeSHPReader
and IlvShapeDBFReader
. The flag ownerOfReaders
indicates if IlvShapeFileReader
must delete the readers when IlvShapeFileReader
is deleted.
shpReader | The IlvShapeSHPReader . |
dbfReader | The IlvShapeDBFReader . If 0 , no attributes are read. |
ownerOfReaders | If IlTrue , the readers are owned by this IlvShapeFileReader . |
IlvShapeFileReader::IlvShapeFileReader | ( | IlvShapeSHPReader * | shpReader, |
IlvShapeDBFReader * | dbfReader, | ||
IlvShapeFileIndex * | shxIndex, | ||
IlBoolean | ownerOfReaders = IlFalse |
||
) |
Creates a new instance of IlvShapeFileReader
to read features from the specified IlvShapeSHPReader
a IlvShapeDBFReader
and a IlvSHapeFileIndex
. The flag ownerOfReaders indicates if IlvShapeFileReader
must delete the readers when IlvShapeFileReader
is deleted.
shpReader | The IlvShapeSHPReader . |
dbfReader | The IlvShapeDBFReader . If 0 , no attributes are read. |
shxIndex | The IlvShapeFileIndex . If 0 , the getFeatureAt() method will not work. |
ownerOfReaders | If IlTrue , the readers are owned by this IlvShapeFileReader . |
IlvShapeDBFReader* IlvShapeFileReader::getDBFReader | ( | ) |
Returns the IlvShapeDBFReader
used by this reader.
Returns the reader of the .dbf
file. This reader should not be modified or used to read attributes or it might be left in an inconsistent status.
|
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.
display | The IlvDisplay the graphic objects are attached to. |
Implements IlvMapFeatureIterator.
|
virtual |
Returns the feature located at the specified index.
Note that this only works if this IlvShapeFileReader
has been constructed with a .shx
file.
index | The location of the feature. |
status | An IlvMapsError if an error occurs. |
IlvMapFeature
read or 0
if an error occurs.
|
virtual |
Checks the initialization status of this reader.
IlvMaps::NoError()
if the initialization of this reader is successful, or an error if an error occured during the initalization. Implements IlvMapFeatureIterator.
|
virtual |
Returns the lower right corner of the rectangle containing all the map features of this iterator.
result | An IlvCoordinate to store the result. |
IlFalse
if lower right is unknown. Implements IlvMapFeatureIterator.
|
virtual |
Returns the next available feature.
Returns the next map feature of the iterator, of 0
if the iteration is finished. The returned feature is owned by the iterator, and therefore must not be deleted by application.
status | An IlvMapsError to store the read status. |
Implements IlvMapFeatureIterator.
|
virtual |
Returns the index of the next feature that is read.
Implements IlvLookAheadFeatureIterator.
|
virtual |
Returns the projection of geometries of this feature iterator.
Returns the projection in which the geometric coordinates of the map features are expressed or 0
if the feature iterator returns ungeoreferenced map features.
Implements IlvMapFeatureIterator.
IlvShapeSHPReader* IlvShapeFileReader::getSHPReader | ( | ) |
Returns the IlvShapeSHPReader
used by this reader.
Returns the reader of the .shp
file. This reader should not be modified. or used to read geometries or it might be left in an inconsistent status.
IlvShapeFileIndex* IlvShapeFileReader::getSHXReader | ( | ) |
Returns the IlvShapeFileIndex
used by this reader.
Returns the reader of the .shx
file. This reader should not be modified
|
virtual |
Returns the upper left corner of the rectangle containing all the map features of this iterator.
result | An IlvCoordinate to store the result. |
IlFalse
if upper left is unknown. Implements IlvMapFeatureIterator.
IlBoolean IlvShapeFileReader::isLoadingAttributes | ( | ) |
Specifies whether this reader is reading auxiliary attributes.
IlTrue
if this reader is reading auxiliary attributes.
|
protectedvirtual |
Sets the initialization status of this reader.
status | The new initialization status. |
|
virtual |
Sets the projection of geometries generated by this feature iterator. This method is to be used when feature source is not georeferenced.
projection | The projection to be set. This projection becomes shared and is locked by this feature iterator. |
Reimplemented from IlvMapFeatureIterator.
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