Make the extension of an image region. More...
#include <WCExtension.h>
Public Member Functions | |
| WCExtension (const ImageRegion ®ion, const WCBox &extendBox) | |
| Construct the extension of an image region using the axes and blc,trc given in the extendBox. | |
| WCExtension (const WCExtension &other) | |
| Copy constructor (copy semantics). | |
| virtual | ~WCExtension () |
| WCExtension & | operator= (const WCExtension &other) |
| Assignment (copy semantics). | |
| virtual Bool | operator== (const WCRegion &other) const |
| Comparison. | |
| virtual WCRegion * | cloneRegion () const |
| Make a copy of the derived object. | |
| virtual String | type () const |
| Get the region type. | |
| virtual TableRecord | toRecord (const String &tableName) const |
| Convert the (derived) object to a record. | |
Static Public Member Functions | |
| static String | className () |
| Get the class name (to store in the record). | |
| static WCExtension * | fromRecord (const TableRecord &, const String &tableName) |
| Convert correct object from a record. | |
Protected Member Functions | |
| virtual Bool | canExtend () const |
| WCExtension can extend a region if WCBox can do so. | |
| virtual LCRegion * | doToLCRegion (const CoordinateSystem &cSys, const IPosition &shape, const IPosition &pixelAxesMap, const IPosition &outOrder) const |
| Convert to an LCRegion using the given coordinate system and shape. | |
Private Member Functions | |
| WCExtension (Bool takeOver, const PtrBlock< const WCRegion * > ®ions) | |
| Construct from multiple regions given as a Block. | |
| void | findAxes (IPosition &extendBoxAxes, IPosition &stretchBoxAxes, IPosition &stretchRegionAxes) const |
| Find the axes to be extended and stretched. | |
Make the extension of an image region.
Public interface
The WCExtension class is a specialization of class WCCompound . It makes it possible to extend a region along straight lines to other dimensions. It is also possible to extend existing axes with length 1, i.e. to stretch such axes. E.g. a circle in the RA,DEC plane can be extended to a cylinder in a RA,DEC,FREQ cube. It is possible to extend over more than one dimension. One can also limit the extension range E.g. in the forementioned example the circle can be extended for a given range of frequencies only.
The extension axes and ranges have to be given as a WCBox object. The axes which are part of the box and the region are the axes to be stretched. Box axes which are not part of the region are the extension axes.
Note that regions get automatically extended when a region is used for a higher dimensioned image. The extension is done for all unknown axes (for their entire length).
Definition at line 86 of file WCExtension.h.
| casacore::WCExtension::WCExtension | ( | const ImageRegion & | region, | |
| const WCBox & | extendBox | |||
| ) |
Construct the extension of an image region using the axes and blc,trc given in the extendBox.
The axes in region and box have to be disjoint.
| casacore::WCExtension::WCExtension | ( | const WCExtension & | other | ) |
Copy constructor (copy semantics).
| virtual casacore::WCExtension::~WCExtension | ( | ) | [virtual] |
| casacore::WCExtension::WCExtension | ( | Bool | takeOver, | |
| const PtrBlock< const WCRegion * > & | regions | |||
| ) | [private] |
Construct from multiple regions given as a Block.
When takeOver is True, the destructor will delete the given regions. Otherwise a copy of the regions is made.
| virtual Bool casacore::WCExtension::canExtend | ( | ) | const [protected, virtual] |
WCExtension can extend a region if WCBox can do so.
Reimplemented from casacore::WCRegion.
| static String casacore::WCExtension::className | ( | ) | [static] |
Get the class name (to store in the record).
| virtual WCRegion* casacore::WCExtension::cloneRegion | ( | ) | const [virtual] |
Make a copy of the derived object.
Implements casacore::WCRegion.
| virtual LCRegion* casacore::WCExtension::doToLCRegion | ( | const CoordinateSystem & | cSys, | |
| const IPosition & | shape, | |||
| const IPosition & | pixelAxesMap, | |||
| const IPosition & | outOrder | |||
| ) | const [protected, virtual] |
Convert to an LCRegion using the given coordinate system and shape.
pixelAxesMap(i) gives the pixel axis in cSys of axes i in the axesDesc.
Implements casacore::WCRegion.
| void casacore::WCExtension::findAxes | ( | IPosition & | extendBoxAxes, | |
| IPosition & | stretchBoxAxes, | |||
| IPosition & | stretchRegionAxes | |||
| ) | const [private] |
Find the axes to be extended and stretched.
The extend axes are the axis numbers in the box. For the stretch axes both box and region axes are returned.
| static WCExtension* casacore::WCExtension::fromRecord | ( | const TableRecord & | , | |
| const String & | tableName | |||
| ) | [static] |
Convert correct object from a record.
Reimplemented from casacore::WCRegion.
| WCExtension& casacore::WCExtension::operator= | ( | const WCExtension & | other | ) |
Assignment (copy semantics).
Reimplemented from casacore::WCCompound.
Comparison.
Reimplemented from casacore::WCCompound.
| virtual TableRecord casacore::WCExtension::toRecord | ( | const String & | tableName | ) | const [virtual] |
Convert the (derived) object to a record.
Implements casacore::WCRegion.
| virtual String casacore::WCExtension::type | ( | ) | const [virtual] |
1.6.1
