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Дата изменения: Unknown Дата индексирования: Mon Feb 14 22:42:19 2011 Кодировка: Поисковые слова: comet |
Combine multiple ImageRegion's into a new dimension. More...
#include <WCConcatenation.h>
Public Member Functions | |
WCConcatenation (const PtrBlock< const ImageRegion * > ®ions, const WCBox &extendRange) | |
Combine the given regions. | |
WCConcatenation (Bool takeOver, const PtrBlock< const WCRegion * > ®ions, const WCBox &extendRange) | |
WCConcatenation (const WCConcatenation &other) | |
Copy constructor (copy semantics). | |
virtual | ~WCConcatenation () |
WCConcatenation & | operator= (const WCConcatenation &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 WCConcatenation * | fromRecord (const TableRecord &, const String &tableName) |
Convert correct object from a record. | |
Protected Member Functions | |
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 | |
void | fill () |
Do a check and fill the remainder of the object. | |
Private Attributes | |
WCBox | itsExtendBox |
Combine multiple ImageRegion's into a new dimension.
Public interface
The WCConcatenation class is a specialization of class WCCompound . It makes it possible to combine multiple regions and to add a dimension on them. The axis and the range (beginning and end) of that new dimension have to be specified using an WCBox object. That axes should not be an axis in the given regions.
WCConcatenation can be seen as a mixture of the classes WCUnion and WCExtension . Like WCUnion it combines regions and like WCExtension it increases the dimensionality for the new region (be it with only 1).
Unlike WCUnion the axes have to be the same in all regions, because creating a WCConcatenation means combining similar regions.
E.g. One can define a different polygon in the RA-DEC plane of each channel. WCConcatenation makes it possible to combine the polygons to one 3D region in the RA-DEC-Freq cube.
This example combines n
(relative) circles given in the RA,DEC plane along the FREQ-axis. In this example the regions used are circles with the same centers, but it is also possible to combine differently shaped regions. Note that WCConcatenation takes over the pointers to the individual regions, so they do not need to be deleted (the WCConcatenation destructor does it).
IPosition center (2,10,20); PtrBlock<ImageRegion*> cirPtr(n); for (i=0; i<n; i++) { // Each circle has a different radius. cirPtr(i) = new WCEllipsoid cir1 (center, 1 + i%(n/2)); } // Construct the concatenation for a range (given as a box in fractions). // Extend along the FREQ-axis (the 2nd axis in the given cSys).\. // Take over the region pointers. Vector<Quantity> blc(1); Vector<Quantity> trc(1); blc(0) = Quantity (0.25, "frac"); trc(0) = Quantity (0.75, "frac"); WCConcatenation region (True, cirPtr, WCBox(blc, trc, cSys, IPosition(1,2));
This example is artificial in the sense that WCEllipsoid does not exist yet and the WCBox constructor looks a bit different. One should probably also do a bit more trouble to find out if FREQ is indeed the 2nd axis in the coordinate system.
Definition at line 108 of file WCConcatenation.h.
casa::WCConcatenation::WCConcatenation | ( | const PtrBlock< const ImageRegion * > & | regions, | |
const WCBox & | extendRange | |||
) |
Combine the given regions.
When takeOver
is True, the destructor will delete the given regions. Otherwise a copy of the regions is made. The extend range has to be given as a 1-dimensional box.
casa::WCConcatenation::WCConcatenation | ( | Bool | takeOver, | |
const PtrBlock< const WCRegion * > & | regions, | |||
const WCBox & | extendRange | |||
) |
casa::WCConcatenation::WCConcatenation | ( | const WCConcatenation & | other | ) |
Copy constructor (copy semantics).
virtual casa::WCConcatenation::~WCConcatenation | ( | ) | [virtual] |
static String casa::WCConcatenation::className | ( | ) | [static] |
Get the class name (to store in the record).
virtual WCRegion* casa::WCConcatenation::cloneRegion | ( | ) | const [virtual] |
Make a copy of the derived object.
Implements casa::WCRegion.
virtual LCRegion* casa::WCConcatenation::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 casa::WCRegion.
void casa::WCConcatenation::fill | ( | ) | [private] |
Do a check and fill the remainder of the object.
static WCConcatenation* casa::WCConcatenation::fromRecord | ( | const TableRecord & | , | |
const String & | tableName | |||
) | [static] |
Convert correct object from a record.
Reimplemented from casa::WCRegion.
WCConcatenation& casa::WCConcatenation::operator= | ( | const WCConcatenation & | other | ) |
Assignment (copy semantics).
Comparison.
Reimplemented from casa::WCCompound.
virtual TableRecord casa::WCConcatenation::toRecord | ( | const String & | tableName | ) | const [virtual] |
Convert the (derived) object to a record.
Implements casa::WCRegion.
virtual String casa::WCConcatenation::type | ( | ) | const [virtual] |
WCBox casa::WCConcatenation::itsExtendBox [private] |
Definition at line 163 of file WCConcatenation.h.