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LSSTDataManagementBasePackage
ExposurePatch.h
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24 
25 #if !defined(LSST_MEAS_ALGORITHMS_EXPOSURE_PATCH_H)
26 #define LSST_MEAS_ALGORITHMS_EXPOSURE_PATCH_H
27 
28 #include "lsst/base.h"
30 #include "lsst/afw/image/Wcs.h"
32 
33 namespace lsst { namespace meas { namespace algorithms {
34 
38 template<typename ExposureT>
40 public:
41  typedef unsigned char FlagT;
42  typedef PTR(ExposurePatch) Ptr;
44 
46  ExposurePatch(CONST_PTR(ExposureT) exp,
47  CONST_PTR(afw::detection::Footprint) foot,
48  afw::geom::Point2D const& center
49  ): _exp(exp), _foot(foot), _center(center), _fromStandard(), _toStandard() {}
50  ExposurePatch(CONST_PTR(ExposureT) exp,
51  afw::detection::Footprint const& standardFoot,
52  afw::geom::Point2D const& standardCenter,
53  afw::image::Wcs const& standardWcs
54  ) : _exp(exp) {
55  afw::image::Wcs const& expWcs = *exp->getWcs();
56  afw::coord::Coord::ConstPtr sky = standardWcs.pixelToSky(standardCenter);
57  const_cast<CONST_PTR(afw::detection::Footprint)&>(_foot) = standardFoot.transform(standardWcs, expWcs,
58  exp->getBBox());
59  const_cast<afw::geom::Point2D&>(_center) = expWcs.skyToPixel(*sky);
60  const_cast<afw::geom::AffineTransform&>(_fromStandard) = standardWcs.linearizePixelToSky(*sky) *
61  expWcs.linearizeSkyToPixel(*sky);
62  const_cast<afw::geom::AffineTransform&>(_toStandard) = expWcs.linearizePixelToSky(*sky) *
63  standardWcs.linearizeSkyToPixel(*sky);
64  }
65 
67  CONST_PTR(ExposureT) const getExposure() const { return _exp; }
69  afw::geom::Point2D const& getCenter() const { return _center; }
72 
74  void setCenter(afw::geom::Point2D const& center) { _center = center; }
75 
76 private:
77  CONST_PTR(ExposureT) const _exp;
78  CONST_PTR(afw::detection::Footprint) const _foot;
79  afw::geom::Point2D _center;
80  afw::geom::AffineTransform const _fromStandard;
81  afw::geom::AffineTransform const _toStandard;
82 };
83 
85 template<typename ExposureT>
87  CONST_PTR(ExposureT) exp,
88  CONST_PTR(afw::detection::Footprint) foot,
89  afw::geom::Point2D const& center
90  ) {
91  return boost::make_shared<ExposurePatch<ExposureT> >(exp, foot, center);
92 }
93 template<typename ExposureT>
95  CONST_PTR(ExposureT) exp,
96  afw::detection::Footprint const& standardFoot,
97  afw::geom::Point2D const& standardCenter,
98  afw::image::Wcs const& standardWcs
99  ) {
100  return boost::make_shared<ExposurePatch<ExposureT> >(exp, standardFoot, standardCenter, standardWcs);
101 }
102 
103 }}} // namespace
104 
105 #endif
void setCenter(afw::geom::Point2D const &center)
Modifiers.
Definition: ExposurePatch.h:74
#define PTR(...)
Definition: base.h:41
Represent a set of pixels of an arbitrary shape and size.
boost::shared_ptr< ExposureT const > const getExposure() const
Accessors.
Definition: ExposurePatch.h:67
geom::AffineTransform linearizePixelToSky(coord::Coord const &coord, geom::AngleUnit skyUnit=geom::degrees) const
Return the local linear approximation to Wcs::pixelToSky at a point given in sky coordinates.
Definition: Wcs.cc:934
afw::geom::Point2D const & getCenter() const
Definition: ExposurePatch.h:69
geom::Point2D skyToPixel(geom::Angle sky1, geom::Angle sky2) const
Convert from sky coordinates (e.g. RA/dec) to pixel positions.
Definition: Wcs.cc:782
unsigned char FlagT
Type for flags.
Definition: ExposurePatch.h:41
#define CONST_PTR(...)
Definition: base.h:47
lsst::afw::detection::Footprint Footprint
Definition: Source.h:61
ExposurePatch(boost::shared_ptr< ExposureT const > exp, afw::detection::Footprint const &standardFoot, afw::geom::Point2D const &standardCenter, afw::image::Wcs const &standardWcs)
Definition: ExposurePatch.h:50
Implementation of the WCS standard for a any projection.
Definition: Wcs.h:107
boost::shared_ptr< coord::Coord > pixelToSky(double pix1, double pix2) const
Convert from pixel position to sky coordinates (e.g. RA/dec)
Definition: Wcs.cc:858
boost::shared_ptr< ExposurePatch const > ConstPtr
Definition: ExposurePatch.h:43
table::Key< table::Array< Kernel::Pixel > > image
Definition: FixedKernel.cc:117
boost::shared_ptr< ExposurePatch< ExposureT > > makeExposurePatch(boost::shared_ptr< ExposureT const > exp, boost::shared_ptr< afw::detection::Footprint const > foot, afw::geom::Point2D const &center)
Factory function for ExposurePatch.
Definition: ExposurePatch.h:86
boost::shared_ptr< ExposureT const > const _exp
Exposure to be measured.
Definition: ExposurePatch.h:77
An affine coordinate transformation consisting of a linear transformation and an offset.
boost::shared_ptr< ExposurePatch > Ptr
Definition: ExposurePatch.h:42
afw::geom::AffineTransform const & fromStandard() const
Definition: ExposurePatch.h:70
A set of pixels in an Image.
Definition: Footprint.h:62
afw::geom::Point2D _center
Center of source on exposure.
Definition: ExposurePatch.h:79
boost::shared_ptr< Footprint > transform(image::Wcs const &source, image::Wcs const &target, geom::Box2I const &region, bool doClip=true) const
Transform the footprint from one WCS to another.
afw::geom::AffineTransform const & toStandard() const
Definition: ExposurePatch.h:71
geom::AffineTransform linearizeSkyToPixel(coord::Coord const &coord, geom::AngleUnit skyUnit=geom::degrees) const
Return the local linear approximation to Wcs::skyToPixel at a point given in sky coordinates.
Definition: Wcs.cc:981
Point< double, 2 > Point2D
Definition: Point.h:286
boost::shared_ptr< Coord const > ConstPtr
Definition: Coord.h:73
afw::geom::AffineTransform const _fromStandard
Transform from standard WCS.
Definition: ExposurePatch.h:80
boost::shared_ptr< afw::detection::Footprint const > const getFootprint() const
Definition: ExposurePatch.h:68
afw::geom::AffineTransform const _toStandard
Transform to standard WCS.
Definition: ExposurePatch.h:81
boost::shared_ptr< afw::detection::Footprint const > const _foot
Footprint to be measured.
Definition: ExposurePatch.h:78