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LSSTDataManagementBasePackage
PyPixelRegion.h
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1 // -*- lsst-c++ -*-
2 
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24 
25 // This is a bit of swig-only C++ code that ideally we'd put in a %inline block,
26 // but it turns out %inline blocks don't get pulled in by %import statements,
27 // causing problems downstream problems in any module that %imports ellipsesLib.i
28 // or PixelRegion.i. So instead, we separate it into a .h file that must be
29 // #included inside a %{ %} block in any module that includes ellipsesLib.i.
30 // Still ugly, but at least it makes it possible for downstream modules to include
31 // ellipsesLib.i. If someone has a better solution, I'd love to hear about it.
32 // Note that we also have to put it in include/ rather than python/, because we
33 // need it to be in the include path when we compile SWIG modules, not just when
34 // we generate them.
35 
36 class PyPixelRegionIterator : private boost::noncopyable {
37 public:
38 
39  lsst::afw::geom::Span get() const { return *_current; }
40 
41  void increment() { ++_current; }
42 
43  bool atEnd() const { return _current == _end; }
44 
48  PyObject * owner = NULL
49  ) : _current(begin), _end(end), _owner(owner) {
50  Py_XINCREF(_owner);
51  }
52 
53  ~PyPixelRegionIterator() { Py_XDECREF(_owner); }
54 
55 private:
58  PyObject * _owner;
59 };
A range of pixels within one row of an Image.
Definition: Span.h:54
bool atEnd() const
Definition: PyPixelRegion.h:43
lsst::afw::geom::ellipses::PixelRegion::Iterator _end
Definition: PyPixelRegion.h:57
lsst::afw::geom::ellipses::PixelRegion::Iterator _current
Definition: PyPixelRegion.h:56
PyPixelRegionIterator(lsst::afw::geom::ellipses::PixelRegion::Iterator const &begin, lsst::afw::geom::ellipses::PixelRegion::Iterator const &end, PyObject *owner=NULL)
Definition: PyPixelRegion.h:45