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LSST Data Management Base Package
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_transformMap.cc
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1/*
2 * This file is part of afw.
3 *
4 * Developed for the LSST Data Management System.
5 * This product includes software developed by the LSST Project
6 * (https://www.lsst.org).
7 * See the COPYRIGHT file at the top-level directory of this distribution
8 * for details of code ownership.
9 *
10 * This program is free software: you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation, either version 3 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program. If not, see <https://www.gnu.org/licenses/>.
22 */
23
24#include "pybind11/pybind11.h"
26#include "pybind11/stl.h"
27
28#include <vector>
29
30#include "lsst/geom/Point.h"
34
35namespace py = pybind11;
36using namespace py::literals;
37
38namespace lsst {
39namespace afw {
40namespace cameraGeom {
41namespace {
42
43using PyTransformMap = py::classh<TransformMap>;
44using PyTransformMapConnection = py::classh<TransformMap::Connection>;
45
46void declareTransformMap(lsst::cpputils::python::WrapperCollection &wrappers) {
47 auto transformMap = wrappers.wrapType(PyTransformMap(wrappers.module, "TransformMap"), [](auto &mod,
48 auto &cls) {
49 cls.def(py::init([](CameraSys const &reference, TransformMap::Transforms const &transforms) {
50 // An apparent pybind11 bug: it's usually happy to cast away constness, but won't do it
51 // here.
52 return std::const_pointer_cast<TransformMap>(TransformMap::make(reference, transforms));
53 }),
54 "reference"_a, "transforms"_a);
55 cls.def(py::init([](CameraSys const &reference,
56 std::vector<TransformMap::Connection> const &connections) {
57 // An apparent pybind11 bug: it's usually happy to cast away constness, but won't do it
58 // here.
59 return std::const_pointer_cast<TransformMap>(TransformMap::make(reference, connections));
60 }),
61 "reference"_a, "connections"_a);
62 cls.def("__len__", &TransformMap::size);
63 cls.def("__contains__", &TransformMap::contains);
64 cls.def(
65 "__iter__",
66 [](TransformMap const &self) { return py::make_iterator(self.begin(), self.end()); },
67 py::keep_alive<0, 1>()); /* Essential: keep object alive while iterator exists */
68
69 cls.def("transform",
70 py::overload_cast<lsst::geom::Point2D const &, CameraSys const &, CameraSys const &>(
71 &TransformMap::transform, py::const_),
72 "point"_a, "fromSys"_a, "toSys"_a);
73 cls.def("transform",
74 py::overload_cast<std::vector<lsst::geom::Point2D> const &, CameraSys const &,
75 CameraSys const &>(&TransformMap::transform, py::const_),
76 "pointList"_a, "fromSys"_a, "toSys"_a);
77 cls.def("getTransform", &TransformMap::getTransform, "fromSys"_a, "toSys"_a);
78 cls.def("getConnections", &TransformMap::getConnections);
79 cls.def("getFocalPlaneParity", &TransformMap::getFocalPlaneParity);
81 });
82 wrappers.wrapType(PyTransformMapConnection(transformMap, "Connection"), [](auto &mod, auto &cls) {
83 cls.def(py::init<std::shared_ptr<afw::geom::TransformPoint2ToPoint2 const>, CameraSys const &,
84 CameraSys const &>(),
85 "transform"_a, "fromSys"_a, "toSys"_a);
86 cls.def_readwrite("transform", &TransformMap::Connection::transform);
87 cls.def_readwrite("fromSys", &TransformMap::Connection::fromSys);
88 cls.def_readwrite("toSys", &TransformMap::Connection::toSys);
89 cpputils::python::addOutputOp(cls, "__repr__");
90 });
91}
92} // namespace
93void wrapTransformMap(lsst::cpputils::python::WrapperCollection &wrappers) { declareTransformMap(wrappers); }
94
95} // namespace cameraGeom
96} // namespace afw
97} // namespace lsst
Camera coordinate system; used as a key in in TransformMap.
Definition CameraSys.h:83
A registry of 2-dimensional coordinate transforms for a specific camera.
static std::shared_ptr< TransformMap const > make(CameraSys const &reference, Transforms const &transforms)
Construct a TransformMap with all transforms relative to a single reference CameraSys.
bool getFocalPlaneParity() const noexcept
Return True if there is an x-axis flip from FOCAL_PLANE to FIELD_ANGLE, false otherwise.
size_t size() const noexcept
Get the number of supported coordinate systems.
bool contains(CameraSys const &system) const noexcept
Can this transform to and from the specified coordinate system?
std::vector< Connection > getConnections() const
Return the sequence of connections used to construct this Transform.
std::shared_ptr< geom::TransformPoint2ToPoint2 > getTransform(CameraSys const &fromSys, CameraSys const &toSys) const
Get a Transform from one camera coordinate system to another.
lsst::geom::Point2D transform(lsst::geom::Point2D const &point, CameraSys const &fromSys, CameraSys const &toSys) const
Convert a point from one camera coordinate system to another.
A helper class for subdividing pybind11 module across multiple translation units (i....
Definition python.h:242
PyType wrapType(PyType cls, ClassWrapperCallback function, bool setModuleName=true)
Add a type (class or enum) wrapper, deferring method and other attribute definitions until finish() i...
Definition python.h:391
pybind11::module module
The module object passed to the PYBIND11_MODULE block that contains this WrapperCollection.
Definition python.h:448
void wrapTransformMap(lsst::cpputils::python::WrapperCollection &)
void addPersistableMethods(pybind11::class_< Class, Args... > &cls)
Add table::io::Persistable and PersistableFacade methods to the pybind11 wrapper for a class.
Definition python.h:56
void addOutputOp(PyClass &cls, std::string const &method)
Add __str__ or __repr__ method implemented by operator<<.
Definition python.h:87
T const_pointer_cast(T... args)
std::shared_ptr< geom::TransformPoint2ToPoint2 const > transform