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LSST Data Management Base Package
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transformUtils.h
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1// -*- lsst-c++ -*-
2/*
3 * LSST Data Management System
4 * Copyright 2017 AURA/LSST.
5 *
6 * This product includes software developed by the
7 * LSST Project (http://www.lsst.org/).
8 *
9 * This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the LSST License Statement and
20 * the GNU General Public License along with this program. If not,
21 * see <http://www.lsstcorp.org/LegalNotices/>.
22 */
23
24#ifndef LSST_AFW_GEOM_TRANSFORMUTILS_H
25#define LSST_AFW_GEOM_TRANSFORMUTILS_H
26
27#include <memory>
28#include <vector>
29
30#include "astshim.h"
31#include "ndarray.h"
32
36
37namespace lsst {
38namespace afw {
39namespace geom {
40namespace detail {
42constexpr int serializationVersion = 1;
43
55template <class Transform>
57
71template <class Transform>
73
74/*
75 * Provide definitions here in the header file to avoid the need for explicit instantiations
76 */
77
78template <class Transform>
80 int version;
81 is >> version;
82 if (version != 1) {
84 "Unsupported version " + std::to_string(version));
85 }
86 std::string shortClassName;
87 is >> shortClassName;
88 if (shortClassName != Transform::getShortClassName()) {
90 os << "Class name in stream " << shortClassName << " != " << Transform::getShortClassName();
92 }
93 auto astStream = ast::Stream(&is, nullptr);
94 auto astObjectPtr = ast::Channel(astStream).read();
95 auto mapping = std::dynamic_pointer_cast<ast::Mapping>(astObjectPtr);
96 if (!mapping) {
98 os << "The AST serialization was read as a " << astObjectPtr->getClassName()
99 << " instead of a Mapping";
101 }
102
103 return std::make_shared<Transform>(*mapping);
104}
105
106template <class Transform>
109 transform.getMapping()->show(os, false); // false = do not write comments
110}
111
112} // namespace detail
113} // namespace geom
114} // namespace afw
115} // namespace lsst
116
117#endif
#define LSST_EXCEPT(type,...)
Create an exception with a given type.
Definition Exception.h:48
Channel provides input/output of AST objects.
Definition Channel.h:60
std::shared_ptr< Object > read()
Read an object from a channel.
Definition Channel.cc:52
A stream for ast::Channel.
Definition Stream.h:41
Transform LSST spatial data, such as lsst::geom::Point2D and lsst::geom::SpherePoint,...
Definition Transform.h:68
static std::string getShortClassName()
Return a short version of the class name with no punctuation.
Definition Transform.cc:137
Reports invalid arguments.
Definition Runtime.h:66
T make_shared(T... args)
void writeStream(Transform const &transform, std::ostream &os)
Serialize a Transform to an output stream.
constexpr int serializationVersion
version of serialization used when writing (older versions may also be supported when reading)
std::shared_ptr< Transform > readStream(std::istream &is)
Deserialize a Transform from an input stream.
T dynamic_pointer_cast(T... args)
T str(T... args)
T to_string(T... args)