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LSST Data Management Base Package
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polyMapUtils.cc
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1/*
2 * LSST Data Management System
3 * Copyright 2017 AURA/LSST.
4 *
5 * This product includes software developed by the
6 * LSST Project (http://www.lsst.org/).
7 *
8 * This program is free software: you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation, either version 3 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the LSST License Statement and
19 * the GNU General Public License along with this program. If not,
20 * see <https://www.lsstcorp.org/LegalNotices/>.
21 */
23#include "astshim/ChebyMap.h"
24#include "astshim/PolyMap.h"
25
26namespace ast {
27namespace detail {
28
29template <class AstMapT, class MapT>
30AstMapT *polyTranImpl(MapT const &mapping, bool forward, double acc, double maxacc, int maxorder,
31 std::vector<double> const &lbnd, std::vector<double> const &ubnd) {
32 // desired size of lbnd and ubnd
33 auto const bndSize = static_cast<unsigned int>(forward ? mapping.getNOut() : mapping.getNIn());
34
35 if (lbnd.size() != bndSize) {
37 os << "lbnd.size() = " << lbnd.size() << " != " << bndSize << " = "
38 << (forward ? "getNOut()" : "getNIn()");
39 throw std::invalid_argument(os.str());
40 }
41 if (ubnd.size() != bndSize) {
43 os << "ubnd.size() = " << ubnd.size() << " != " << bndSize << " = "
44 << (forward ? "getNOut()" : "getNIn()");
45 throw std::invalid_argument(os.str());
46 }
47
48 void *outRawMap = astPolyTran(mapping.getRawPtr(), static_cast<int>(forward), acc, maxacc, maxorder,
49 lbnd.data(), ubnd.data());
50 // Failure should result in a null pointer, so calling assertOK is unlikely to do anything,
51 // but better to be sure and than risk missing an uncaught error.
52 assertOK(reinterpret_cast<AstObject *>(outRawMap));
53 if (!outRawMap) {
54 throw std::runtime_error("Could not compute an inverse mapping");
55 }
56 return reinterpret_cast<AstMapT *>(outRawMap);
57}
58
59// Explicit instantiations
60template AstChebyMap *polyTranImpl<AstChebyMap>(ChebyMap const &, bool, double, double, int,
62template AstPolyMap *polyTranImpl<AstPolyMap>(PolyMap const &, bool, double, double, int,
64
65} // namespace detail
66} // namespace ast
A ChebyMap is a form of Mapping which performs a Chebyshev polynomial transformation.
Definition ChebyMap.h:97
PolyMap is a Mapping which performs a general polynomial transformation.
Definition PolyMap.h:49
T data(T... args)
AstMapT * polyTranImpl(MapT const &mapping, bool forward, double acc, double maxacc, int maxorder, std::vector< double > const &lbnd, std::vector< double > const &ubnd)
Call astPolyTran to set (or replace) one direction of a polynomial transform with a fit based on the ...
template AstPolyMap * polyTranImpl< AstPolyMap >(PolyMap const &, bool, double, double, int, std::vector< double > const &, std::vector< double > const &)
template AstChebyMap * polyTranImpl< AstChebyMap >(ChebyMap const &, bool, double, double, int, std::vector< double > const &, std::vector< double > const &)
AST wrapper classes and functions.
void assertOK(AstObject *rawPtr1=nullptr, AstObject *rawPtr2=nullptr)
Throw std::runtime_error if AST's state is bad.
Definition base.cc:49
T size(T... args)
T str(T... args)