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LSST Data Management Base Package
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AffineTransform.cc
Go to the documentation of this file.
1/*
2 * Developed for the LSST Data Management System.
3 * This product includes software developed by the LSST Project
4 * (https://www.lsst.org).
5 * See the COPYRIGHT file at the top-level directory of this distribution
6 * for details of code ownership.
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 GNU General Public License
19 * along with this program. If not, see <https://www.gnu.org/licenses/>.
20 */
21
22#include <iomanip>
23
24#include "Eigen/LU"
25
28
29namespace lsst {
30namespace geom {
31
34 r << (*this)[XX], (*this)[YX], (*this)[XY], (*this)[YY], (*this)[X], (*this)[Y];
35 return r;
36}
37
39 (*this)[XX] = vector[XX];
40 (*this)[XY] = vector[XY];
41 (*this)[X] = vector[X];
42 (*this)[YX] = vector[YX];
43 (*this)[YY] = vector[YY];
44 (*this)[Y] = vector[Y];
45}
46
48 Matrix r;
49 r << (*this)[XX], (*this)[XY], (*this)[X], (*this)[YX], (*this)[YY], (*this)[Y], 0.0, 0.0, 1.0;
50 return r;
51}
52
57
59 TransformDerivativeMatrix r = TransformDerivativeMatrix::Zero();
60 r.block<2, 4>(0, 0) = getLinear().dTransform(input);
61 r(0, X) = 1.0;
62 r(1, Y) = 1.0;
63 return r;
64}
65
67 TransformDerivativeMatrix r = TransformDerivativeMatrix::Zero();
68 r.block<2, 4>(0, 0) = getLinear().dTransform(input);
69 return r;
70}
71
73 std::ios::fmtflags flags = os.flags();
74 AffineTransform::Matrix const &matrix = transform.getMatrix();
75 int prec = os.precision(7);
76 os.setf(std::ios::fixed);
77 os << "AffineTransform([(" << std::setw(10) << matrix(0, 0) << "," << std::setw(10) << matrix(0, 1) << ","
78 << std::setw(10) << matrix(0, 2) << "),\n";
79 os << " (" << std::setw(10) << matrix(1, 0) << "," << std::setw(10) << matrix(1, 1) << ","
80 << std::setw(10) << matrix(1, 2) << "),\n";
81 os << " (" << std::setw(10) << matrix(2, 0) << "," << std::setw(10) << matrix(2, 1) << ","
82 << std::setw(10) << matrix(2, 2) << ")])";
83 os.precision(prec);
84 os.flags(flags);
85 return os;
86}
87
89 Point2D const &q1, Point2D const &q2, Point2D const &q3) {
90 Eigen::Matrix3d mp;
91 mp << p1.getX(), p2.getX(), p3.getX(), p1.getY(), p2.getY(), p3.getY(), 1.0, 1.0, 1.0;
92
93 Eigen::Matrix3d mq;
94 mq << q1.getX(), q2.getX(), q3.getX(), q1.getY(), q2.getY(), q3.getY(), 1.0, 1.0, 1.0;
95
96 Eigen::Matrix3d m = mq * mp.inverse();
97 return AffineTransform(m);
98}
99
100} // namespace geom
101} // namespace lsst
An affine coordinate transformation consisting of a linear transformation and an offset.
TransformDerivativeMatrix dTransform(Point2D const &input) const noexcept
Take the derivative of (*this)(input) w.r.t the transform elements.
void setParameterVector(ParameterVector const &vector) noexcept
Set the transform matrix elements from a parameter vector.
Matrix const getMatrix() const noexcept
Return the transform as a full 3x3 matrix.
ParameterVector const getParameterVector() const noexcept
Return the transform matrix elements as a parameter vector.
AffineTransform const inverted() const
Return the inverse transform.
Extent2D const & getTranslation() const noexcept
Eigen::Matrix< double, 2, 6 > TransformDerivativeMatrix
AffineTransform() noexcept
Construct an empty (identity) AffineTransform.
Eigen::Matrix< double, 6, 1 > ParameterVector
LinearTransform const & getLinear() const noexcept
A 2D linear coordinate transformation.
T flags(T... args)
AffineTransform makeAffineTransformFromTriple(Point2D const &p1, Point2D const &p2, Point2D const &p3, Point2D const &q1, Point2D const &q2, Point2D const &q3)
Extent< double, 2 > Extent2D
Definition Extent.h:400
std::ostream & operator<<(std::ostream &os, lsst::geom::AffineTransform const &transform)
Point< double, 2 > Point2D
Definition Point.h:324
T precision(T... args)
T setf(T... args)
T setw(T... args)