LSSTApplications  19.0.0-10-g4a5fae6+3,19.0.0-10-g920eed2,19.0.0-11-g48a0200+2,19.0.0-18-gfc4e62b+16,19.0.0-2-g3b2f90d+2,19.0.0-2-gd671419+6,19.0.0-20-g5a5a17ab+14,19.0.0-21-g2644856+17,19.0.0-24-g0913cb1,19.0.0-24-g878c510+4,19.0.0-25-g6c8df7140+1,19.0.0-25-gb330496+4,19.0.0-3-g2b32d65+6,19.0.0-3-g8227491+15,19.0.0-3-g9c54d0d+15,19.0.0-3-gca68e65+11,19.0.0-3-gcfc5f51+6,19.0.0-3-ge110943+14,19.0.0-3-ge74d124,19.0.0-30-g9c3fd16+5,19.0.0-4-g06f5963+6,19.0.0-4-g10df615,19.0.0-4-g3d16501+17,19.0.0-4-g4a9c019+6,19.0.0-4-g5a8b323,19.0.0-4-g66397f0+1,19.0.0-4-g8557e14,19.0.0-4-g8964aba+16,19.0.0-4-ge404a01+15,19.0.0-5-g40f3a5a,19.0.0-5-g4db63b3,19.0.0-5-gb9eeb60,19.0.0-5-gfb03ce7+16,19.0.0-6-gbaebbfb+15,19.0.0-61-gec4c6e08+5,19.0.0-7-g039c0b5+15,19.0.0-7-gbea9075+4,19.0.0-7-gc567de5+16,19.0.0-72-g37abf38+2,19.0.0-9-g463f923+15,v20.0.0.rc1
LSSTDataManagementBasePackage
ImageUtils.h
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1 // -*- lsst-c++ -*-
2 
3 /*
4  * LSST Data Management System
5  * Copyright 2008, 2009, 2010 LSST Corporation.
6  *
7  * This product includes software developed by the
8  * LSST Project (http://www.lsst.org/).
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 LSST License Statement and
21  * the GNU General Public License along with this program. If not,
22  * see <http://www.lsstcorp.org/LegalNotices/>.
23  */
24 
25 /*
26  * Image utility functions
27  */
28 #ifndef LSST_AFW_IMAGE_IMAGEUTILS_H
29 #define LSST_AFW_IMAGE_IMAGEUTILS_H
30 
31 #include <cmath>
32 
33 namespace lsst {
34 namespace afw {
35 namespace image {
36 enum xOrY { X, Y };
37 
44 const double PixelZeroPos = 0.0;
45 
55 inline double indexToPosition(double ind
56 ) {
57  return ind + PixelZeroPos;
58 }
59 
69 inline int positionToIndex(double pos
70 ) {
71  return static_cast<int>(std::floor(pos + 0.5 - PixelZeroPos));
72 }
73 
85 inline int positionToIndex(double &residual,
86  double pos
87 ) {
88  double fullIndex = pos - PixelZeroPos;
89  double roundedIndex = std::floor(fullIndex + 0.5);
90  residual = fullIndex - roundedIndex;
91  return static_cast<int>(roundedIndex);
92 }
98 inline std::pair<int, double> positionToIndex(double const pos,
99  bool
100 ) {
101  double residual; // fractional part of index
102  int const ind = positionToIndex(residual, pos); // integral part
103 
104  return std::pair<int, double>(ind, residual);
105 }
106 } // namespace image
107 } // namespace afw
108 } // namespace lsst
109 
110 #endif // LSST_AFW_IMAGE_IMAGEUTILS_H
lsst::afw::image
Backwards-compatibility support for depersisting the old Calib (FluxMag0/FluxMag0Err) objects.
Definition: imageAlgorithm.dox:1
std::floor
T floor(T... args)
lsst::afw::image::positionToIndex
int positionToIndex(double pos)
Convert image position to nearest integer index.
Definition: ImageUtils.h:69
std::pair
lsst::afw::image::PixelZeroPos
const double PixelZeroPos
position of center of pixel 0
Definition: ImageUtils.h:44
lsst::afw
Definition: imageAlgorithm.dox:1
lsst::afw::image::indexToPosition
double indexToPosition(double ind)
Convert image index to image position.
Definition: ImageUtils.h:55
lsst::afw::image::X
@ X
Definition: ImageUtils.h:36
lsst::afw::image::Y
@ Y
Definition: ImageUtils.h:36
lsst
A base class for image defects.
Definition: imageAlgorithm.dox:1
lsst::afw::image::xOrY
xOrY
Definition: ImageUtils.h:36