LSSTApplications  19.0.0-14-gb0260a2+72efe9b372,20.0.0+7927753e06,20.0.0+8829bf0056,20.0.0+995114c5d2,20.0.0+b6f4b2abd1,20.0.0+bddc4f4cbe,20.0.0-1-g253301a+8829bf0056,20.0.0-1-g2b7511a+0d71a2d77f,20.0.0-1-g5b95a8c+7461dd0434,20.0.0-12-g321c96ea+23efe4bbff,20.0.0-16-gfab17e72e+fdf35455f6,20.0.0-2-g0070d88+ba3ffc8f0b,20.0.0-2-g4dae9ad+ee58a624b3,20.0.0-2-g61b8584+5d3db074ba,20.0.0-2-gb780d76+d529cf1a41,20.0.0-2-ged6426c+226a441f5f,20.0.0-2-gf072044+8829bf0056,20.0.0-2-gf1f7952+ee58a624b3,20.0.0-20-geae50cf+e37fec0aee,20.0.0-25-g3dcad98+544a109665,20.0.0-25-g5eafb0f+ee58a624b3,20.0.0-27-g64178ef+f1f297b00a,20.0.0-3-g4cc78c6+e0676b0dc8,20.0.0-3-g8f21e14+4fd2c12c9a,20.0.0-3-gbd60e8c+187b78b4b8,20.0.0-3-gbecbe05+48431fa087,20.0.0-38-ge4adf513+a12e1f8e37,20.0.0-4-g97dc21a+544a109665,20.0.0-4-gb4befbc+087873070b,20.0.0-4-gf910f65+5d3db074ba,20.0.0-5-gdfe0fee+199202a608,20.0.0-5-gfbfe500+d529cf1a41,20.0.0-6-g64f541c+d529cf1a41,20.0.0-6-g9a5b7a1+a1cd37312e,20.0.0-68-ga3f3dda+5fca18c6a4,20.0.0-9-g4aef684+e18322736b,w.2020.45
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