1 /** -*- mode: c++ ; c-basic-offset: 2 -*-
2 * @file KeypointList.cpp
3 * @author Sebastien Fourey
4 * @date June 2018
5 * @brief Definition of the class KeypointList
6 *
7 * This file is part of the ZArt software's source code.
8 *
9 * Copyright Sebastien Fourey / GREYC Ensicaen (2010-...)
10 *
11 * https://foureys.users.greyc.fr/
12 *
13 * This software is a computer program whose purpose is to demonstrate
14 * the possibilities of the GMIC image processing language by offering the
15 * choice of several manipulations on a video stream acquired from a webcam. In
16 * other words, ZArt is a GUI for G'MIC real-time manipulations on the output
17 * of a webcam.
18 *
19 * This software is governed by the CeCILL license under French law and
20 * abiding by the rules of distribution of free software. You can use,
21 * modify and/ or redistribute the software under the terms of the CeCILL
22 * license as circulated by CEA, CNRS and INRIA at the following URL
23 * "http://www.cecill.info". See also the directory "Licence" which comes
24 * with this source code for the full text of the CeCILL license.
25 *
26 * As a counterpart to the access to the source code and rights to copy,
27 * modify and redistribute granted by the license, users are provided only
28 * with a limited warranty and the software's author, the holder of the
29 * economic rights, and the successive licensors have only limited
30 * liability.
31 *
32 * In this respect, the user's attention is drawn to the risks associated
33 * with loading, using, modifying and/or developing or reproducing the
34 * software by the user in light of its specific status of free software,
35 * that may mean that it is complicated to manipulate, and that also
36 * therefore means that it is reserved for developers and experienced
37 * professionals having in-depth computer knowledge. Users are therefore
38 * encouraged to load and test the software's suitability as regards their
39 * requirements in conditions enabling the security of their systems and/or
40 * data to be ensured and, more generally, to use and operate it in the
41 * same conditions as regards security.
42 *
43 * The fact that you are presently reading this means that you have had
44 * knowledge of the CeCILL license and that you accept its terms.
45 */
46 #include "KeypointList.h"
47 #include <cmath>
48 #include <cstring>
49
KeypointList()50 KeypointList::KeypointList() {}
51
add(const KeypointList::Keypoint & keypoint)52 void KeypointList::add(const KeypointList::Keypoint & keypoint)
53 {
54 _keypoints.push_back(keypoint);
55 }
56
isEmpty()57 bool KeypointList::isEmpty()
58 {
59 return _keypoints.empty();
60 }
61
clear()62 void KeypointList::clear()
63 {
64 _keypoints.clear();
65 }
66
position(int n) const67 QPointF KeypointList::position(int n) const
68 {
69 const Keypoint & kp = _keypoints[n];
70 return QPointF(kp.x, kp.y);
71 }
72
color(int n) const73 QColor KeypointList::color(int n) const
74 {
75 return _keypoints[n].color;
76 }
77
isRemovable(int n) const78 bool KeypointList::isRemovable(int n) const
79 {
80 return _keypoints[n].removable;
81 }
82
Keypoint(float x,float y,QColor color,bool removable,float radius,bool keepOpacityWhenSelected)83 KeypointList::Keypoint::Keypoint(float x, float y, QColor color, bool removable, float radius, bool keepOpacityWhenSelected)
84 : x(x), y(y), color(color), removable(removable), radius(radius), keepOpacityWhenSelected(keepOpacityWhenSelected)
85 {
86 }
87
Keypoint(QPointF point,QColor color,bool removable,float radius,bool keepOpacityWhenSelected)88 KeypointList::Keypoint::Keypoint(QPointF point, QColor color, bool removable, float radius, bool keepOpacityWhenSelected)
89 : x((float)point.x()), y((float)point.y()), color(color), removable(removable), radius(radius), keepOpacityWhenSelected(keepOpacityWhenSelected)
90 {
91 }
92
Keypoint(QColor color,bool removable,float radius,bool keepOpacityWhenSelected)93 KeypointList::Keypoint::Keypoint(QColor color, bool removable, float radius, bool keepOpacityWhenSelected)
94 : color(color), removable(removable), radius(radius), keepOpacityWhenSelected(keepOpacityWhenSelected)
95 {
96 setNaN();
97 }
98
isNaN() const99 bool KeypointList::Keypoint::isNaN() const
100 {
101 if (sizeof(float) == 4) {
102 unsigned int ix, iy;
103 std::memcpy(&ix, &x, sizeof(float));
104 std::memcpy(&iy, &y, sizeof(float));
105 return ((ix & 0x7fffffff) > 0x7f800000) || ((iy & 0x7fffffff) > 0x7f800000);
106 }
107 #ifdef isnan
108 return (isnan(x) || isnan(y));
109 #else
110 return !(x == x) || !(y == y);
111 #endif
112 }
113
setNaN()114 KeypointList::Keypoint & KeypointList::Keypoint::setNaN()
115 {
116 #ifdef NAN
117 x = y = (float)NAN;
118 #else
119 const double nanValue = -std::sqrt(-1.0);
120 x = y = (float)nanValue;
121 #endif
122 return *this;
123 }
124