1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
#include "labeller.h"
#include "settings.h"
#include <fstream>
#include <iostream>
namespace backend {
struct labeller_impl {
std::vector<std::string> labels;
std::vector<std::string> rectangleLabels;
std::vector<label> annotations;
// Bool in undo/redo buffers is whether was applied or deleted
std::vector<std::pair<bool, label>> undoBuffer;
std::vector<std::pair<bool, label>> redoBuffer;
std::filesystem::path savepath;
};
void load(const std::filesystem::path& savepath, labeller_impl& data) {
std::ifstream in(savepath);
std::string line;
const char delim = ',';
while(std::getline(in, line)) {
// Fields are label,time,x1,y1,x2,y2
std::vector<std::string> parts;
std::size_t split;
while((split = line.find(delim)) != std::string::npos) {
parts.push_back(line.substr(0, split));
line = line.substr(split+1);
}
// And pick up that last part
parts.push_back(line);
if(parts.size() < 2) {
std::cerr << "Error reading " << savepath << std::endl;
throw std::runtime_error(savepath.string());
}
label lab(parts[0], std::stod(parts[1]));
if(parts.size() == 6) {
lab.location.x1 = std::stoi(parts[2]);
lab.location.y1 = std::stoi(parts[3]);
lab.location.x2 = std::stoi(parts[4]);
lab.location.y2 = std::stoi(parts[5]);
}
data.annotations.push_back(lab);
}
}
labeller::labeller(const std::filesystem::path& savepath) {
data = std::shared_ptr<labeller_impl>(new labeller_impl);
data->labels = settings::getLabels();
data->rectangleLabels = settings::getRectangleLabels();
data->savepath = savepath;
if(std::filesystem::directory_entry(savepath).exists()) {
load(savepath, *data);
}
}
std::pair<label, label> labeller::getSurrounding(double time) const {
std::pair<label, label> labs;
if(!data->annotations.empty()) {
auto above = data->annotations.rbegin();
auto below = above;
auto rit = above;
while(++rit != data->annotations.rend()) {
if(rit->time > time && (above->time <= time || rit->time < above->time)) above = rit;
if(rit->time <= time && (below->time > time || rit->time > below->time)) below = rit;
}
if(below->time <= time) labs.first = *below;
if(above->time > time) labs.second = *above;
}
return labs;
}
std::vector<label>& labeller::getEditableLabels() {
return data->annotations;
}
std::vector<std::string> labeller::getLabels() const {
return data->labels;
}
std::vector<std::string> labeller::getRectangleLabels() const {
return data->rectangleLabels;
}
void appLab(std::vector<label>& annotations, label lab) {
annotations.push_back(lab);
}
void labeller::applyLabel(std::string name, double time) {
label lab(name, time);
appLab(data->annotations, lab);
data->undoBuffer.push_back({true, lab});
data->redoBuffer.clear();
}
double abs(double x) {
if(x < 0) x *= -1;
return x;
}
label delLab(std::vector<label>& annotations, double time) {
if(annotations.empty()) {
return label();
}
auto closest = annotations.rbegin();
auto rit = closest;
while(++rit != annotations.rend()) {
if(abs(rit->time - time) < abs(closest->time - time)) {
closest = rit;
}
}
label c(*closest);
annotations.erase(closest.base());
return c;
}
void labeller::deleteLabel(double time) {
label deleted = delLab(data->annotations, time);
data->undoBuffer.push_back({false, deleted});
data->redoBuffer.clear();
}
// Pops action from 'from', applies, and appends to 'to'.
void handleUndoRedo(std::vector<std::pair<bool, label>>& from, std::vector<std::pair<bool, label>>& to, std::vector<label>& annotations) {
if(! from.empty()) {
auto elem = from.back();
from.pop_back();
if(elem.first) { // It was applied, so we must unapply
delLab(annotations, elem.second.time);
} else {
appLab(annotations, elem.second);
}
to.push_back({! elem.first, elem.second});
}
}
void labeller::undo() {
handleUndoRedo(data->undoBuffer, data->redoBuffer, data->annotations);
}
void labeller::redo() {
handleUndoRedo(data->redoBuffer, data->undoBuffer, data->annotations);
}
bool compareLabels(label l1, label l2) {
return (l1.time < l2.time);
}
void labeller::save() const {
std::ofstream out;
std::filesystem::create_directories(data->savepath.parent_path());
out.open(data->savepath);
std::vector<label> a(data->annotations);
std::sort(a.begin(), a.end(), compareLabels);
for(label l : a) {
out << l.name << "," << l.time << "," << l.location.string() << std::endl;
}
out.close();
}
}
|
