1 /**
2 * @file launching_viz.cpp
3 * @brief Launching visualization window
4 * @author Ozan Cagri Tonkal
5 */
6
7 #include <opencv2/viz.hpp>
8 #include <iostream>
9
10 using namespace cv;
11 using namespace std;
12
13 /**
14 * @function help
15 * @brief Display instructions to use this tutorial program
16 */
help()17 void help()
18 {
19 cout
20 << "--------------------------------------------------------------------------" << endl
21 << "This program shows how to launch a 3D visualization window. You can stop event loop to continue executing. "
22 << "You can access the same window via its name. You can run event loop for a given period of time. " << endl
23 << "Usage:" << endl
24 << "./launching_viz" << endl
25 << endl;
26 }
27
28 /**
29 * @function main
30 */
main()31 int main()
32 {
33 help();
34 /// Create a window
35 viz::Viz3d myWindow("Viz Demo");
36
37 /// Start event loop
38 myWindow.spin();
39
40 /// Event loop is over when pressed q, Q, e, E
41 cout << "First event loop is over" << endl;
42
43 /// Access window via its name
44 viz::Viz3d sameWindow = viz::get("Viz Demo");
45
46 /// Start event loop
47 sameWindow.spin();
48
49 /// Event loop is over when pressed q, Q, e, E
50 cout << "Second event loop is over" << endl;
51
52 /// Event loop is over when pressed q, Q, e, E
53 /// Start event loop once for 1 millisecond
54 sameWindow.spinOnce(1, true);
55 while(!sameWindow.wasStopped())
56 {
57 /// Interact with window
58
59 /// Event loop for 1 millisecond
60 sameWindow.spinOnce(1, true);
61 }
62
63 /// Once more event loop is stopped
64 cout << "Last event loop is over" << endl;
65 return 0;
66 }
67