In this tutorial you will learn how to
You can download the code from here.
#include <opencv2/viz.hpp>
#include <iostream>
using namespace cv;
using namespace std;
/**
* @function main
*/
int main()
{
/// Create a window
viz::Viz3d myWindow("Viz Demo");
/// Start event loop
myWindow.spin();
/// Event loop is over when pressed q, Q, e, E
cout << "First event loop is over" << endl;
/// Access window via its name
viz::Viz3d sameWindow = viz::getWindowByName("Viz Demo");
/// Start event loop
sameWindow.spin();
/// Event loop is over when pressed q, Q, e, E
cout << "Second event loop is over" << endl;
/// Event loop is over when pressed q, Q, e, E
/// Start event loop once for 1 millisecond
sameWindow.spinOnce(1, true);
while(!sameWindow.wasStopped())
{
/// Interact with window
/// Event loop for 1 millisecond
sameWindow.spinOnce(1, true);
}
/// Once more event loop is stopped
cout << "Last event loop is over" << endl;
return 0;
}
Here is the general structure of the program:
/// Create a window
viz::Viz3d myWindow("Viz Demo");
/// Start event loop
myWindow.spin();
/// Access window via its name
viz::Viz3d sameWindow = viz::get("Viz Demo");
/// Event loop is over when pressed q, Q, e, E
/// Start event loop once for 1 millisecond
sameWindow.spinOnce(1, true);
while(!sameWindow.wasStopped())
{
/// Interact with window
/// Event loop for 1 millisecond
sameWindow.spinOnce(1, true);
}
Here is the result of the program.