OpenCV animation

Question

I am making Langton's Ant in C++, when I try to draw squares, I can. But I can't make this in loop.

for(int i = 0;i<=100;i++){
        rectangle( image, Point( i*5, 0 ), Point( (i*5)+5, 5), Scalar( 0, 55, 255 ), CV_FILLED, 4 );
        imshow("kare",image);
        Sleep(100);
    }

It waits for 10 seconds, then draw all the squares same time. If I add cvWaitKey(0); before sleep, I get same problem. When I "touch" the key, it draw, but when I hold, it doesn't draw. When I back off my finger, it draw.

How can I solve it? Regards.

Answer 1

You are mixing C and C++ API, cvWaitKey(0) belongs to deprecated C. Also cvWaitKey(0) waits until user press key.

So just use

waitKey(33) instead of sleep(), which will wait 33 ms after each imshow().