CODEWITHSUNDEEP
c++opencv
Atakan Erbaş
Atakan Erbaş

Reputation: 51

OpenCV animation

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.

Upvotes: 3

Views: 4924

Answers (1)

Haris
Haris

Reputation: 14053

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().

Upvotes: 6

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