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 | 1 | initial version |
pretty simple:
move the waitKey() call inside the loop. (if you do not want to "wait forever", you also want to add a timestep in milliseconds, like waitKey(500); // half a second
(imshow() just copies a pointer to the image, the actual drawing/blitting (whatever you might call it) is triggered from waitKey(). think of it like this: any gui prog needs a message loop, and waitKey() is implementing exactly tnhat,(
((it's doing far more than waiting for a keypress, which pretty regularily confuses noobs))
| | 2 | No.2 Revision |
pretty simple:
move the waitKey() call inside the loop. (if you do not want to "wait forever", you also want to add a timestep in milliseconds, like waitKey(500); // half a second
(imshow() just copies a pointer to the image, the actual drawing/blitting (whatever you might call it) is triggered from waitKey(). think of it like this: any gui prog needs a message loop, and waitKey() is implementing exactly tnhat,(that)
((it's doing far more than waiting for a keypress, which pretty regularily confuses noobs))
