Calculating cov calculating cov crosshairs

Kev suav ntawm cov ces kaum sawed tawm crosshairs rau rooj tog

X - Qhov dav ntawm cov qauv.
Y - Qhov siab ntawm tus qauv.
E - Lub thickness ntawm seem.

Nta ntawm qhov kev pab cuam.

Kev xam ntawm qhov ntau thiab tsawg thiab cov kaum ntawm sawed tawm seem ntawm cov rooj tog crosshairs.