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Index › Discussion › General Discussion,  Status › Math question: Is coord inside circle

Augusto Junior Member Offline Posts: 55 Portugal	Math question: Is coord inside circle? Mar 16th, 2010, 2:43am   I was wondering how to write a function to check if a coordinate is inside a circle. Has anyone tackled this before?

Augusto Junior Member Offline Posts: 55 Portugal	Re: Math question: Is coord inside circle? Reply #1 - Mar 16th, 2010, 3:35am   Found it   Here's the equation: (x - a)2 + (y - b)2 <= r2 with (a, b) being the center of the circle and (x, y) the coordinate you want to check.

PhiLho  YaBB Moderator Offline Posts: 4190 Near Paris (France)	Re: Math question: Is coord inside circle? Reply #2 - Mar 16th, 2010, 4:52am   Simply: dist() between coordinate and center of circle < radius of circle (or <=)

Rapatsk1 Junior Member Offline Posts: 99 www.tiemenrapati.com	Re: Math question: Is coord inside circle? Reply #3 - Mar 21st, 2010, 12:48pm   hehe, what PhiLho says.