How to determine if an object hit a certain point on the map with a radius of X?

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Newbie Ivanovich2019-09-02 06:05:59

Geometry

Newbie Ivanovich, 2019-09-02 06:05:59

there are point coordinates
"latitude": "71.848140",
"longitude": "137.618294",
"radius": "0.0005",
when tracking coordinates I get
"latitude": "XX.848140",
"longitude": "XXX.618294" ,
How to compare coordinates and find out whether the tracked object hit the point or not?

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3 answer(s)

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nrgian, 2019-09-02
@NovichokIvanovich

School geometry.
(X-A)*(X-A) + (YB)*(YB) < R

A

Alexander, 2019-09-02
@NeiroNx

Pythagorean theorem (right triangle). If the distance is less than the specified - then hit. In order not to suffer with the square root, you can compare the numbers already squared.

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Moskus, 2019-09-02
@Moskus

The Pythagorean theorem after reducing the points to a rectangular coordinate system. And then in degrees you count it there ...