google maps - Check if point is in polygon or not -

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there region on map, , have check user placed marker on region. problem how declare "rectangular", how declare bounds lat , lng..

maybe wants know details: developing web application taxi company. so, user declare original , destinatoin putting 2 markers. , center of city, square 12x12 km. has constant tarif 10$. , tarif other destinations (outside square) calculated tarif km. db.

there may many ways, 1 possible:

create google.maps.circle center set center of city , radius of 12000.

all have check if destination placed within bounds of circle.

definedcircle.getbounds().contains(destinationlatlng)

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