用mapkit的overlay把一个城市的地图划分成若干自定义区域（多边形).在地图上给出一点的经度纬度如何判定其落在哪个自定义区域里？
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This topic created in 3967 days ago, the information mentioned may be changed or developed.
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1
zty5678 Jul 15, 2015
将经纬度坐标转化成墨卡托坐标系里的点?
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2
Shazoo Jul 15, 2015
射线法可以吧？看各边交点，偶数在外，奇数在内。不过每个区域不能自交叉。
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3
qianyanseu Jul 15, 2015
Stackoverflow 问答：How to check if MKCoordinateRegion contains CLLocationCoordinate2D without using MKMapView?
http://stackoverflow.com/questions/10553072/how-to-check-if-mkcoordinateregion-contains-cllocationcoordinate2d-without-using |
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4
qianyanseu Jul 15, 2015
另一个 Stackoverflow 问答：detect if a point is inside a MKPolygon overlay
http://stackoverflow.com/questions/10109677/detect-if-a-point-is-inside-a-mkpolygon-overlay |
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5
iDelicious Jul 15, 2015
Keyword: 射线法
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6
ll0xff Jul 15, 2015
GeoHash
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