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这是一个创建于 3418 天前的主题，其中的信息可能已经有所发展或是发生改变。
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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1
zty5678 2015-07-15 11:38:38 +08:00
将经纬度坐标转化成墨卡托坐标系里的点?
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2
Shazoo 2015-07-15 17:18:28 +08:00
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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qianyanseu 2015-07-15 17:32:56 +08:00
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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qianyanseu 2015-07-15 17:34:50 +08:00
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 2015-07-15 18:21:58 +08:00
Keyword: 射线法
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6
ll0xff 2015-07-15 23:02:12 +08:00
GeoHash
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