json - Swift：指向多边形？如何检查用户的位置是否属于Geo-JSON多边形？

我有一个用户的位置坐标。如果位置在一个多边形中，我如何通过OBJECTID，使用Swift或Objective-C返回它落在哪个多边形中？

我使用的示例JSON多边形数据如下所示：

{＆＃34; type＆＃34;：＆＃34; Feature＆＃34;，＆＃34; properties＆＃34;：{＆＃34; OBJECTID＆＃34;：10，＆＃34; District_N＆＃34 ;：＆＃34; 10＆＃34;，＆＃34; WARD＆＃34;：10}，＆＃34; geometry＆＃34;：{＆＃34; type＆＃34;：＆＃34; Polygon＆＃34; ，＆＃34;坐标＆＃34;：[[[-87.52389,41.742767]，[ - 87.524668,41.644637]，[ - 87.578588,41.64473]，[ - 87.580619,41.65028]，[ - 87.601709,41.676572]，[ - 87.60172 ，41.685837]，[ - 87.592251,41.703002]，[ - 87.592202,41.707656]，[ - 87.586051,41.707765]，[ - 87.585322,41.709059]，[ - 87.585162,41.720732]，[ - 87.563165,41.698022]，[ - 87.563275， 41.706395]，[ - 87.559645,41.706399]，[ - 87.559775,41.715404]，[ - 87.569434,41.715639]，[ - 87.566814,41.716484]，[ - 87.565902,41.722585]，[ - 87.556604,41.722701]，[ - 87.556693,41.726351 ]，[-87.554907,41.726374]，[ - 87.557838,41.729746]，[ - 87.552591,41.728229]，[ - 87.552639,41.730057]，[ - 87.555405,41.730014]，[ - 87.555585,41.737329]，[ - 87.556887,41.737313] ，[-87.555191,41.744277]，[ - 87.551526,41.7 42147]，[ - 87.550325,41.744674]，[ - 87.541923,41.744779]，[ - 87.541772,41.741144]，[ - 87.529645,41.741412]，[ - 87.530874,41.748023]，[ - 87.544007,41.753548]，[ - 87.540739,41.757435 ]，[ - 87.524445,41.760035]，[ - 87.52389,41.742767]]]}} ， {＆＃34;输入＆＃34;：＆＃34;功能＆＃34;，＆＃34;属性＆＃34;：{＆＃34; OBJECTID＆＃34;：11，＆＃34;区_N＆＃34;：＆＃34; 11＆＃34;，＆＃34; WARD＆＃34;：11}，＆＃34; geometry＆＃34;：{＆＃34; type＆＃34;：＆＃34; Polygon＆＃34;，＆＃ 34;坐标＆＃34;：[[[-87.647655,41.874319]，[ - 87.645662,41.874331]，[ - 87.644767,41.867185]，[ - 87.639218,41.867254]，[ - 87.639014,41.860018]，[ - 87.64194,41.859984] ，[-87.641864,41.857621]，[ - 87.639967,41.857648]，[ - 87.644938，41.852666]，[ - 87.638532,41.852792]，[ - 87.640478,41.849467]，[ - 87.631965,41.848252]，[ - 87.629944,41.846683]， [-87.629594,41.83097]，[ - 87.631504,41.830939]，[ - 87.631465,41.829064]，[ - 87.633842,41.827265]，[ - 87.633763,41.823616]，[ - 87.636354,41.823583]，[ - 87.635839,41.809046]，[ -87.640679,41.808952]，[ - 87.641275,41.805025]，[ - 87.645432,41.80494]，[ - 87.645538,41.808864]，[ - 87.65524,41.808734]，[ - 87.655246,41.81237]，[ - 87.665064,41.812222]，[ - 87.665568,41.830501]，[ - 87.657712,41.83072 6]，[ - 87.66436,41.839375]，[ - 87.664449,41.844617]，[ - 87.658043,41.847724]，[ - 87.646473,41.84919]，[ - 87.646495,41.852647]，[ - 87.648132,41.852613]，[ - 87.647673,41.859898 ]，[ - 87.656479,41.859765]，[ - 87.656554,41.862513]，[ - 87.650937,41.863499]，[ - 87.652815,41.873034]，[ - 87.647655,41.874319]]]}}

Swift：指向多边形？如何检查用户的位置是否属于Geo-JSON多边形？

1 个答案: