我有多个JSON文件（poly1.json，poly2.json），具有以下设置：
{
"Polygon1": {
"name": "poly1",
"specifications": [
{
"areaGeometry": {
"type": "Polygon",
"coordinates": [
[
[
5.129820025,
52.085407733
],
[
5.129117875,
52.086181679
],
[
5.128497179,
52.087946286
],
[
5.128458022,
52.088253322
],
[
5.12866837,
52.088507157
],
[
5.129251266,
52.088976802
],
[
5.129473861,
52.08926905
],
[
5.129385309,
52.089499203
],
[
5.12909759,
52.089698198
],
[
5.127961124,
52.090148712
],
[
5.127685173,
52.090462912
],
[
5.127310682,
52.091653473
],
[
5.12710699,
52.092271708
],
[
5.127126612,
52.092518366
],
[
5.128237531,
52.093468305
],
[
5.128130926,
52.093688728
],
[
5.126525853,
52.094399058
],
[
5.126377274,
52.09459342
],
[
5.126284571,
52.095035437
],
[
5.130996578,
52.095312264
],
[
5.137138625,
52.095591962
],
[
5.139036247,
52.095628598
],
[
5.138962372,
52.095484813
],
[
5.137879856,
52.093651573
],
[
5.137480747,
52.093048367
],
[
5.136997815,
52.092468872
],
[
5.13643473,
52.091917507
],
[
5.135795776,
52.091398471
],
[
5.134288171,
52.090401311
],
[
5.133608279,
52.089984575
],
[
5.133259679,
52.089768435
],
[
5.132932239,
52.089549796
],
[
5.132656508,
52.089342179
],
[
5.132411195,
52.089120552
],
[
5.132198186,
52.088886599
],
[
5.132143714,
52.088818019
],
[
5.130950838,
52.087097103
],
[
5.130737143,
52.086736442
],
[
5.130575274,
52.086365674
],
[
5.130403794,
52.085570404
],
[
5.129783706,
52.08522338
],
[
5.129820025,
52.085407733
]
]
]
}
}
],
}
}
现在我想在谷歌地图上绘制用户正在看的所有多边形 - 如果屏幕上有多边形。这样做的最佳方法是什么？我应该为每个人使用还是有更好的方法？你如何迭代它？这会不会让它变慢？