问题描述
我有一个包含文档的集合，每个文档都有一个包含多边形的字段数组.
I have a collection with documents and each has a field array with polygons.
我想测试我的多边形geoIntersect是否与那些多边形中的任何一个相交.如果有帮助，它们都是盒形的.
I want to test if my polygon geoIntersects any of those polygons. They are all box-shaped if it helps.
如果您要添加我要测试的数组中的多边形的可能性，我会添加奖励积分.我不想让它与自己相交...
I will add bounty points if you add in the possibility of having my polygon in that array I'm testing. I wouldn't want it intersect with itself...
城市:
{_id, buildings:[ {coo:{shape:"Polygon", coordinates:[ [0,0], [4,0], [4,5], [5,0],[0,0] ] }, {coo:{shape:"Polygon", coordinates:[ [0,0], [4,0], [4,5], [5,0],[0,0] ] } ] }}
想象一下我在数组中大约有100个左右的元素.我想确定，对于给定的形状，它是否可以与数组中的任何其他多边形或不与其他多边形相交(同样，不包括其自身在内).
Imagine I have around 100 or so elements in the array.I want to determine if, for a given shape, that might be included inside the array, if it intersects any or none of the other polygons (again, excluding itself it is in there).
推荐答案
尝试一下:
<collection>.findOne({ 'polygons': { $geoIntersects: { $geometry: { type: "Point", coordinates: [Longitude, Latitude] } } } }
这篇关于如何在数组子字段中使用$ geoIntersects/2dsphere执行查找?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！