如何在不使用Google地图的情况下将当前纬度和经度与折线相匹配

Question

I have been working on Google Maps API for a Project which is fully based on Google Maps.

What am doing is :- Storing all the encoded Polyline in database for a particular route. Now i have current position(Latitude and Longitude) for user in database.

Now i want to match if any route Polyline from database is passing from the point of user position or does current user position comes in between any of the polyline with certain amount of range.

I have gone through lots of sites with different ideas but seems nothing is working in my way. Please help me out with this.

This link seems to be helpful, where do i need to pass polyline here. And i want the position of current user should me matched if it lies in between the polyline/ with some specified range.

But they are using Polygon , do i need to convert Polyline to Polygon? http://www.codeproject.com/Articles/62482/A-Simple-Geo-Fencing-Using-Polygon-Method

Answer 1

You can accomplish these calculations by importing a geospatial library into your project or just adding some code.

Turf.js is a very interesting one in javascript and I believe turf.point-on-line is what you need. It'd take a location and a series of coordinates from your polygon and return the closest point on the polygon to your given location and the distance to it.

But you'll also find info on a similar answer