我有一个多边形，我知道所有 4 个点。如何使用 OpenLayers 确定给定点是否在多边形内？

Question

我提到了这个 post How to determine if a point is inside a 2D convex polygon?

但我想在 OSM 中使用 Open 做同样的事情 Layers.Please 帮助我。

[Link](http://jsfiddle.net/Sanju5390/3tpLs6w3/)

Answer 1

你可以用 turf.js using turf.inside:

var polygon = new ol.Feature(new ol.geom.Polygon([[[-5e6, -1e6], [-4e6, 1e6],
            [-3e6, -1e6], [-5e6, -1e6]]]));
var point = new ol.Feature(new ol.geom.Point([-4e6, 0e6]));

var format = new ol.format.GeoJSON();
var isInside = turf.inside(
    format.writeFeatureObject(point),
    format.writeFeatureObject(polygon));
console.log(isInside);

http://jsfiddle.net/d6o81vc7/22/

我有一个多边形，我知道所有 4 个点。如何使用 OpenLayers 确定给定点是否在多边形内？

I have a polygon , and I know all of 4 points. How do I determine if a given point is inside the polygon with OpenLayers?

javascript

openlayers-3