CODEWITHSUNDEEP
javascriptopenlayers-3
Mindtek
Mindtek

Reputation: 114

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?

I referred this post How to determine if a point is inside a 2D convex polygon?

But I want to do the same in OSM with Open Layers.Please help me.

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

Upvotes: 1

Views: 807

Answers (1)

tsauerwein
tsauerwein

Reputation: 6011

You can do this with 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/

Upvotes: 1

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