How to gather points that can be directly connected with respect to buildings?

Question

So I want to do something like this:

Based on this sample I was able to draw OSM maps and add points based on this one.

I wonder how to throw rays between points and see if they intersect with OSM buildings?

Answer 1

First you would want OSM data in vector format where you can get building information in vector form. You may try this source: https://openlayers.org/en/latest/examples/osm-vector-tiles.html Connect points with Line features and use intersect operation to find if any buildings intersect with this lines.