Hi,

I'm working on an application with places of complex boundaries and allow users to union them when desired. I have tried about 5 JS polygon libraries and I have to say yours is the best. They all error out on different edge cases but polybooljs seems to handle most cases well.

I have encountered a few edge cases where your polygon union I believe does not give accurate results.

Here is an example:

polygon 1 coords

[[[-79.28426250055173,43.68075543492089],[-79.28335754511745,43.67858119554888],[-79.28272426128387,43.67753878734541],[-79.28426250055173,43.68075543492089]]]

polygon 2 coords

[[[-79.2839527130127,43.67786274564595],[-79.28335754511743,43.67858119554888],[-79.2829332351944,43.67755625060114],[-79.2839527130127,43.67786274564595]]]

polybooljs union result of the above 2 polygons

[[],[[-79.28272426128387,43.67753878734541],[-79.28335754511737,43.67858119554873],[-79.2829332351944,43.67755625060114],[-79.2839527130127,43.67786274564595],[-79.28335754511743,43.67858119554888],[-79.28426250055173,43.68075543492089]]]

I am able to plot both my polygons on geojson.io but not the generated union polygon.

I would really appreciate if you could look into this and provide some guidance.

Thanks