topic Re: IsSelfIntersecting property not working in ArcGIS JavaScript Maps SDK Questions

IsSelfIntersecting property not working

JamesS1 — Fri, 26 Jun 2020 12:59:13 GMT

I am using the SketchViewModel to draw a graphic. When I draw the polygon as self intersecting, most of the time, the isSelfIntersecting property on the geometry comes back as false. Sometimes, but infrequently, the same shape comes back as true. Is this a bug? Any other way to determine self intersection?

Also, I am not sure why there are two arrays for the rings array. Any thoughts on this?

This is using the Esri JavaScript API 4.11

Re: IsSelfIntersecting property not working

EricDurbin — Sat, 08 May 2021 06:02:04 GMT

I am also experiencing this bug.

Re: IsSelfIntersecting property not working

JohnGrayson — Fri, 07 May 2021 23:16:15 GMT

Do you have a very simple codepen showing the issue?

Re: IsSelfIntersecting property not working

EricDurbin — Sat, 08 May 2021 03:31:30 GMT

https://codepen.io/ericdurbin01/pen/eYvmQrM

Re: IsSelfIntersecting property not working

JohnGrayson — Mon, 10 May 2021 18:15:27 GMT

If you follow the vertices around in order you'll notice that they geometry does not self-intersect. Here's a codepen where we number the vertices so you can understand why this geometry doesn't self-intersect: https://codepen.io/john-grayson/pen/gOmaObZ