Hello Rick, sorry for opening another thread for this. I would really like to help creating the polygon lasso tool.
Since 3 years I am a C# WPF/WinForms .Net Software Developer at a big German company that focuses on traffic engineering and I have been requesting this feature already 5 years ago.
At the moment I am working on polygon curves at work, so if you provide me a .sln with a lasso class with a canvas, I would be glad to implement this feature for you.
I can also explain the code to you via teams/skype and maybe you can give me a code review, etc.