[scenario_editor] More clear error message when "Triangulation of polygon vertices failed"

[felixf4xu]

This is a problem that I had with https://scenario.ci.tier4.jp/scenario_editor, it does not directly belong to this repo but I hope it's related.

When I uploaded a map made by myself and I had this error:

Triangulation of polygon vertices failed. This error may occur if there are duplicate vertices.

I think it's useful but it can be more clear if the failed vertices can print their id, so that I can re-edit the map file.

Or even more ideally, https://tools.tier4.jp/vector_map_builder_ll2/ can have this kind of check before exporting the map file.

[hakuturu583]

Thank you for reporting issue.
I notify to the developer of scenario editor.

[aratafuji]

@felixf4xu
Sorry for the late reply.
And thank you for your improvement suggestion.
I have added your suggestion to the Scenario Editor's Backlog list.

It will take a while to implement, but we will contact you when it is completed.