Baseline in a closed polygon by the Douglas-Peucker algorithm

[Iv-dot]

Hello,

How is the baseline determined if it is a closed polygon when simplifying with the Douglas-Peucker algorithm? With a regular line, it is the first and last point, but what about a closed polygon (where are the first and last points the same)?
thanks

[petrasovaa]

I don't know but you can try to figure it out from the source code or experiment with some artificial data.