How to GetBinCenter in case TH2Poly with Honeycomb?

ROOT
1

How to get position of a bin created by TH2Poly with Honeycomb? Is there any good way?

The usual way to do this does’t work:

double x=h->GetXaxis()->GetBinCenter(ibin); double y=h->GetYaxis()->GetBinCenter(ibin);

The print of histogram also shows nonsense.

2 
double x=h->GetXaxis()->GetBinCenter(ibin);
double y=h->GetYaxis()->GetBinCenter(ibin);

By definition there is no bins along the X and Y axis for a TH2Poly as each bin is defined individually as a polygon.