{
   auto ch2p1 = new TCanvas("ch2p1","ch2p1",600,400);
   auto h2p = new TH2Poly();
   h2p->SetName("h2poly_name");
   h2p->SetTitle("h2poly_title");
   double px1[] = {0, 5, 6};
   double py1[] = {0, 0, 5};
   double px2[] = {0, -1, -1, 0};
   double py2[] = {0, 0, -1, 3};
   double px3[] = {4, 3, 0, 1, 2.4};
   double py3[] = {4, 3.7, 1, 3.7, 2.5};
   h2p->AddBin(3, px1, py1);
   h2p->AddBin(4, px2, py2);
   h2p->AddBin(5, px3, py3);
   h2p->Fill(0.1, 0.01, 3);
   h2p->Fill(-0.5, -0.5, 7);
   h2p->Fill(-0.7, -0.5, 1);
   h2p->Fill(1, 3, 1.5);
   double fx[] = {0.1, -0.5, -0.7, 1};
   double fy[] = {0.01, -0.5, -0.5, 3};
   double fw[] = {3, 1, 1, 1.5};
   h2p->FillN(4, fx, fy, fw);
   h2p->Draw("col");
}