Connect TGraph points with arrows

[jruizvid]

Hi. I want to plot a TGraph where the points are connected with arrows. The direction of the arrows should respect the order in which the points were added with TGraph::AddPoint. I think this is not an option for TGraphPainter. Do you have some suggestions on how to do this? or even better, a code draft to start? I’m unsure of which classes exists that could help me with this problem.

Thanks!

ROOT 6.24

[couet]

void paint_graph_with_arrows(TGraph *gr) {
   gr->Draw("AP");
   double *x = gr->GetX();
   double *y = gr->GetY();
   int n = gr->GetN();
   auto a = new TArrow();
   a->SetArrowSize(0.02);
   for (int i=0; i<n-1; i++) a->DrawArrow(x[i],y[i],x[i+1],y[i+1]);
}

void graph_arrows(){
   TCanvas *c = new TCanvas("c","Paint graph with arrows",700,500);

   const Int_t n = 10;
   TGraph *gr = new TGraph(n);
   gr->SetTitle("Paint graph with arrows");

   Double_t x, y;
   for (Int_t i=0;i<n;i++) {
      x = i*0.123;
      y = 10*sin(x+0.2);
      gr->SetPoint(i,x,y);
   }

   paint_graph_with_arrows(gr);
}

[jruizvid]

Thank you @couet. Also for answering so fast. This solution is exactly what I needed!