Hi rooters,
In the following macro I create the TPolyLine3D consisting from 2
points. If I do l->Draw() it draws "-" as expected.
After saving to file and restoring it draws "L" instead where the 3-d
point is 0,0,0.
Seems very strange, because l->Print() gives 2 points as well.
--------------------------------------l.C--------------------
TCanvas sky( "sky", "???", 300, 10, 700, 500 );
void w()
{
Float_t p[2][3] = {1,1,1,2,1,1};
TPolyLine3D *l = new TPolyLine3D(2,p);
TFile f("l.root","RECREATE");
l->Write("l");
f.Write();
f.Close();
TView *v = new TView(1);
v->SetRange(0,0,0,3,3,3);
l->Draw();
}
void r()
{
TFile f("l.root");
l->Print();
TView *v = new TView(1);
v->SetRange(0,0,0,3,3,3);
l->Draw();
Float_t *p = l->GetP();
for(int i=0; i< l->GetN(); i++)
printf("%d %f %f %f\n", i,p[3*i+0],p[3*i+1],p[3*i+2]);
}
-------------------------------------------------------------------
Output is:
root [0] .L l.C
root [1] w()
root [2] r()
TPolyLine3D Printing N=2 Option=
0 1.000000 1.000000 1.000000
1 2.000000 1.000000 1.000000
root [3]
Regards
Valeri
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