Moving from V5.08to>V5.10 TArc is no more transparent

ROOT
1

Dear colleagues

I am puzzled because I am trying to draw TArcs
with Root V5.10.00 and above (5.12.0) and TArcs
that were transparent when compilling my lib.so
is now filled with White and no more transparent

my code is :
TArc *a = new TArc(xrho[2],yeta[2],0.16,180+ATan(yeta[2]/xrho[2])*180./Pi(),
360-ATan(yeta[2]/(1-xrho[2]))*180./Pi());a->Draw();// alpha
a = new TArc(1,0,0.22,180-ATan(yeta[2]/(1-xrho[2]))*180./Pi(),180);a->Draw();// beta
a = new TArc(0,0,0.20,0,ATan(yeta[2]/xrho[2])*180./Pi());a->Draw();// gamma

and the plot:

With Root V5.08.00:

lappweb.in2p3.fr/babar/people/Vi … 5.08.0.gif

and with Root version >5.10.0

lappweb.in2p3.fr/babar/people/Vi … 5.10.0.gif

Thanks in advance for help
Vincent

2

I cannot run your code because it is not complete. I tried to simulate the problem with something simple. The following macro draws a line and a TArc on top. For me it works fine: one can see the line below the arc. The arc is transparent. Do you have the problem with my little example ?

{
   TCanvas *c1 = new TCanvas("c1", "c1",15,47,700,530);
   c1->Range(0,0,1,1);
   c1->SetBorderSize(2);
   c1->SetFrameFillColor(0);
   TLine *line = new TLine(0.3,0.8,0.6,0.4);
   line->Draw();
                                                                                
   TArc *arc = new TArc(0.4,0.6,0.1,0,360);
   arc->Draw();
}
3

Dear Olivier

In fact I face added explicitly a->SetFillStyle(0);

but I was able to run your Macro without any problem
in both versions

regards
Vincent

4

So, is it ok now for you ?