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From $ROOTSYS/tutorials/graphics/ellipse.C

//Draw ellipses
//Author: Rene Brun
{
   c1 = new TCanvas("c1");
   c1->Range(0,0,1,1);
   TPaveLabel pel(0.1,0.8,0.9,0.95,"Examples of Ellipses");
   pel.SetFillColor(42);
   pel.Draw();
   TEllipse el1(0.25,0.25,.1,.2);
   el1.Draw();
   TEllipse el2(0.25,0.6,.2,.1);
   el2.SetFillColor(6);
   el2.SetFillStyle(3008);
   el2.Draw();
   TEllipse el3(0.75,0.6,.2,.1,45,315);
   el3.SetFillColor(2);
   el3.SetFillStyle(1001);
   el3.SetLineColor(4);
   el3.Draw();
   TEllipse el4(0.75,0.25,.2,.15,45,315,62);
   el4.SetFillColor(5);
   el4.SetFillStyle(1001);
   el4.SetLineColor(4);
   el4.SetLineWidth(6);
   el4.Draw();
   return c1;
}
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