b.exception.add(new Point2I(15, 15));
b.exception.add(new Point2I(15, 16));
b.exception.add(new Point2I(16, 15));
IConeFovAlgorithm a= new ConePrecisePremisive();
a.visitConeFieldOfView(b, 10, 10, 10, startAngle, finishAngle);
b.mark(10, 10, '@');
b.print(-1, 21, -1, 21);
System.out.println("visitederr "+b.visiterr);
a= new ShadowCasting();
b.visited.clear();
a.visitConeFieldOfView(b, 10, 10, 10, startAngle, finishAngle);
b.mark(10, 10, '@');
b.print(-1, 21, -1, 21);
// IFovAlgorithm a1= new ShadowCasting();