Mass a = Mass(center=(0,0));
Mass b = Mass(center=(2u,1u), Label("$m_b$", align=N));
Mass c = Mass(center=(1u,-2u), Label("$m_c$", align=E));
-Mass ms[] = {a,b, c};
-Distance dab = Distance(b.center(), a.center(), scale=u,
- L=Label("$r_{ab}$", embed=Shift));
-Distance dac = Distance(a.center(), c.center(), scale=u, L="$r_{ac}$");
+Mass ms[] = {a, b, c};
+Distance dab = Distance(a.center(), b.center(), scale=u,
+ L=Label("$r_{ab}$", align=N, embed=Shift));
+Distance dac = Distance(a.center(), c.center(), scale=u,
+ L=Label("$r_{ac}$", align=RightSide));
Distance ds[] = {dab, dac};
Angle bac1 = Angle(
b.center(), a.center(), c.center(), radius=.7u, fill=red, L="$\theta_T'$");