function tf = pointsinside(mx, my, pxa, pya, tolerance)

if length(pxa) == 1,
    tf = pointinside(mx,my,pxa,pya,tolerance);
else
    tf = pointinside(mx,my,pxa(1),pya(1),tolerance) && pointsinside(mx,my,pxa(2:length(pxa)),pya(2:length(pya)), tolerance);
end;