function face1 = reverse_orientation(face)
% reverse_orientation - reverse the orientation
% of the face of a mesh.
%
% face1 = reverse_orientation(face);
%
% Copyright (c) 2003 Gabriel Peyr
nface = size(face);
face1 = face;
for i=1:nface
f = face1(i,:);
face1(i,:) = f(3:-1:1);
end