Point(1) = {0, 0, 0, 1.0};
Point(2) = {0, 1, 0, 1.0};
Point(3) = {1, 1, 0, 1.0};
Point(4) = {1, 0, 0, 1.0};
Line(1) = {1, 2};
Line(2) = {4, 3};
Line(3) = {2, 3};
Line(4) = {1, 4};
Line Loop(5) = {1, 3, -2, -4};
Plane Surface(6) = {5};
Transfinite Line {3}=7;
Transfinite Line {4}=3;
Transfinite Line {1,2}=3;
Recombine Surface {6} =45;
//Mesh.SubdivisionAlgorithm=1;

