[Gmsh] GMSH fails to mesh cube with second order triangles

[David Colignon]

On 11/12/09 12:34, Michael Carley wrote:
> Hello all,
> I am trying to mesh a cube surface with second order triangles. The
> first order mesh is fine, but the second order hangs. I am using the
> downloaded Linux binary of gmsh 2.4.2 and my input geometry is:
>
> lc = 1.0 ;
>
> Point(1) = {-1,-1,-1,lc} ;
> Point(2) = { 1,-1,-1,lc} ;
> Point(3) = { 1, 1,-1,lc} ;
> Point(4) = {-1, 1,-1,lc} ;
> Point(5) = {-1,-1, 1,lc} ;
> Point(6) = { 1,-1, 1,lc} ;
> Point(7) = { 1, 1, 1,lc} ;
> Point(8) = {-1, 1, 1,lc} ;
> Line(1) = {4, 8};
> Line(2) = {8, 7};
> Line(3) = {7, 3};
> Line(4) = {3, 4};

*********************
> Line(5) = {1, 1}; *
> Line(6) = {1, 1}; *
*********************

Hi Michael,

you have two zero length line here !

Regards,

Dave

-- 
David Colignon, Ph.D.
Collaborateur Logistique du F.R.S.-FNRS
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> Line(7) = {1, 5};
> Line(8) = {5, 6};
> Line(9) = {6, 2};
> Line(10) = {2, 1};
> Line(11) = {1, 4};
> Line(12) = {8, 5};
> Line(13) = {6, 7};
> Line(14) = {3, 2};
> Line Loop(15) = {4, 1, 2, 3};
> Plane Surface(16) = {15};
> Line Loop(17) = {4, -11, -10, -14};
> Plane Surface(18) = {-17};
> Line Loop(19) = {14, -9, 13, 3};
> Plane Surface(20) = {-19};
> Line Loop(21) = {2, -13, -8, -12};
> Plane Surface(22) = {-21};
> Line Loop(23) = {1, 12, -7, 11};
> Plane Surface(24) = {-23};
> Line Loop(25) = {8, 9, 10, 7};
> Plane Surface(26) = {-25};
>
>