[Gmsh] Plane Surface Error

David Colignon David.Colignon at ulg.ac.be
Fri Jul 31 10:34:49 CEST 2009


Hi Mike,

are you sure that the 4 points are really coplanar ? If yes, then it is a numerical precision problem.

Whatever the reason, just replace "Plane Surface" by "Ruled Surface" and it will be OK

Cheers,

Dave

-- 
David Colignon, Ph.D.
Collaborateur Logistique du F.R.S.-FNRS
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Mike B. wrote:
> Dear Gmsh users,
> 
> I define a simple plane surface with:
> Point( 1001 ) = { -00000.250, +00000.000, +00000.000 };
> Point( 1002 ) = { -00000.150, +00000.000, +00000.057 };
> Point( 2001 ) = { -00000.206, +00000.100, +00000.036 };
> Point( 2002 ) = { -00000.111, +00000.100, +00000.092 };
> Line( 1011 ) = { 1001, 1002 };
> Line( 1012 ) = { 1002, 2002 };
> Line( 1013 ) = { 2002, 2001 };
> Line( 1014 ) = { 2001, 1001 };
> Line Loop( 1001 ) = { 1011, 1012, 1013, 1014 };
> Plane Surface( 1001 ) = { 1001 };
> 
> but Gmsh reports the following error:
> Plane Surface 1001 (...) is not a plane!
> Error: Control Point 1001 = (-0.25,0,0), val = -0.00039966
> 
> Any suggestions?.
> 
> Thanks,
> Mike.
> 
> 
> 
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