[Gmsh] BoundaryLayer: meshing of curves takes very long

[Nico Schlömer]

Hi all,

when meshing a domain that contains BoundarLayers, the meshing of the
curves takes much longer then the meshing of the surfaces. Is there a way
to speed this up?
The following exampple highlights the problem:

================== *snip* ==================
Point(1) = {0, 0, 0};

Point(2) = {1, 0, 0};

Point(3) = {0, 1, 0};



Line(1) = {1, 2};

Line(2) = {2, 3};

Line(3) = {3, 1};



Line Loop(4) = {1, 2, 3};

Plane Surface(5) = {4};



Field[1] = BoundaryLayer;

Field[1].EdgesList = {2};

Field[1].hfar = 0.05;

Field[1].hwall_n = 0.001;

Field[1].hwall_t = 0.001;

Field[1].ratio = 5.0;

Field[1].thickness = 0.1;

Field[1].AnisoMax = 100.0;



Background Field = 1;
================== *snap* ==================

Output:

================== *snip* ==================
$ gmsh -2 boundary.geo
Info    : Running 'gmsh -2 boundary.geo' [Gmsh 2.6.2, 1 node, max. 4
threads]
Info    : Started on Mon Jul  8 21:51:43 2013
Info    : Reading 'boundary.geo'...
Info    : Done reading 'boundary.geo'
Info    : Meshing 1D...
Info    : Meshing curve 1 (Line)
Info    : 299998 points found in points clouds (1 edges)
Info    : Meshing curve 2 (Line)
Info    : Meshing curve 3 (Line)
Info    : Done meshing 1D (10.516 s)
Info    : Meshing 2D...
Info    : Meshing surface 5 (Plane, Delaunay)
Info    : Done meshing 2D (0.684 s)
Info    : 11332 vertices 22665 elements
Info    : Writing 'boundary.msh'...
Info    : Done writing 'boundary.msh'
Info    : Stopped on Mon Jul  8 21:51:55 2013
================== *snap* ==================

Cheers,
Nico
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