[Gmsh] Adaptive meshing with background mesh

[Martin Vymazal]

Dear gmsh users,

  I created a simple geo file defining a unit circle. I would like to  
mesh this circle using a background mesh which contains function  
values of a scalar function 0.2*(1.0-x^2-y^2) + 0.05 on the same  
domain (unit circle). When I run gmsh, I get a lot of errors messages  
of the form

   'No element found containing point (-0.245823,-0.932683,0)'

The resulting mesh seems to be more or less uniform as if the  
background mesh was completely ignored. I attached my files to this  
email. Does anyone know what am I doing wrong? Thank you for any help.

Best regards,

    Martin Vymazal


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//-*- C++ -*-
/*********************************************       
Circle in 2D: 
**********************************************/     
Merge "ParabolicProfile.pos";

// Apply the view as the current background mesh
Background Mesh View[0];
  
lc = 2.0;
R = 1.0; 

Point(0) = {0, 0, 0, lc}; 
Point(1) = {R, 0, 0, lc}; 
Point(2) = {0, R, 0, lc};
Point(3) = {-R, 0, 0, lc};
Point(4) = {0, -R, 0, lc};

Circle(1) = {1,0,2};
Circle(2) = {2,0,3};
Circle(3) = {3,0,4};
Circle(4) = {4,0,1};

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