Circle resolution/approximation

General Discussion
1

My mesh is dense, but circle boundary doesn’t correspond to mesh by resolution. Can circle boundary be more round?

CircleResolution
CircleResolution980×799 60.6 KB

2

If you are creating the geometry using the FreeFem commands border + buildmesh, then just prescribe more points for the corresponding border.

3

I use 320 points for border “wire” (non-meshed area). Do i have to introduce point number at border definition stage?

int nwire = 320;
border wire(t=0.0, 2pi){x=rcos(t); y=h+r*sin(t); label = ground2;}
mesh amesh = buildmesh(
wire(-nwire)+left(-nside)+right(nside)+top(-nsky)+bottom(nground)
);

4

I think this solution should work.