Generating a `quad`-only mesh

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1

I am trying to generate a mesh that consists of only quads (4-noded). Is this supported in NetGen ?

geo = SplineGeometry()
geo.AddRectangle(
    p1 = (0.,0),
    p2 = (2.,4),
    leftdomain = 1,
    rightdomain = 0
)
geo.AddCircle(
    c = (1.,2),
    r = 0.5,
    leftdomain = 0,
    rightdomain = 1
)

ngmsh = geo.GenerateMesh(maxh=0.1,quad_dominated= True)

However this generates of course meshes with both triangles and quads, with the latter “dominating”.

2

Quad only meshing is currently only supported for very easy geometries that can be mapped from a reference triangle by creating structured meshes in the module ngsolve.meshes.
Sorry, quad only meshes for arbitrary geometries are not implemented (and afaik not attempted to)