a custom surface for sampling.
 

So, I am running this openfoam simulation and I need areaAverage velocity and pressure on a surface,currently the entire plane is being read, I wan't to specify my own in sampleSurfaceDict,

new_plane
{
type faceSource;
functionObjectLibs ("libfieldFunctionObjects.so");
enabled true;
outputControl timeStep;
log true;
valueOutput true;
source sampledSurface;
//setFormat raw;
surfaceFormat vtk;


sampledSurfaceDict
{
type plane; // always triangulated
basePoint (0 -1.5 0);
normalVector (0 -1 0);
}
operation areaAverage;
fields
(
p
U
);
}


is there a type circle? or a way to specify radius? in sampledSurfaceDict

sampledSurfaceDict
{
type plane; // always triangulated
basePoint (0 -1.5 0);
normalVector (0 -1 0);
}

I don't have any access to software which can produce stl for 2D/3D surfaces. triSurfaceMesh needs that.