/// <summary>
/// Add a geometrical point in the built-in CAD representation, at coordinates
/// (`x', `y', `z'). If `meshSize' is > 0, add a meshing constraint at that
/// point. If `tag' is positive, set the tag explicitly; otherwise a new tag
/// is selected automatically. Return the tag of the point. (Note that the
/// point will be added in the current model only after `synchronize' is
/// called. This behavior holds for all the entities added in the geo module.)
/// </summary>
public static int AddPoint(double x, double y, double z, double meshsize = 0, int tag = -1)
{
var index = Gmsh_Warp.GmshModelGeoAddPoint(x, y, z, meshsize, tag, ref Gmsh._staticreff);
Gmsh.CheckException(MethodBase.GetCurrentMethod().MethodHandle);
return(index);
}