The Geometry object provides an API for the Geometry tree object.

To access the Geometry object:

geometry = Model.Geometry

The Geometry object exposes several convenient methods for adding child objects. For example, you can add a point mass to the Geometry object by calling the method AddPointMass.

point_mass = geometry.AddPointMass() 

For this point mass, you can assign a location:

my_selection = ExtAPI.SelectionManager.CreateSelectionInfo(SelectionTypeEnum.GeometryEntities) 
my_selection.Ids = [22] 
point_mass.Location = my_selection 

For the above point mass, accessible properties include:

point_mass.Mass = Quantity("12 [kg]") 
point_mass.MassMomentOfInertiaX = Quantity("1.1 [kg m m]")
point_mass.MassMomentOfInertiaY = Quantity("1.2 [kg m m]")
point_mass.MassMomentOfInertiaZ = Quantity("1.3 [kg m m]")
point_mass.Behavior = LoadBehavior.Coupled
point_mass.PinballRegion = Quantity("0.2 [m]")

Combining the three previous actions, the geometry now contains a fully defined point mass.

You can export the Geometry object to an STL (STereoLithography) file, which is the most commonly used file format in 3D printing. The following command exports the geometry object to an STL file.

Model.Geometry.ExportToSTL("C:\Temp\geoasstl.stl")

The result is the creation of a geometry file (geoasst1.stl) to the fully qualified directory path (C:\Temp).