The section is devoted to measuring the geometric characteristics of the constructed geometry.
Since the concepts of density and scale are very ephemeral for the computational library, all calculations are carried out in arbitrary units. Converting values to the si system requires additional calculations.
Shape has a number of methods for querying geometric information.
shape.center() -> point3 shape.cmradius() -> vector3
Center of mass.
shape.mass() -> float
Matrix of inertia.
shape.matrix_of_inertia() -> matrix33
shape.static_moments() -> float, float, float
Moment of inertia about the axis.
Radius of gyration.
Measuring body systems