inventor-dev 2.1.5-10-21 (amd64 binary) in ubuntu focal

 This package contains the files required to develop Open Inventor
 applications.
 .
 Open Inventor is an object-oriented 3D toolkit offering a comprehensive
 solution to interactive graphics programming problems. It presents a
 programming model based on a 3D scene database that simplifies graphics
 programming. It includes a large set of objects such as cubes, polygons,
 text, materials, cameras, lights, trackballs, handle boxes, 3D viewers, and
 editors can speed up your programming and extend your 3D program's
 capabilities.