libinventor1 binary package in Ubuntu Focal amd64

 This package contains the required files to run 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.
 .
 Recommended package xpdf is needed only to view help files.

Source package