Open Inventor supports collision detection. It is possible to manage objects and camera transformations to prevent objects from passing through (intersecting) one another. Walls are really walls: you can avoid walking through them. Solid objects are really solid: you can avoid having two of them occupy the same space at the same time.
Three tools are provided to support collision detection in Open Inventor:
Viewer collision detection ( Section 22.2, “Viewer Collision Detection”).
Intersection detection action ( Section 22.3, “ Intersection Detection Action”).
Dual scene collider ( Section 22.4, “Dual Scene Collider”).