TR-C-0083 :1993.1.25

アランシャネゾン,竹村治雄,北村喜文

Interactions between objects in a virtual space

Abstract:This report describes a method to enable a manipulator in a virtual world to release an object on a surface without any force feed-back tool. The system does not require any command to learn and works in real time. When a grabbed object comes too close to another, it is attracted. A distance between objects was designed to enable this calculation. It was based on a distance between faces. But the number of faces of the world being to big to reach real time calculation, simplifications had to be done. We designed "attracted faces" as faces on which an object can lie and "attracting faces" as faces which can attract objects. The calculation using only these faces can be done in real time. Thanks to this interface, a manipulator who grabs an object can move it on some predefined planes (as for some example the top of a table) and control the position where he releases it. A first experiment showed that the interface is all the more useful than the action has to be precise.