By interacting with a graphical user interface, a user may easily confirm, set and change a valid region of a sensor node which is associated with an object in a three-dimensional virtual space. When a user clicks on and selects an object displayed on a display screen by using a mouse, model editing...http://www.google.de/patents/US6262734?utm_source=gb-gplus-sharePatent US6262734 - Graphic data generating apparatus, graphic data generation method, and medium of the same
