Regarder bien les brevets que j´ai mit !! !
le point 21 du deuxieme brevet par exemple :
21. The memory medium according to claim 17, further comprising rotating the viewpoint about a rotation center, which is obtained by
PROJECTING
previously determined viewpoint coordinates perpendicularly onto a horizontal plane including the sight point in the three-dimensional space, and generating a display of an image indicating the three-dimensional space so as to be tilted to the right when it is detected that the housing is tilted to the right based on the output signal from the tilt sensor, and rotating the viewpoint about the rotation center and generating a display of an image indicating the three dimensional space so as to be tilted to the left when it is detected that the housing is tilted to the left based on the output signal from the tilt sensor.
si sa c´est pas un projecteur !! !!!!