| 摘要 |
<p>This invention relates to a method of operating a virtual model manipulation system where in the virtual model manipulation systems includes a moveable visual display device, and a means to directly provide the user with the choice of reference point, the method of operating the virtual model manipulation system characterised by the step of displaying different orientating and/or views of a 3-dimensional model on the visual display device wherein the orientation and/or views are displayed are associated with the orientation and/or position of the visual display device.</p> |
