EFFICIENT RENDERING THAT USES USER-DEFINED ROOM AND WINDOW

摘要

PROBLEM TO BE SOLVED: To provide a flexible rendering technique that can be adjusted to meet requirements corresponding to various complexity and characteristics which are seen in a present-day three-dimensional model and a scene by utilizing a user-defined room equipped with a mechanism which enables a user to define >=1 room. SOLUTION: The user is enabled to define >=1 room A. The room A is the area of a space such as a solid cell related to an object which is possibly seen when a camera is put in the room. The room A is different from an object representing a scene. The object is a set of primitives corresponding to meaning subsets of the scene. A preliminary process step checks whether or not there is the camera in the room and decides objects of the scene that are possibly visible on condition that the camera is in the room. Only the objects 401 to 403, which are visible from inside the room are drawn for display.