Διαχείριση σκηνής

Abstract

Σχεδίαση σκηνής, γράφοι σκηνής, βελτιστοποίηση, παραδείγματα

This chapter studies the concepts, applications, and implementation of 3D graphics scene management systems. By the term "scene," we refer to the set of 3D objects and the relationships between them that describe the depiction of a virtual 3D world. Initially, it is explained how abstract structures can be used to describe complex objects and their relationships. Next, most common ways to organize the information contained in a 3D scene through the use of various structures (e.g. tree and graph structures) are being presented. With the knowledge of these structures, this chapter proceeds to describe the methods of organizing a scene into a graph as well as how we can programmatically implement such structures. Moving beyond scene organization, the importance of object visibility in a scene and how it affects the complexity of processing is being discussed. To reduce the complexity of a scene, various methods will be studied to divide the scene and create a responsive system for the visibility of the virtual objects. Finally, how the processes of scene partitioning and rendering can be distributed across multiple computational units will be described.