3D visual simulation systems must present a world, including terrain, cultural features and 3D icons, in real-time at a level of detail which supports the use for which the system is intended.A "simple" world lends itself to blasting all the polygons through the workstation's existing graphics pipeline. However, a "simple" world is not very realistic and/or does not operate in realtime. For complex worlds, such as that modeled in NPSNET, providing high fidelity in real-time requires the use of hierarchical data structures. We explore the implementation of such a structure on the world modeled by NPSNET utilizing quadtrees.
The Laboratory for Human Interaction in the Virtual Environment at the Naval Postgraduate School is one of the leading groups for the comprehensive study of humans in the virtual environment. The lab builds on work completed by the NPSNET Research Group to push the edge of human interaction. The HIVE Lab is additionally working towards the acceptance of a Masters program for this work at NPS and is driving the creation of the da Vinci Consortium for the study of humans in the virtual environment.
The Naval Postgraduate School Networked Vehicle Simulator IV (NPSNET-IV) is a low-cost, student-written, real-time networked vehicle simulator that runs on commercial, off-the-shelf workstations (the Silicon Graphics IRIS family of computers). NPSNET-IV has been developed at the Naval Postgraduate School's (NPS) Department of Computer Science in the Graphics and Video Laboratory. It utilizes Simulation Network (SIMNET) databases and SIMNET and Distributed Interactive Simulation (DIS) networking formats. The DIS networking format is flexible enough to allow multiple players to game over the Internet. The availability of NPSNET-IV lowers the entry costs of researchers wanting to work with SIMNET, DIS, and follow-on systems. Without the contributions of the department's M.S. and Ph.D. candidates, the NPSNET project would be impossible to maintain and continue. The diversity of their interests accounts for the broad range of research areas within the project.
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