Research And Implementation Of OpenGL-Based Scene Simulation For Underwater Weapons

Scene simulation is an important branch of Virtual Reality, and it is applied much more in the research of land weapon system. But the research on scene simulation of underwater weapon is seldom in our country. The 3D scene simulation is established to show the locations of moving underwater entities, and this will help commander to make accurate determinations more effectively.One method of organizing all scene data with the tree hierarchy is described in this paper, and it reflects the subjection relations of each element clearly. One conversion and mapping model of graphics data is established considering the reality request of simulation. The underwater illumination model is given. Besides, naval ships battle track model, recovery model and weapon attacking model are given as the foundation of underwater weapon simulation.The advantages and shortages of several geometry modeling methods based on OpenGL are analyzed. And the author uses 3D MAX software to establish simulation models and then transforms them to OpenGL code. The requirement of underwater weapon scene simulation is analyzed and its architecture is designed.One image-based collision detection algorithm of convex polyhedra is presented. The method of scanning objects speedily by using the hardware buffer is illustrated, and this kind of algorithm is especially fit for the collision detection of many objects moving irregularly in the scene.The technologies of real-time scene creation and display are utilized for the implementation of system. The underwater moving entities can be observed visually and the simulation of weapon attacking course and sea environment will help decision-maker evaluate and research the condition of underwater weapons.