The Real-time Rendering Of Large-scale Terrain Algorithm Research Oriented By The Battlefield Simulation Platform

In the application of virtual battlefield simulation,terrain visualization is an important part of virtual battlefield simulation.With the rapid development of computer science and technology,the scene scale of virtual battlefield simulation needs larger,and the requirement of large-scale terrain rendering is more and more strictly.For the requirements of the application of the virtual battlefield simulation,for large-scale terrain data organization model,scheduling algorithm and the real-time rendering algorithm and details of the generating process of key technologies were studied and realized the rendering algorithm,and through the experiment to verify the algorithm’s efficiency,authenticity and practicality.On the basis of this algorithm,the visualization of large scale terrain scene is realized.Finally,a large scale terrain scene has been completed,and the 3D scene visualization of large scale virtual battlefield simulation platform is realized.The main work done in this paper and the main results obtained are as follows:(1)In view of the large scale terrain data cannot be stored in the system memory,this paper uses a data organization model based on the four fork tree.In order to solve the problem of the internal and external storage scheduling of large scale terrain data and the stability of the terrain rendering,this paper proposes a smooth LRU terrain scheduling algorithm based on the four fork tree.Experiments show that the scheduling algorithm can effectively improve the stability of the terrain rendering,and can effectively solve the problem of terrain data organization and scheduling.(2)In-depth study based on view dependent terrain rendering algorithm,the efficiency of the terrain in low,storage etc.,this paper presents a perspective based on improved LRU terrain rendering algorithm and the improvement of the algorithm is mainly reflected in the down sampled into the terrain and building a terrain block quad-tree index for fast retrieval,and construct the resolution node evaluation function for culling algorithm.Through the test analysis confirmed that the algorithm and view dependent terrain rendering algorithm compared,has the functions of drawing speed,high fidelity and real-time,low frame rate and other characteristics.Realize the visualization of large-scale terrain scene,so that it has high efficiency,authenticity and real-time performance.(3)Based on the above research results,a virtual battlefield simulation platform is designed,which is based on the large scale terrain.By configuring the simulation script,the user can carry out the situation operation deduction,so as to analyze the rationality of the operation plan,and to test the effectiveness of the plan.For its accession to the sea,the sky box,light and other effects,it is good to improve the authenticity of the scene.