基于Direct3D的虚拟战场环境中动态地形的实现方法

Direct3D-based Dynamic Terrain Realization in Virtual War Environment

动态地形技术突破了以往地形结构不可破坏的限制,能够体现环境自身的内力作用和仿真实体的行为对环境的作用而引起的地形结构的变化[1],拉近了仿真与现实之间的距离。以最常用的不规则地形网格为研究对象,提出了通过建立“参照网格”来规则化的管理不规则网格的方法,分析了Direct3D环境中地形数据库的存储格式,给出了确定地面上任意一点在地形网格中的投影位置的遍历方法,基于以上,通过修改地形数据库内存数据实现地形外观的局部修改。

Dynamic Terrain technology breaks through the destructible restriction of the traditional terrain surface. It can exhibit the change of the terrain structure that caused by internal force of environment or by the behavior of simulation entities, thus shortening the distance between simulation and the reality. It is focused on the study of Triangulated Irregular Network-TIN, and a TIN managing method via building a Reference Network is introduced. It is analyzed the storage format of Terrain Database in Direct3D environment, articulating the searching method to locate the projection position in Terrain networks of any ground surface point. Based above, changing terrain surface appearance can be realized via modifying terrain database that stored in memory.