| 分区动态地形的一种时序模型 |
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| 引用本文： | 陈国军, 赵沁平. 分区动态地形的一种时序模型[J]. 计算机研究与发展, 2006, 43(5): 908-913. |
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| 作者姓名： | 陈国军 赵沁平 |
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| 作者单位： | 1(北京航空航天大学计算机学院 北京 100083) 2(中国石油大学计算机与通信工程学院 东营 257061) (gjchen@mail.hdpu.edu.cn) |
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| 基金项目： | 科技部科研项目;北京市自然科学基金 |
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| 摘 要： | 在分布式虚拟环境中，地形因实体作用发生变化.为了使各仿真节点的地形数据保持一致，需要对各节点变化的数据时序化.根据地形局部变化特点，构造了多分区动态地形的时序模型.模型把子区域地形几何数据定义为单纯复合形集，按地形变化时间顺序和空间关系组织成一个偏序集.模型支持地形变化数据动态添加，指定时刻的地形提取.实验表明，基于DAG表示的地形抽取算法利用变化数据间的空间关系提高了计算性能.
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| 关 键 词： | 动态地形 单纯复合形 时序模型 虚拟环境 分布式交互仿真 |
| 收稿时间： | 2005-04-27 |
| 修稿时间： | 2005-04-272005-09-15 |
A Time Serial Model for Divisional Dynamic Terrain |
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| Chen Guojun, Zhao Qinping. A Time Serial Model for Divisional Dynamic Terrain[J]. Journal of Computer Research and Development, 2006, 43(5): 908-913. |
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| Authors: | Chen Guojun Zhao Qinping |
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| Affiliation: | 1(School of Computer Science, Beihang University, Beijing 100083) 2(College of Computer and Communication Engineering, China University of Petroleum, Dongying 257061) |
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| Abstract: | In distributed virtual environment ,terrain can be changed as a result of the interaction between the entity and the terrain. To maintain consistency and reliability of the simulation it is required to serialize and arbitrate terrain changes. A time serial model for divisional dynamic terrain is built according to terrain local modifications. The model is based on a collection of a divisional terrain data defined as simplicial complexes arranged into a partially ordered set by time and space. Features of the model are to provide an insertion of terrain modification and an extraction of terrain at a particular moment. Experimental results on real terrain data show that the algorithm based on one DAG improves the computing performance of an extraction of terrain. |
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| Keywords: | dynamic terrain simplicial complexes time serial model virtual environment distributed interactive simulation(DIS) |
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