可视地形上叠加数字线划图的设计与实现

DESIGN AND IMPLEMENTATION OF ADDING DLG ON THE VISUALIZATION TOPOGRAPHIC MAPS

基于目前铁路设计多是在二维地形图上进行的事实,本文叙述了利用设计部门现有的资料,构建约束的Delaunay三角网(CDT)及三维显示的过程,并提出了结合2D地形图的快速查询功能,将数字线划图(DLG)叠加到三维地形图上的方法来辅助铁路线路设计。最后给出实例证明了该方法的可行性。

Based on the fact of engineering design of railway has been implemented on two-dimensional topographic map, using the datum of designing department, this paper dwells on the construction of CDT and the visualization of 3D topographic maps. Combining the advantage of 2D topographic map in fast query, a technique has been put forward to adding DLG on 3D topographic map to realize railway engineering design. In the end, a applied example was given to prove the feasibility of the method.