选线时生成地面线效率的研究

摘要

Cross and vertical linkage design is needed during the design of the railway line selection.When a plane changes, the designers want to get real-time current line position of the undulation of the ground line.Ground line is the vector of the DWG topographic map after forming a triangular mesh,and cutting from the middle position.The topographic map data is of-ten relatively large,in order to ensure the smooth design,improved efficiency of generated ground line is a crucial step.%在进行铁路选线设计时，需要平纵断面联动设计。当平面发生变化时，设计人员希望实时获得当前线位下的地面线起伏情况。地面线是根据矢量化的 DWG 地形图，形成三角网后，和当前中线位置切割而成的；地形图的数据量往往比较大，为了保证设计的顺畅性，提高生成地面线效率是很关键的一步。