南水北调与水利科技
南水北調與水利科技
남수북조여수리과기
SOUTH-TO-NORTH WATER
2009年
6期
102-104,210
,共4页
双层网格%渠道%地面网格模型
雙層網格%渠道%地麵網格模型
쌍층망격%거도%지면망격모형
double-mesh surface%channel%surface mesh model
将网格分成内部网格和外部网格两个层次,以适用于渠道设计这种不规则带状地形的应用.算法将渠道经过的地面模型划分成大小相等的正四边形外部网格,对于每个有地形数据点的外部网格进一步划分成小的内部网格.这样可以利用网格坐标和顶点高程,实时计算任意点地面高程.
將網格分成內部網格和外部網格兩箇層次,以適用于渠道設計這種不規則帶狀地形的應用.算法將渠道經過的地麵模型劃分成大小相等的正四邊形外部網格,對于每箇有地形數據點的外部網格進一步劃分成小的內部網格.這樣可以利用網格坐標和頂點高程,實時計算任意點地麵高程.
장망격분성내부망격화외부망격량개층차,이괄용우거도설계저충불규칙대상지형적응용.산법장거도경과적지면모형화분성대소상등적정사변형외부망격,대우매개유지형수거점적외부망격진일보화분성소적내부망격.저양가이이용망격좌표화정점고정,실시계산임의점지면고정.
In this Paper, the surface mesh will be divided into a grid of internal and external mesh grid at two levels to suitable for the design of such irregular channel strip topography applications. The ground channel model was divided into equal size of the external quadrilateral grid by the algorithm. If there were data points in the external grid, then the terrain further was divided into small grids within the grid. This method could be used in grid coordinates and vertex elevation to calculate the ground elevation at real-time.
