利用OpenGL实现三维有限元网格图的消隐显示

Realizing display of three-dimensional finite element meshes with openGL

利用三维有限元网格图形的性质和计算数据结构的特点，提出了一种新的立体网格图的绘制方法。该方法有效利用ＯｐｅｎＧＬ的深度缓冲机制，缩短了立体网格图的绘制时间，大大提高了消隐效率。该方法已应用于大型变压器三维电磁场计算软件中，对变压器剖分网格图的显示取得了良好的效果，并可对其进行平移、旋转、连续旋转、缩放等操作。

This paper presents a new plotting way for the pre- or-post processes of transformer FEM based on the graphic characteristics of three- dimensional finite element meshes and natures of digital structure adopted in FEM.This way has effectively applied depth-buffer mechanism of OpenGL,reduced time of drawing steric reseau, enhanced efficiency of blankoff This way has been applied to 3D Elecro magnetic Field Computation of Transformer, and its results is very good, Furthermore, it can realize translation, rotation, continual rotation and change of scale of the graphic.