屏蔽体的三维模型的读取和可视化研究

为了解数据文件所描述的辐射屏蔽体结构和分布，用OpenGL编写了可视化仿真程序。首先可将数据文件的数据转换成OpenGL编程所需的格式，然后用空间坐标变换法将基本几何形状的数学模型简化成标准型。图形在标准位置上被绘制后，通过坐标平移和旋转可转换到给定位置上进行显示，从而可大幅度简化绘制过程。绘制的图形能用正投影和透视投影法在两种不同的坐标系上显示。图形的着色和光照可通过菜单、对话框来变更，图形的移动和旋转可由键盘和民标的操作来控制，提示了一个包含400多个数据的数据文件所描述的屏蔽组合体的绘制实例。

Readout and visual research for radioactive shield configuration

The visual simulation programs are written by OpenGL to understand the construction and distribution of the radioactive shield configuration provided by the data file. At first, the data can be read out from the data file and transformed into the form of OpenGL. Then the method of space-alternate-coordinate is used to simplify the mathematic models of the basic geometry into the standard models. Having been shifted and revolved the coordinate, the configuration is shown at the designative place decided by known conditions. So the rendering of configuration can be simplified greatly. The shield configuration can be shown in two distinct coordinate systems by orthography and perspective projection. The coloring and lighting of the configuration can be modified with the menu and dialogic frame. The move and revolution of the configuration can be controlled through the operation of the keyboard and wheel mouse. As an example, the shield configuration based on the date file containing above 400 data is shown in this paper.