基于辐射屏蔽体的建模及可视化研究

辐射屏蔽体可用直角三角柱、圆锥台体等一些基本的三维几何图形来描述。该文以直角三角柱、圆柱体为例说明了三维图形的建模及绘制过程。对于一次函数的几何图形，先确定其顶点的空间位置，然后由所定的顶点画出每个面，最后组合成三维实体。对于属于二次函数的图形，用空间解析法建立了数学模型。采用空间坐标变换法，在标准位置置上绘制二次函数的图形后，再转换到已知条件所定的位置来显示．可大幅度简化绘制过程。

The Modeling and Visual Research on Basic Radioactive Shield Configuration

Radioactive shield configuration can be described by some basic bodies such as right angle wedges and truncated right angle cones. In this paper, the process of modeling and rendering in 3D figures has been illustrated with the shield configurations of right angle wedges and truncated right angle cones. For the geometric figures of linear function, their vertexes in the space have been determined. Based on those points, the faces can be drawn, and then the 3D solid can be modeled. The mathematical model for quadratic functions has been built by space analysis. Using the method of space alternate coordinate, the figure can be displayed at the position assigned by the known conditions after the figure has been drawn at the standard position. The methods simplify the rendering greatly.