On the above basis , the frontal method and rectangle method are proposed , the relationships between memory spending for both methods and amount of nodes are given 据此,提出了有限元网格结点编号的前沿法与矩形法,并给出了这两种编号法的内存消耗与结点数量的关系。
It is reali zed that the invisible part of the object can be shadowed , using the max imum or minimum enveloping rectangle method and the counter of points of intersection method , etc . ( 3 ) the boolean operation between integrity or unintegrity bodys is supplied 分析并讨论了形体产生隐藏线、隐藏面的原因,利用了最大最小外包矩形法、交点记数法等,实现了任意形体的消隐算法。 ( 3 )完成了形体间的正则、非正则布尔运算。
In mathematics, specifically in integral calculus, the rectangle method (also called the midpoint or mid-ordinate rule) computes an approximation to a definite integral, made by finding the area of a collection of rectangles whose heights are determined by the values of the function.