摘要
本文研究用正负法绘制空间曲面f(x,y,z)=0与柱面h(x,y)=0的交线在三个坐标平面上的投影曲线的方法。它能产生高精度的曲线,并由此,可以求得二元函数Z=ψ(x,y)在约束条件h(x,y)=0下的极值。
In this article based on the Positive-Negative Algorithm for drawing graph with digital plotter, we propose and study a curve plotting method, which gives the project curves in three coordinate planes of the intersection curve of spatial surface f(x,y,z) = 0 and cylinder h(x,y)=0. The accuracy of resulted project curves is high. The proposed method also can be used to find the extra values of z=ψ(x, y) under restraint h(x, y) = 0.
关键词
空间曲线
投影曲线
计算机
绘图
Spatial curve, Project curve, Computer, Draw
