圆锥截断的正轴测投影图CAG

应用本文推导的数学模型及所设计的程序,解决了教学和工程绘图中在圆锥上截切出圆锥曲线的正轴测投影的计算机辅助绘图问题。该法可绘出任意位置任意大小的圆锥截断的正轴测投影图,对完整的椭圆还能自动画出其长短轴,可供教学绘图和工程绘图中应用。

THE ORTHOGONAL AXONOMETRIC PROJECTION CAG OF THE CIRCULAR CONE'S CUT

This paper describes the solution of the computer aided graphics problem of the orthogonal axonometric projection of the conic section cut on the circular cone. It is a very difficult problem in mathematics and engineering graphics. The author resolves this problem by ingenious mathematical models and a simple and convenient program. The distinguishing features of this paper are as follows: drawing the orthogonal axonometric drawing the cut of an arbitary position circular cone; drawing the major axis and minor axis of an ellipse automatically if the ellipse is full. This paper contributes a more applicable solfware to teaching drawing and engineering drawing.