| 圆环面正轴测计算机绘图的数学模型 |
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| 引用本文： | 冯敬华,程军.圆环面正轴测计算机绘图的数学模型[J].中北大学学报,1989(4). |
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| 作者姓名： | 冯敬华 程军 |
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| 摘 要： | 本文运用图解法,在对圆环面正轴测投影的曲线性质进行投影分析的基础上,导出了圆环面正轴测投影外形线的参数方程;给出了产生尖点的几何条件和判别式;解决了尖点和虚实线分界点的定位问题.为圆环面正轴测投影的计算机绘图提供了可靠的数学依据.
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| 关 键 词： | 图解法 数学模型 曲线(图) |
MATHEMATICAL PATTERN FOR DRAWING THE ORTHOGRAPHIC AXONOMETRIC PROJECTION OF A TORUS WITH A COMPUTER |
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| Feng Jinghua Cheng Jun.MATHEMATICAL PATTERN FOR DRAWING THE ORTHOGRAPHIC AXONOMETRIC PROJECTION OF A TORUS WITH A COMPUTER[J].Journal of North University of China,1989(4). |
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| Authors: | Feng Jinghua Cheng Jun |
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| Affiliation: | Feng Jinghua Cheng Jun |
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| Abstract: | The authors have derived a prametric equation of the contour curve by the graphic method and through the analysis of its na- ture on the orthographic axonometric projection of a torus.In this paper a geometrical condition leading to the tip point and a dis- criminant is given,and the orientation of the tip point and dashed and real points of division is supplied.In addition,it is mathe- matically proved that there exists a practical possibility of drawing the orthographic axonometric projection of a torus with a computer. |
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| Keywords: | diagramming method mathematical models curves(graphs) |
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