汽车效果图的一种简捷画法

A Simple Pictorial Drawing of A Car

该文提供了一种简捷的绘制汽车效果图的方法。根据汽车这一特定对象和它的特殊条件，除给出常见的点列Ａ（ｘ，０）、Ｂ（０，ｙ）的透视比例尺外，还给出了点列Ｃ（ｘ，ｙ）的透视比例尺。文中利用射影几何中射线比的特殊性质，解决了透视灭点在图板外的透视图画法。根据汽车的常见尺寸数据，绘出汽车的框架图。如作进一步着色和加阴影。

A simple pictorial drawing of a car is presented in this paper. According to the specific object and special conditions of a car, the perspective scale of the sequence of point C(x,y ) is given besides the perspective scale of the normal sequence of points A(x,0) and B(0,y) . According to the nature of projective scale, it has solved the problem of drawing a cars perspective when perspective vanishing point is out of the drafting board. In the end of this paper, a diagram of a car is drawn in its normal size. A pleased pictorial drawing of a car will be obtained when colored and shaded.