两点透视

1
two-point perspective
Two-point perspective(两点透视)：两点透视就是把立方体画到画面上，立方体的四个面相对于画面倾斜成一定角度时，往纵深平行的直线产生了两个消失点。
2
Tow-Point Perdpective
... 线透视 Linear Perspective 两点透视 Tow-Point Perdpective 鸟瞰图 Bird‘s Eye View ...

1
在手工绘制两点透视图时，都会碰到图幅过大造成灭点与视点落在图板之外而难以操作的难题。
By employing this, the two point perspective view can be completed with the auxiliary point even in the extremely difficult situation.
2
通过对空间任意点的透视模型进行分析，总结推论出两种行之有效的快速手工绘制两点透视图的方法。
Through analyzing the perspective model of arbitrary point in space, two practical and fast methods of drawing two-point perspective are concluded.
3
采用一个与视灭三角形相似的小三角形作为绘图辅助，同时结合量点法中的分量点概念进行作图，就可以很好地解决这个难题，而且能更加快速准确地绘制两点透视图。
This paper introduces the method of using a small triangle which is similar to the vision-vanishing point triangle to solve the problem, so that making perspective drawing more rapidly and precisely.

两点透视
如果建筑物仅有铅垂轮廓线与画面平行，而另外两组水平的主向轮廓线，均与画面斜交，于是在画面上形成了两个灭点Fx及Fy，这两个灭点都在视平线hl上，这样形成的透视图称为两点透视。正因为在此情况下，建筑物的两个立角均与画面成倾斜角度，故又称成角透视。属于美术名词。

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