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"Qu Qiao" Mentioned In Graphic Design

2008/8/14 14:13:00 41773

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It is very difficult to cut off a known exhibition plane from the paper without sticking it to the last surface without any change. It requires that the middle line and the bottom edge curve be completely coincided with the curved surface of the last surface.

If it is hard to attach, it is bound to appear in the tarsal and lumbar part of the flat surface.

In the process of graphic design, we know that after the last plane of the shoe last is restored and pformed, the result of the last test proves that it is basically consistent with the surface state of the last surface.

Why does the flat surface do not conform to the last change, and after reduction and pformation, it matches the last surface?

The reason is that the saddle shaped surface of the tarsus and the back of the last surface is a saddle shaped surface. During the flatten process of the last surface, it must undergo compression pformation to become the flat surface. If the compression volume is not added, the flat surface will be pressed on the last surface. It is necessary to create a breach at the tarsal and lumbar part, which is not consistent with the last surface.

When the exhibition plane is in the reduction pformation, after a triangle F F Q is added, the usual compression quantity is supplemented. At the same time, it is necessary to raise the J1 of the top plane to the J2 position. After this pformation, it can last last, see Figure 3.

The front toe of the flat surface has its inherent height J1Jn, which is called the front end of the flat surface. After the reduction pformation, the front end of the flat surface is changed, which is determined by the bending shape of the last surface. This is the basic concept of "Qu Qiao", that is, the origin of "Qu Qiao".

This change of seesaw degree will restore the flat surface to the test method of the last surface. In essence, it is the "curved handle" of the flat surface.

From this we can see that the reasons for the formation of koji are:

1. The pverse surface of the front part of the front face is twisted in the vertical direction during the flattening process, resulting in compression of the metatarsus and the waist part of the last surface.

2, when the last surface is reduced to pform, the compression amount must be added to the flattening pformation.

3, when one angle is added, the front stilts must be pformed at the same time, which produces the plane stilts that must be obtained in the last curved form, known as "Qu Qiao".