Advanced Techniques
Here we discuss more advanced and refined techniques to improve
mesh control and correct topology under specific circumstances.
Unmatched Vertices
Unmatched vertices occur when you need to weld two meshes that
do not have the same number of vertices. Earlier examples showed
how to weld matching vertices when attaching two objects. In this
section we see how to proceed when the number of vertices of each
object differs.
In this example we have two cylinders, one with eight seg-
ments and another with 10 segments. We start welding the vertices,
as shown in Figure 3-83.
At the end of the welding process, two vertices will be unconnected
because the lower cylinder has only eight vertices. This is a com-
mon problem when joining two pieces of geometry. We can insert a
vertex at the edge or create a vertex by cutting in the path of the
upper cylinder’s edge. This technique is commonly used when you
separately model parts of the body that must be joined in a later
modeling session, like hands, heads, or limbs.
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Chapter 3 – Polygon Subdivision
Figure 3-83
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