Keeping an Even Polygon Flow
Another thing to avoid is having a mesh with different polygon
sizes. Some variation is normal and fine, but across a nice
sweeping curve you want to keep your polygons evenly
spaced; otherwise you’ll end up with pinching.
See how this looks like a ripple in a car door after it’s been in
an accident? By keeping your polygons flowing nice and even
you avoid this nasty pinching and can achieve a nice smooth
curve all the way around.
The curve in Figure 9-7 is a good example of polygon size
differences messing with your smoothing. These results come
from the way TurboSmooth works. TurboSmooth is adding
polygons based on your low-polygon model. The more poly-
gons on your low-polygon model, the denser the polycount on
the curve will be on these smaller polygons. This leads to
pinching. Remember, you only need a few edge loops in your
curve to get a nice smooth curve after you’ve used
High-Poly Modeling Basics 207
Figure 9-7: Left, incorrect polygon sizes; right, correct polygon sizes
Figure 9-8 is a perfect example of this:
The square became a circular shape! This is how few edge
loops you really need to create a nice smooth curve. Keeping
this in mind you can pretty much model with only a few poly-
gons and still have a nice smooth model as long as you turn
your iterations up to a reasonable level.
208 Chapter 9
Figure 9-8: Left, low-poly inset; right, high-poly inset

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