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In this chapter, we're looking at subdivision surface modeling. Subdivision surfaces are very powerful technique for achieving organically curved shapes with the traditional Polygon modeling tools. So all the polygon modeling tools that you've become accustomed to from Editable Poly can now be leveraged to create these more sophisticated curved models. So this is an example of a modern bar stool in which the seat of this stool has been constructed with subdivision surfaces.
And what you'll see in the Modifier panel is the structure of the subd surface. It starts out with an Editable Poly. I've got Show end result turned off, so we can see the structure of this. We're getting little bit closer, and press the J Key to hide those selection brackets. Press the F4 key so we can see those edges. So this is the Polygon Mesh that is then subdivided to create the nice smooth curved surface that we saw. It's also using a Symmetry Modifier here.
So let's turn Show end result off again. We've also got Symmetry so that we can get the other half for free so we don't have to model both sides. And then, above that I've got TurboSmooth. And TurboSmooth is what's softening this up and subdividing the surface. So subDs are really powerful, because they give you the ability to shape a very complex curved surface with a very simple original object. In this case, it's the control cage, or the control mesh, which is the Editable Poly object.
And finally, I've just got a Smooth Modifier on the top in order to soften up these edges. So it's a basic concept of what we're going for here with Subdivision Surface modeling. Before we dive into this, I also want to mention that a couple of other parts here are constructed with other methods. The base here is using a Lathe Modifier. If I go down to the Line here, you'll see it's just a profile line that I created in the front view. And then the Lathe Modifier creates a surface of revolution here. I can adjust these Degrees parameter so you can see what it's doing.
It's taking that line and then revolving it around an axis to create that mesh. And then, I've also got a couple of cylinders here, ChamferCylinder on this one. And then, I've also used a Sweep Modifier here on this ellipse to create this foot rest. So we're not going to be looking at those particular techniques in this lesson, because this is all about subdivision surfaces. But I wanted to illustrate to you that I've tried to choose the best tool to model these different parts. It wouldn't really be very effective for me to use subdivision surfaces to model something as simple as the base part of this bar stool.
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