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Extrude can also be used in conjunction with curves to create even more refined effects. Now, we really haven't touched on drawing curves, so I have drawn one for you. We have this file open, and it has a very simple box and a curve in it. And all we have to do is select the box, right-click over it, and select an individual face. Now, all we have to do is hold down the Shift key, and select the curve. So we have the face on the box selected and the curve itself selected.
Then, let's go into Edit Mesh > Extrude. Now make sure that Keep Faces Together is toggled on. Make sure that's checked. Let's go into our Tool options here for Extrude, and I want to make sure I up my number of Divisions a little bit. So let's go ahead and give it maybe 8 or 9 divisions here. Let's go ahead and do Extrude. Now what it does is it uses that curve to actually extrude my faces, very cool.
Now I have additional control over this. In fact, if I went into my Extrude tool here, you see I have two options here; One is called Taper, and Twist. Now, I am going to go ahead and close this, because I've already done the Extrude, but if I go into my Attribute Editor, I can actually play with those effects here. So if I go into my polyExtrudeFace, you see I have Twist, which actually twists along that curve, as well as tapers. So do I want it to go to a point or do I, for example, if I keep it at 1, it actually keeps it the exact same size the whole time, and how many times do I want to twist it, do I want to twist it or not? And so on.
I can also use what's called a Taper Curve. So I can actually taper it down. So I can do Linear or Smooth, so I can actually make a very nice, very nice curve here, and so on. So it makes it very easy to create these kind of tentacle-like effects without having to do too much modeling. Now, once I have got this done, let's go back into, I am going to right-click over this, go back into Object mode, and I am going to go into XRay mode here.
So this will actually give us a good reason to use this. If I go into that, you can see that there is that curve on inside of there. If I actually can select that, you see that moving the curve actually changes, in fact, let's go ahead and turn on Wireframe on Shaded here, so you can kind of see how that affects that. Now let's go ahead into Wireframe mode, so we can actually change this a little bit more. If I right-click on this and hit Control Vertex, I can actually take the actual shape of the curve and change it as well.
Now, once I've got that, you can kind of see how I can actually change the whole shape of the curve, and actually manipulate how this effect works. So I can change the curve. I can change the position of the curve or the shape of the curve and actually affect that Extrude. So you can see there is a lot of different possibilities here. In fact, I could even animate that curve and make kind of like a flowing tentacle type effect. So the possibilities with this sort of extrude are endless, which is kind of why I wanted to show it to you.
So go ahead and play with that, and have some fun with this particular tool.
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