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In this movie, I'll show you how to embed an extra stroke into the group that contains the triangle, as well as stroke the entire layer--which is possible in Illustrator--in order to convert the current version of the nautilus shell into this one here, which features this black stroke, that not only goes all the way around the shell, but coils all the way in through the interior as well. So the first thing that we need to do is go ahead and zoom way in on that triangle, and I want to take this bottom segment here. So I'll press the A key in order to access the White Arrow tool and I'll click along that bottom segment to select it, and then I'll press Ctrl+C or Cmd+C on the Mac in order to copy it, and I'll press Ctrl+F or Cmd+F on the Mac in order to paste it in front.
And it should appear inside the group, which it looks like it did, but I can confirm that here inside the Layers panel as well by twirling open the Nautilus layer, and then I'll twirl open the Group and confirm that I have two paths inside of it. All right! Now what I want to do is get rid of the fills. There are two fills that are assigned to the triangle, and they come over along with our new segment as well. So I'll switch to the Appearance panel. I'll click on one fill. Shift+Click on the other in order to select them both, and then I'll click on the Trashcan icon. All right! Now I want to change the color of this stroke to black, so I'll go ahead and click on the stroke's Color Swatch here inside the Appearance panel and I'll change it to Black.
And then I really want this guy in the background, so I'll press Ctrl+Shift+Left Bracket or Cmd+Shift+Left Bracket in order to move it in back of the triangle. All right! Let's go ahead and zoom in some more here, because this may have thrown off our allignment a little, and it looks like it did. We have some corners that are showing up right around the triangle, which means the effect just gets worse and worse toward the perimeter of the shell. So I'll go ahead and scroll back toward the triangle, and what I want to do here is keep an eye on this neighboring corner, and then marquee both of these anchor points, because we now have two shapes inside of this group.
And I'll press the Up Arrow Key and then maybe the Left Arrow Key as well, and Up Arrow and Left Arrow again in order to nudge this point to a better position so we get a smoother outline, and that looks pretty darn good. I also want to check to see that I don't have any holes showing up in the center here, and so I could once again confirm that by Alt+ Clicking or Option+Clicking on the triangle and reducing that line weight to 0.1, and it looks like everything is great. So I'll go ahead and press Ctrl+Z or Cmd+Z on the Mac to reinstate the 1 point line weight, and I'll press Ctrl+0 or Cmd+0 on the Mac in order to zoom out.
Now, to me, that looks like I've got too thick of a black stroke going, so I'm going to Alt+Drag around the bottom of the triangle--that would be an Option+Drag on the Mac--in order to select that bottom segment. And then I'll Shift+Alt+ Click on the triangle--that's a Shift+Option+Click on the Mac--in order to deselect it, so just that tiny black line is selected. And I'll change the line weight to 0.5 and that will reduce the weight of all the lines, bearing in mind of course that the stroke is getting thicker and thicker and thicker as it is transformed outward, because we've set the Transformation effect to scale those strokes.
All right! Now we need to extend the stroke to this section of the nautilus, but there's nothing really there to stroke. Even so, I can make Illustrator think there's something there by moving up the hierarchy. In other words, we've got this group right here that has the Transform effect assigned to it. If I switch over to the Layers panel, you can see that the Group is enclosed inside a layer. So I'll go ahead and meatball the layer in order to select it. Then I'll switch back to the Appearance panel. Currently we've got nothing going on where the layer is concerned, but I can easily add a stroke to it by clicking on the Add New Stroke icon.
And notice that we make an absolute mess of the illustration, as you can see here, because Illustrator is stroking every possible conceivable thing inside of the nautilus shell, including both sides of the stroke and the center of the stroke as well. And I'm going to make that effect even worse by raising this line weight value to something like, let's say for now 10 points, and you can see that we've completely destroyed the shell. Well, here's what you do. With the stroke active here inside the Appearance panel, you go up to the Effect menu. You choose Pathfinder, and you choose Add, because you can apply many of the Pathfinder operations inside of a layer or group or text object as Dynamic Effects inside Illustrator.
So I'll go ahead and choose Add and you'll notice that goes ahead and gets rid of all the overlapping stuff inside the shell. But then we have another problem. I'll go ahead and zoom in here, and you can see that the line is extending into the shell. If you click on the word Stroke there, you'll see that you don't have access to your Allign Stroke options because they're only available to you when you're stroking a standard path. So what we need to do instead is move the stroke behind the nautilus shell, and you do that by grabbing the stroke and moving it behind the contents, and that produces this effect here.
All right! Now I'll scroll to the bottom left corner of the shell right here, and notice that we've got another problem. The outside stroke--the one that's assigned to the layer--is not aligned to the one that's assigned to the actual shell. Now, I want you to see something. If I switch to the Contents by double-clicking on them and double-clicking again--in which case I now have the two paths selected independently--you can go back up to the layer now any time you like just by clicking on it- which means I could just select the triangle with the Black Arrow tool, for example, and then click on Layer here inside Layers panel in order to regain access to my stroke.
Now, I'm going to click inside Line Weight value and press the Up Arrow Key in order to nudge the line weight upward until I see these guys aligned with each other, and that looks like that happened at 15 points. So we've got a nice clean corner. All right! Now I'll press Ctrl+0 or Cmd+0 on the Mac to once again zoom out. And that's how you create a stroke that coils through the center of the nautilus, as well as around the entire thing, by adding a stroke to the group, as well as a stroke to the layer, here inside Illustrator.
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