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In Maya 2011 Essential Training, George Maestri demonstrates the tools and feature set in Maya, as well as the skills necessary to model, texture, animate, and render projects with this deep and robust piece of 3D animation software from Autodesk. This course takes an in-depth tour of Maya's interface, including navigating and manipulating objects in 3D and customizing the workspace. The course also covers object creation and modeling basics, shading and texturing, surface mapping techniques, character rigging, and lastly, rendering and final output. Exercise files accompany the course.
Now, there are two ways to use Extrude. One is to keep the faces together. The other is to let them go their separate ways. Now, this may sound confusing to you, but let me show you what I mean. I am actually going to create a sphere, and I am going to shade it, and let's go ahead and right-click over this and select a couple of faces here. So when I do a standard extrude, what happens is I just extrude that geometry. If I want to select any individual face on the extrude geometry, everything sticks together.
So I am going to go ahead and select some additional faces here. I am going to Shift+Select four more faces on this sphere, and I am going to go back to Edit Mesh, and this time I am going to Uncheck this box that says Keep Faces Together. So now with that Unchecked, I am going to use the Extrude tool. Now watch what happens. The faces don't stick together. So what I'm getting here is additional geometry. With this here, I've got one big block with four faces on the top.
This one I've got four separate blocks. Now, this can be used to really good effect for certain types of models. Now typically, we want to keep faces together because that's kind of how we think when we model using Extrude, but this could be used for some really cool effects. So let me go ahead and select the sphere and delete it and just create a new sphere from scratch. I am going to right-click over this, select Face, and let's just select every face on the sphere, and then just do Edit Mesh > Extrude.
I am going to go ahead and grab this blue one, and you can see what I'm doing here is I am extruding every single face on the sphere. Now I'm getting this really kind of like sea urchin effect here, so I can actually scale those down and make them into almost like points, and then I can actually manipulate basically all of that, manipulate the depth by using this particular axis, and now I've got a really cool little object.
If I want to, I can even go into my Attribute Editor, select the object itself, and go into my ExtrudeFace, and I can even add in some additional detail for this. You can see how you can make kind of spiny pointed objects very, very easily. Now, this is actually another way to use Extrude. By turning off Keep Faces Together, you can get multi-sided objects that could be very cool-looking.
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