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Using the Extrude tool


Maya 2011 Essential Training

with George Maestri

Video: Using the Extrude tool

Now as you get deeper and deeper into polygonal modeling, there are places where you're going to want to add detail to a model. Probably the best way to add detail is by using an Extrude. It's probably the most common way to start adding detail to models. So we're going to start off by creating a simple box. I want a little bit of detail on this box. So I'm going to go into my Channel Box, into my Inputs and for a Width, Height and Depth, I'm going to type in 3.
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  1. 3m 50s
    1. Welcome
      1m 34s
    2. Using the exercise files
    3. A note on screen resolution
      1m 50s
  2. 1h 0m
    1. Overview of the Maya interface
      7m 42s
    2. Working with files and Maya projects
      2m 27s
    3. Navigating viewports
      5m 56s
    4. Reviewing the Viewport menus
      6m 28s
    5. Configuring safe frames and grids
      3m 21s
    6. Selecting objects
      4m 33s
    7. Using the Move tool
      3m 48s
    8. Rotating and scaling
      4m 31s
    9. Manipulating pivots
      3m 59s
    10. Understanding the Channel Box
      5m 36s
    11. Working with the Attribute Editor
      2m 28s
    12. Using the Hotbox
      2m 59s
    13. Working with marking menus
      3m 6s
    14. Customizing the interface
      3m 36s
  3. 59m 25s
    1. Creating polygonal objects
      6m 28s
    2. Working with polygonal components
      4m 42s
    3. Selecting polygonal components
      5m 44s
    4. Working with Soft Select
      7m 3s
    5. Using the Extrude tool
      6m 47s
    6. Keeping faces together
      2m 42s
    7. Extruding along curves
      3m 27s
    8. Using the Polygon Bevel tool
      4m 14s
    9. Smooth and subdivision surfaces
      7m 6s
    10. Blocking out a character body
      11m 12s
  4. 36m 6s
    1. Working with edge loops
      3m 27s
    2. Inserting and offsetting edge loops
      3m 38s
    3. Symmetrical modeling techniques
      5m 53s
    4. Combining objects
      3m 50s
    5. Using the Polygon Bridge tool
      2m 7s
    6. Connecting components and splitting polygons
      2m 48s
    7. Poking and wedging faces
      2m 49s
    8. Working with polygon booleans
      3m 17s
    9. Modeling with nonlinear deformers
      4m 54s
    10. Modeling with lattices
      3m 23s
  5. 1h 18m
    1. Introducing NURBS modeling
      5m 3s
    2. NURBS primitives
      5m 54s
    3. Using the NURBS curve tools
      5m 7s
    4. Creating Bézier curves
      1m 59s
    5. Creating text
      3m 51s
    6. Manipulating NURBS curves
      4m 13s
    7. Refining NURBS curves
      4m 16s
    8. Offsetting NURBS curves
      2m 31s
    9. Editing NURBS surfaces
      7m 3s
    10. Refining NURBS surfaces
      7m 22s
    11. Using NURBS Revolve
      7m 31s
    12. Using NURBS Loft
      4m 11s
    13. Using NURBS Extrude
      6m 0s
    14. Using NURBS Planar
      4m 47s
    15. Stitching NURBS surfaces
      8m 52s
  6. 35m 53s
    1. Extracting NURBS curves from surfaces
      5m 57s
    2. Creating curves on a surface
      3m 53s
    3. Projecting curves on surfaces
      7m 2s
    4. Trimming NURBS surfaces
      3m 42s
    5. Using the NURBS Fillet tool
      5m 31s
    6. Sculpting NURBS and polygonal surfaces
      5m 52s
    7. Converting NURBS to polygons
      3m 56s
  7. 33m 22s
    1. Working with the Outliner
      4m 58s
    2. Grouping objects
      4m 2s
    3. Creating hierarchies
      4m 17s
    4. Duplicating objects
      4m 51s
    5. Understanding the Hypergraph
      3m 32s
    6. Working with Hypergraph connections
      2m 31s
    7. Hiding and showing objects
      2m 12s
    8. Creating layers
      4m 2s
    9. Working with selection masks
      2m 57s
  8. 40m 18s
    1. Overview of renderers
      3m 24s
    2. Understand the basics of materials
      6m 15s
    3. Creating and applying maps
      5m 13s
    4. Using bitmaps as texture
      2m 59s
    5. Working with the Hypershade window
      5m 12s
    6. Working with mental ray materials
      6m 57s
    7. Using displacement and bump mapping
      3m 14s
    8. Using the Ramp Shader
      2m 36s
    9. Using the 3D Paint tool
      4m 28s
  9. 30m 14s
    1. Texture-mapping NURBS surfaces
      5m 46s
    2. Projecting textures onto surfaces
      4m 0s
    3. Texture-mapping polygonal surfaces
      7m 0s
    4. Applying UV mapping
      8m 11s
    5. Using the UVW Editor
      5m 17s
  10. 41m 16s
    1. Creating joints
      10m 2s
    2. Deforming a mesh using the Skin tool
      5m 2s
    3. Creating IK handles
      6m 48s
    4. Creating blend shapes
      5m 39s
    5. Rigging nonlinear deformers
      2m 36s
    6. Finalizing the character
      4m 45s
    7. Rigging the character to the scooter
      6m 24s
  11. 1h 5m
    1. Working with the Timeline
      4m 16s
    2. Creating and adjusting keys (keyframes)
      5m 4s
    3. Editing keys
      3m 13s
    4. Modifying keys in the Graph Editor
      5m 47s
    5. Modifying keys in the Dope Sheet
      2m 51s
    6. Creating breakdown keys
      2m 28s
    7. Animating objects along paths
      5m 54s
    8. Animation playback using Playblast
      3m 10s
    9. Animating with constraints
      6m 16s
    10. Creating animation cycles
      8m 25s
    11. Using set-driven keys
      6m 13s
    12. Adding sound to animations
      2m 24s
    13. Finishing the animation
      9m 45s
  12. 1h 2m
    1. Lights and lighting types in Maya
      7m 29s
    2. Adding depth-map shadows
      4m 13s
    3. Using Raytrace shadows
      3m 28s
    4. Understanding the basics of cameras
      7m 14s
    5. Adding depth of field
      6m 31s
    6. Adding Bokeh using mental ray
      4m 33s
    7. Using motion blur in Maya Software Renderer
      4m 10s
    8. Using motion blur in mental ray
      3m 5s
    9. Raytracing reflections and refractions
      4m 41s
    10. Interactive rendering with IPR
      3m 33s
    11. Lighting a scene
      8m 29s
    12. Batch rendering
      4m 53s
  13. 25s
    1. Goodbye

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Watch the Online Video Course Maya 2011 Essential Training
9h 8m Beginner Jun 01, 2010

Viewers: in countries Watching now:

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.

Topics include:
  • Getting familiar with the Maya interface
  • Organizing scenes
  • Creating hierarchies
  • NURBs modeling for solid objects
  • Adding color to models
  • Applying bitmap textures
  • Working with mental ray materials
  • Polygonal modeling for characters and organic objects
  • Deforming with the Skin tool
  • Setting up lights and cameras
  • Creating realistic effects such as depth of field
  • Working with the Timeline
  • Creating animation cycles
  • Batch rendering
  • Rendering with the mental ray engine
3D + Animation
George Maestri

Using the Extrude tool

Now as you get deeper and deeper into polygonal modeling, there are places where you're going to want to add detail to a model. Probably the best way to add detail is by using an Extrude. It's probably the most common way to start adding detail to models. So we're going to start off by creating a simple box. I want a little bit of detail on this box. So I'm going to go into my Channel Box, into my Inputs and for a Width, Height and Depth, I'm going to type in 3.

Let's go ahead and shade that so we can see what we're doing. So let's go ahead and play with the Extrude tool. Now the Extrude tool is found under the Polygons menu. So let's make sure we have that selected and under that we have Edit Mesh, and you'll find a tool here called Extrude. Now, before I use this tool I need to select a component to extrude. This works on faces, edges, and vertices, but most often it's actually used on faces. So let's go ahead and start with that.

I'm going to right-click over this cube. I'm going to go ahead and select this face on the top. I'm going to go Edit Mesh, and Extrude. Now, what it does is it brings up this little gizmo here, and this is our Extrude tool. So all I need to do is grab this arrow and pull it up, and you can see how I'm actually extruding new detail into this model. Now, this little gizmo that we have actually allows me to do a number of things. We've got these little boxes here, and those are very similar to our Scale tool.

In fact, they are a Scale tool. Then also I can select that box in the middle to do a global scale. I can select the arrows to move this left, right, up, down, back-and-forth, and so on. So once I have this done, I have additional detail in my model. Now, if I go back into Object mode and select my model, let's go ahead and go into our Channel Box and scroll down a little bit. Now, we have our original polyCube, but on top of that you'll notice I have what's called an Extrude face.

What this is is this is what's called a Node, and what this node does is it actually does the Extrude. So what we have got is we've got two objects here, or two nodes. We've got one that creates the cube, and one that does the Extrude. Now, this is kind of a history that we can play with. So let's go into our Attribute Editor, and let's take a little bit of a deeper look in this. You'll notice we have our CubeShape, but we also have one called ExtrudeFace. This actually gives us some control over how that Extrude happens.

So, for example, I translated that, so you could actually change the translation of this. You can change the scale. You can also change the number of divisions. So I can actually give it more or less divisions. So I can actually add detail right here. So this is a great way to actually change something after the fact. Now, let's go ahead and play a little bit more with this Extrude tool. I'm going to go back to my Channel Box here to give some more room. I'm going to right-click over and select Face.

So let's go ahead and select this face here. So we don't have to do one face. In fact, we can select multiple faces. So let's go ahead and select all of these faces here. Let's go ahead and do Extrude again. Now, I'm going to actually use my HotBox. I'm holding down my Space key, and I'm just going to do PolyExtrude, which is basically the last command I had. Now, if I want, I could actually push this in, and create a hole, or again pull this out. So you can see how this actually also works for multiple faces.

You can also use this to create holes. So let's go ahead and use, just select one face here, do PolyExtrude, and you can see how I can actually create holes as well. So what I've done is I've taken this basic cube, and now I've added additional detail, and you can see how this can be the basis of how to sculpt. Now, we've just been working with faces, but you can also work with edges and vertices. So I'm actually going to select this and delete it, and let's just go ahead and create a simple plane, and I'm going to move this above the grid so we can actually see what we're doing.

Again, I'm going to go into my Channel Box, and I'm going to add a little bit of detail to this plane so we have some stuff to work with. Now, one of the nice things about Extrude is that it does work on edges and faces. So let's go ahead and show you how it works on edges. I'm just going to select one edge here, and I'm going to do Edit Mesh > Extrude. Let's go ahead and extrude that. Notice what happens is it actually is just extruding the edge. If I were to select the face and extrude that, it's actually going to add a lot more detail.

But when you extrude only the edge, it's really just creating an additional face. It's kind of creating a plane, because really, what are you doing? You're actually extruding a 2D line into a 3D space, rather than extruding a plane, which actually has more dimensions. So that's why you get actual kind of four-sided geometry here by extruding the plane, and we're actually extruding an edge. Let's go ahead and select some edges here. When we actually extrude those, we're really just getting additional faces.

So this is a great way to kind of model like a shell-like object, or something like that. That will be a great way to do that. In addition to all of these, we can also extrude vertices. Now this is actually a lot more simple, and as soon as I extrude one, you'll see what happens here. All I have to do is just hit Extrude, and all it does is it kind of subdivides it and makes that little pyramid here. So that's basically what an extruded vertice looks like. There is not really as much control as you would have with an edge or a face.

Each one of these actually creates another node. So we started with a PolyPlane. We extruded an edge, a face, some more edges, and a vertex. So you can see how we have this whole history just sitting here. If we go into our Attribute Editor, we can start playing with any of these. So if I wanted to add some divisions here, I can do that just by selecting any one of these nodes and manipulating it. Kind of cool, huh? So those are the basics of Extrude. You can see how Extrude can be used to add geometry and start really sculpting a basic primitive into something that's a little bit more complex and a little bit more interesting.

Find answers to the most frequently asked questions about Maya 2011 Essential Training .

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Q: The Chapter 2 exercise file dog_reference.mb appears blank when opened in Maya. I can't see the dog image. What do I do?
A: Make sure you are working with the most current version of the exercise files for this course from the site. Try downloading the files again. If the image still doesn't appear, make sure the project folder is set to the matching (Chap02) folder in the exercise files.
Also check to make sure you have "hardware texturing" enabled under the viewport's Shading menu.
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