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ZBrush 3 for Windows Essential Training
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Masking geometry


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ZBrush 3 for Windows Essential Training

with Eric Keller

Video: Masking geometry

When you are starting to add detail to a model, there are going to be times when you want to apply a mask to the model to restrict changes to certain areas on the surface. Masking in ZBrush is kind of like masking in a digital paint program such as Photoshop. You're basically creating a selection and saying anything within that selection cannot be changed. The great thing about ZBrush is you are actually doing this in 3D to a 3D model. Applying mask is pretty straight forward. I'm going to start of with the most basic way to apply mask and that is to use a rectangular selection.
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  1. 2m 27s
    1. Welcome
      30s
    2. Using the example files
      46s
    3. Overview
      1m 11s
  2. 26m 18s
    1. Understanding pixols
      1m 58s
    2. Establishing canvas size and color
      2m 30s
    3. Positioning 3D objects
      4m 33s
    4. Working with trays and palettes
      2m 52s
    5. Sculpting models in Edit mode
      3m 12s
    6. Discovering sculpting brushes
      5m 29s
    7. Saving models
      1m 27s
    8. Managing memory in ZBrush
      1m 44s
    9. Setting interface preferences
      2m 33s
  3. 1h 52m
    1. Customizing the startup 3D meshes
      5m 44s
    2. Deforming 3D models
      5m 11s
    3. Activating symmetry
      4m 35s
    4. Creating armatures with ZSphere
      8m 28s
    5. Posing armatures with ZSphere
      8m 54s
    6. Working with levels of detail
      7m 33s
    7. Masking geometry
      5m 43s
    8. Hiding and showing polygons
      6m 29s
    9. Organizing geometry using polygroups
      8m 57s
    10. Extruding geometry with edge loops to make necks and ears
      10m 11s
    11. Creating sharp edges with the Crease tool
      4m 19s
    12. Adding parts to your model with subtools
      5m 18s
    13. Posing models with Transpose pt. 1
      7m 35s
    14. Installing the Subtool Master plugin
      4m 29s
    15. Posing models with Transpose pt. 2
      13m 52s
    16. Installing the Transpose Master plugin
      5m 7s
  4. 58m 51s
    1. Sculpting with brushes
      11m 22s
    2. Choosing stroke types
      2m 20s
    3. Using Lazy Mouse
      4m 28s
    4. Sculpting fine details with alphas
      5m 9s
    5. Creating alphas
      6m 46s
    6. Creating stencils from alphas
      9m 28s
    7. Storing morph targets
      6m 4s
    8. Isolating details with 3D layers
      6m 23s
    9. Building surfaces by extracting meshes
      6m 51s
  5. 1h 13m
    1. Picking colors
      3m 2s
    2. Applying textures
      4m 15s
    3. Creating seamless textures
      3m 8s
    4. Painting models
      7m 51s
    5. Mapping 3D model texture coordinates
      5m 32s
    6. Adding sculpture reference planes
      11m 21s
    7. Applying materials
      4m 10s
    8. Modifying standard materials
      10m 17s
    9. Applying MatCap materials
      2m 22s
    10. Creating MatCap materials
      9m 9s
    11. Creating bump maps
      5m 55s
    12. Painting with photos
      6m 31s
  6. 6m 7s
    1. Exporting models
      2m 30s
    2. Importing models
      3m 37s
  7. 1h 1m
    1. Getting started with 2.5D tools
      5m 10s
    2. Modifying paintbrushes with stroke types
      3m 42s
    3. Positioning strokes and models on the canvas
      5m 14s
    4. Using snapshots
      7m 32s
    5. Understanding ZSub and ZCut
      4m 2s
    6. Creating document layers
      7m 47s
    7. Applying transparency
      3m 23s
    8. Lighting the canvas
      9m 3s
    9. Rendering in ZBrush
      6m 10s
    10. Tuning shadows
      4m 53s
    11. Baking lighting into the graphic
      2m 15s
    12. Creating a sense of depth using fog
      2m 37s
  8. 7m 12s
    1. Recording ZBrush movies
      3m 23s
    2. Using macros and ZScripts
      3m 49s
  9. 20m 50s
    1. Can't rotate or move the model
      1m 0s
    2. Can't sculpt on the model
      59s
    3. Can't adjust the lighting
      47s
    4. Can't control disappearing strokes
      52s
    5. Can't move objects smoothly with the Gyro
      2m 2s
    6. Can't move the model on the canvas
      1m 40s
    7. Can't see some parts of the model
      38s
    8. Can't subdivide the model
      2m 27s
    9. Can't control the pivot of the model
      2m 2s
    10. Can't maintain symmetry
      1m 37s
    11. Can't control subtools
      2m 28s
    12. Can't rotate with Transpose without distorting the model
      1m 51s
    13. Can't activate the Transpose tool
      1m 0s
    14. Can't get rid of blurriness on the mask
      1m 27s
  10. 26s
    1. Goodbye
      26s

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ZBrush 3 for Windows Essential Training
6h 9m Beginner Nov 10, 2008

Viewers: in countries Watching now:

Pixologic's ZBrush 3 stands at the forefront of digital 3D sculpting and 2.5D painting, a new medium that is taking the art and entertainment worlds by storm. Visual effects artist Eric Keller shares his expertise and talents in ZBrush 3 for Windows Essential Training. He presents the concepts behind digital sculpting, shows how to produce fantastic images using the unique ZBrush toolset and interface, and demonstrates the power of the Digital Clay and Sculpting brushes. To offer a richer understanding of the application, Eric gives a guided tour of the interface and addresses the most common problems experienced by new users. Exercise files accompany the course.

Topics include:
  • Building and posing digital armatures for sculpture
  • Importing models from other 3D programs
  • Learning how to sculpt a human head based on reference images
  • Detailing skin and surfaces using textures and stencils
  • Creating illustrations with depth, lighting, and surface materials
Subjects:
3D + Animation Modeling Textures Materials
Software:
ZBrush
Author:
Eric Keller

Masking geometry

When you are starting to add detail to a model, there are going to be times when you want to apply a mask to the model to restrict changes to certain areas on the surface. Masking in ZBrush is kind of like masking in a digital paint program such as Photoshop. You're basically creating a selection and saying anything within that selection cannot be changed. The great thing about ZBrush is you are actually doing this in 3D to a 3D model. Applying mask is pretty straight forward. I'm going to start of with the most basic way to apply mask and that is to use a rectangular selection.

So to do this, I have my model here, and I have the greenMan_v01 model loaded on the canvas, and it's in Edit mode, and I'm going to hold the Ctrl key and I'm going to drag from an area on the canvas, a blank part of the canvas and you can see this rectangular selection appears. Now as I drag over the model, you can see the mask portions in the semi-transparent part of the marquee. I'm just going to let it go. Now I have my mask. The mask is the dark area on the model. As I rotate the model, you can see that it went all the way through. I'm going to zoom in to the model by dragging on the Scale button here, and I have my standard sculpting brush chosen; that's the default settings and that's chosen from the Startup Sculpting Brushes here on the left shelf.

And I'm going to start painting on the surface of the model and you can see if I paint over here, nothing changes. If I paint over here, I'm making sculpting changes. You can actually see this area is pushed out and right there along the border of the mask, we have a hard edge to it. The Masking controls themselves are found in the Tool palette, so I have the Tool palette here loaded in the tray and to get to the Masking controls, I'm just going to click on the word Masking and that reveals the controls.

We are just going to talk about some of the basic controls in this movie and get a little bit more advanced in some of the other movies later on. To get rid of the mask, I can just press the Clear button and the mask is gone. And I can clearly see the changes I made to the model. So to create a mask once again using rectangular selection, you just hold the Ctrl key, drag across the model, now you have your mask. If I want to raise parts of that mask or unmask, I hold Ctrl+Alt and drag and I have this white selection. Now I have this different shaped mask. I'm going to zoom out here, hold Ctrl+Alt and drag across the surface.

Another way to apply a mask is to use the Lasso selection, and the Lasso button is found here on the very bottom part of the right shelf. Once I click it, it's activated, and when I hold Ctrl and start dragging, I get a free form selection. So I can add to this mask by just dragging over this free form selection. You notice that the edges of the mask are blurred when I let go. You can blur a mask anytime by clicking on the Blur button. You can also sharpen the edges of a mask by clicking on the Sharpen button. So now, I'm bringing some sharpness to that selection that I made.

Once again as I paint with my sculpting brush, only the areas that are unmasked get changed, so the poor guy has lost his mouth now. I can also invert the mask by clicking on the Inverse button and this just swaps the masked areas with the unmasked areas. And I can unmask the entire object by clicking on MaskAll. I'm going to clear the mask now. One other way to apply a mask to a model is to just paint directly on the model. So if I press the Ctrl key and drag on the surface of the model, now you can see, I'm actually painting on the surface of the model.

I can change my brush size by dragging on the Draw Size button and I can create a very detailed mask. If I hold Ctrl+ Alt, I can erase spread of the mask. So you could really send a fair amount of time here creating a very custom detailed mask. Let's say I'm creating some kind of fine, or something crawling on the surface of this object. I'm holding Ctrl+Alt, raising, I'm going to zoom in here a little bit. I'm just drawing out my mask.

Now I will invert the mask by clicking on the Inverse button, paint on the surface. I can even be fairly slopping my painting because the mask is making sure that only the right parts of the surface are receiving the change. And when I clear the mask, I have this nice detail on the surface here; all created very easily using the mask.

That's the basics of applying a mask to a 3D object. You are going to find there are great way to control detail, so you can really get in there and push the limits of your creativity by applying mask to your object.

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