Getting Started with CAT Rigging Tools in 3ds Max
Illustration by John Hersey

Understanding hubs


From:

Getting Started with CAT Rigging Tools in 3ds Max

with Joel Bradley

Start your free trial now, and begin learning software, business and creative skills—anytime, anywhere—with video instruction from recognized industry experts.

Start Your Free Trial Now

Video: Understanding hubs

When it comes to creating a custom character rig using CAT, an understanding of CAT's use of hubs is essential as the hub is a building point for many aspects of a CATRig. A Hub is a special type of CATBone. Typically, it's a foundation from which spines, arms, legs, and tails are built. A few specific examples of a CATHub would be a pelvis or a ribcage, maybe even a head, depending of course on its function within the rig.
Expand all | Collapse all
  1. 3m 52s
    1. Welcome
      52s
    2. Working with the exercise files
      38s
    3. What you should know before watching this course
      59s
    4. Setting up the 3ds Max project structure
      1m 23s
  2. 5m 29s
    1. What is CAT?
      2m 4s
    2. Locating CAT features in the 3ds Max user interface
      3m 25s
  3. 26m 3s
    1. Using the preset rigs
      3m 38s
    2. Organizing a rig using custom names and colors
      6m 1s
    3. Editing the preset rigs
      4m 33s
    4. Exploring the 3ds Max Modifier List
      5m 11s
    5. Repositioning bone pivots
      3m 8s
    6. Using control gizmos
      3m 32s
  4. 28m 15s
    1. Understanding hubs
      3m 19s
    2. Adding legs to a rig
      4m 21s
    3. Working with spines
      4m 44s
    4. Adding limbs
      4m 45s
    5. Adding extra bones to the head
      6m 0s
    6. Adding toes and tails
      5m 6s
  5. 16m 17s
    1. What is a muscle strand?
      6m 15s
    2. Using a muscle strand on a rig
      3m 22s
    3. What is a CAT muscle?
      3m 1s
    4. Putting a CAT muscle to work
      3m 39s
  6. 11m 42s
    1. Understanding the Setup and Animation modes
      3m 17s
    2. Exploring the Absolute layer
      3m 13s
    3. Explaining adjustment layers
      2m 23s
    4. Exploring the CATMotion layer
      2m 49s
  7. 16m 4s
    1. Working with the hand and foot hubs
      4m 1s
    2. Exploring the foot pivot system
      3m 40s
    3. Exploring the CAT display inside track view
      4m 5s
    4. Using the IK/FK system
      4m 18s
  8. 15m 31s
    1. Exploring the CATMotion Editor
      2m 28s
    2. Customizing motion
      4m 49s
    3. Directing motion
      5m 25s
    4. Grounding motion
      2m 49s
  9. 29m 41s
    1. Building a rig: The lower body
      7m 1s
    2. Building a rig: The upper body
      8m 36s
    3. Making good use of secondary bones
      4m 54s
    4. Creating a rough skin pass
      3m 45s
    5. Creating a stress-test animation
      5m 25s
  10. 42s
    1. What's next?
      42s

please wait ...
Watch the Online Video Course Getting Started with CAT Rigging Tools in 3ds Max
2h 33m Intermediate Nov 06, 2012

Viewers: in countries Watching now:

Discover an alternative to the traditional character rigging workflow with the Character Animation Toolkit (CAT) for 3ds Max, which offers preset character rigs as well as custom tools for creating a rig from scratch. Author Joel Bradley demonstrates animation layers; CAT muscles, which you can use to create a skin that deforms and stretches realistically as your character moves; and the forward/inverse kinematics workflow. The final chapter puts all these features into motion, as you apply the tools to a full character rig with secondary bones and perform a stress test animation.

Topics include:
  • What is CAT?
  • Using and editing preset rigs
  • Repositioning bone pivots
  • Using CAT control gizmos
  • Working with spines
  • Adding limbs to a character
  • Working with adjustment and motion layers
  • Animating with the foot pivot system
  • Building a start-to-finish rig with CAT
Subject:
3D + Animation
Software:
3ds Max
Author:
Joel Bradley

Understanding hubs

When it comes to creating a custom character rig using CAT, an understanding of CAT's use of hubs is essential as the hub is a building point for many aspects of a CATRig. A Hub is a special type of CATBone. Typically, it's a foundation from which spines, arms, legs, and tails are built. A few specific examples of a CATHub would be a pelvis or a ribcage, maybe even a head, depending of course on its function within the rig.

To actually create a CATHub, we first need to create a blank CATParent, which hopefully by now we are quite familiar with. Let's come over to our Helper section and dropdown our list and choose CAT Objects. Let's select the CATParent button and then click and drag in our viewport to create the Helper. I just want to make some modifications. I'm going to change the CATUnits Ratio to 0.338, just to make it a little bigger in the scene.

Next, I want to orient it so it is facing the same way as our creature. I'm going to right-click and come to the Rotate tool and then press the A key to turn on our angle snap. Now I'm just going to rotate this minus 90 degrees in the viewport. With our Helper in place, we can now switch over to our Modify panel, where again we gain access to all of its options, but we're interested in scrolling down to the bottom of our CATRig Load Save rollout, because you'll notice just underneath our preset rig list, we have this Create Pelvis button.

Clicking on this creates a hub in the scene, which obviously can now function as a pelvis. As with all bones in a CATRig, we can change its name, which I am going to do. I'm just going to rename it to Pelvis, press Enter, and we can also change its color. I'm just going to quickly change it to a value of 198, 225, 87, and again, I'm just going to click OK. We also--just like a standard CATBone--get access to the Length, Width, and Height parameters, which I'm just going to adjust now to better match our creature.

So I'm going to set the Length to a value of 31, the Width to a value of 48, and the Height to a value of 17.7. It's usually a good idea to make certain that the pelvis is in the correct position for our character before moving on to creating limbs. The position and placement of the pelvic hub will quite obviously impact the position and placement of any limb bones that are built from it. Coming over to my Front viewport, I'm just going to rotate this bone around about 30 degrees, and I'm also going to move it into a better position, again, just to match our creature.

From this very simple start, we can build all manner of rigs ranging from very simple to very complex, which is exactly what we'll do over the next few videos using of course the character art that we have set up on our image plane.

There are currently no FAQs about Getting Started with CAT Rigging Tools in 3ds Max.

 
Share a link to this course

What are exercise files?

Exercise files are the same files the author uses in the course. Save time by downloading the author's files instead of setting up your own files, and learn by following along with the instructor.

Can I take this course without the exercise files?

Yes! If you decide you would like the exercise files later, you can upgrade to a premium account any time.

Become a member Download sample files See plans and pricing

Please wait... please wait ...
Upgrade to get access to exercise files.

Exercise files video

How to use exercise files.

Learn by watching, listening, and doing, Exercise files are the same files the author uses in the course, so you can download them and follow along Premium memberships include access to all exercise files in the library.


Exercise files

Exercise files video

How to use exercise files.

For additional information on downloading and using exercise files, watch our instructional video or read the instructions in the FAQ .

This course includes free exercise files, so you can practice while you watch the course. To access all the exercise files in our library, become a Premium Member.

Join now Already a member? Log in

* Estimated file size

Are you sure you want to mark all the videos in this course as unwatched?

This will not affect your course history, your reports, or your certificates of completion for this course.


Mark all as unwatched Cancel

Congratulations

You have completed Getting Started with CAT Rigging Tools in 3ds Max.

Return to your organization's learning portal to continue training, or close this page.


OK
Become a member to add this course to a playlist

Join today and get unlimited access to the entire library of video courses—and create as many playlists as you like.

Get started

Already a member ?

Exercise files

Learn by watching, listening, and doing! Exercise files are the same files the author uses in the course, so you can download them and follow along. Exercise files are available with all Premium memberships. Learn more

Get started

Already a Premium member?

Exercise files video

How to use exercise files.

Ask a question

Thanks for contacting us.
You’ll hear from our Customer Service team within 24 hours.

Please enter the text shown below:

The classic layout automatically defaults to the latest Flash Player.

To choose a different player, hold the cursor over your name at the top right of any lynda.com page and choose Site preferences from the dropdown menu.

Continue to classic layout Stay on new layout
Exercise files

Access exercise files from a button right under the course name.

Mark videos as unwatched

Remove icons showing you already watched videos if you want to start over.

Control your viewing experience

Make the video wide, narrow, full-screen, or pop the player out of the page into its own window.

Interactive transcripts

Click on text in the transcript to jump to that spot in the video. As the video plays, the relevant spot in the transcript will be highlighted.

Learn more, save more. Upgrade today!

Get our Annual Premium Membership at our best savings yet.

Upgrade to our Annual Premium Membership today and get even more value from your lynda.com subscription:

“In a way, I feel like you are rooting for me. Like you are really invested in my experience, and want me to get as much out of these courses as possible this is the best place to start on your journey to learning new material.”— Nadine H.

Thanks for signing up.

We’ll send you a confirmation email shortly.


Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

Keep up with news, tips, and latest courses with emails from lynda.com.

Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

   
submit Lightbox submit clicked
Terms and conditions of use

We've updated our terms and conditions (now called terms of service).Go
Review and accept our updated terms of service.