Easy-to-follow video tutorials help you learn software, creative, and business skills.Become a member

Using NURBS Extrude

From: Maya Essentials 3: NURBS Modeling Techniques

Video: Using NURBS Extrude

Extrude is another way to create a NURBS surface from curves, and how this works is it a uses a profile curve and then extrudes it along a path, which is also a curve. So here we have a very simple case here. I have a circle, which I can use as the profile, and then just a simple Bezier curve, which I can use as the path. So, in order to do this, I select the profile first and then Shift+Select the path last, which means that's the one that's glowing green. And then all I have to do is do Surfaces > Extrude and it takes that circle and runs it along the curve and I have an extrusion.

Using NURBS Extrude

Extrude is another way to create a NURBS surface from curves, and how this works is it a uses a profile curve and then extrudes it along a path, which is also a curve. So here we have a very simple case here. I have a circle, which I can use as the profile, and then just a simple Bezier curve, which I can use as the path. So, in order to do this, I select the profile first and then Shift+Select the path last, which means that's the one that's glowing green. And then all I have to do is do Surfaces > Extrude and it takes that circle and runs it along the curve and I have an extrusion.

Now, extrusions are great because you can actually use the path to change the shape of anything here. So if I were to go into wireframe mode here, so if I right-click over that path do and Control Vertex, you can see this is Bezier curve and I can change it pretty much however I want. Now the surface itself can also be changed. So let's go back into Shaded mode here and select this surface. Now we can change it when we actually do the extrude here. I'm going to go ahead and show you the options for that.

So we have a style. So we have Distance, Flat, and Tube. It defaults to Tube, so it's the result at the profile which is the first curve we select or at the path, which is the second. Where is the pivot? What's the orientation? We also have options for Rotation and Scale. I'm going to go ahead and close this because we already have the loft applied, and we can get to these same parameters by going into the Attribute Editor. So let's take a look at how these work. I'm going to scroll over to my extrude 1 tab here, and let's take a look at some of these. So these are basically the same options, Extrude Type. So this is Distance. Flat basically extrudes it flat.

It doesn't curve the curve at all. It keeps it the exact same profile. And Tube, as you can see, Tube actually follows the angle or the tangent of the path, so this is a difference between Flat and Tube. And then which pivot? Do we want to do the component pivot, the center of the bounding box, and so on? It depends on how you set up your curves as to whether that's going to have an effect. And then do we have a fixed path or not? And again, that's just going to change the orientation of the object a little bit.

Now, the two that I actually like here are Rotation and Scale. Let's go ahead and play with Scale first. So we can scale the end of this extrude to either 0 or a number larger than 1, which means we can actually use this to create pointy objects or trumpet-like objects. Now, the base of the object here is going to be at the first vertex of the path, okay. So it depends on the curve orientation or the direction of your path as to where this scale takes place.

So if you want the scale to take place at the bottom, you would have to reverse the path, which is this curve here in the middle. We also have a Rotation. So I'm going to go ahead and scale this down and you can see how rotation works as well. So we can actually curve that as it goes along that path to create a twisty sort of effect. So those are some of the basics. Now let's go ahead and put this to practical use. So I'm going to go ahead and select all these and delete it. Let's go into our Channel Box here, and under layers, I'm going to turn on my Sub and Reference layer, and this is a submarine we've been playing with.

So let's go ahead and create this little detail here around the top, so we have this ring that kind of goes around the top of the conning tower. And we can use an extrude to create that. So I'm going to select the surface that is the conning tower, right-click, go Isoparm. And I'm going to position that kind of in the middle of that detail, so we're going to use this as the path with which to extrude a profile. So once I get that in the middle, I'm going to do what I did before here, which is Edit Curves > Duplicate Surface Curves. So now I have this curve here, and I want to go ahead and do a Modify > Center Pivot so that the pivot is exactly at the center of this curve.

So now I need something to extrude along that. Well, we can either draw a curve or just create something, and I'm going to be lazy and I'm just going to create a circle. So I'm going to do NURBS Primitives > Circle, and I'm going to position a circle right on the edge of that and just kind of create a very small circle that's about the width of this drawn detail. And as you can see, my drawing is not that great, but we'll fix that in the modeling. So, how do we do this? We select the profile first and then the path.

So this is going to be the profile. This is going to be the path. So I select this circle first and then that extracted curve second. So I select this profile, this curve here, and then do Surfaces > Extrude. And there we go, very simple. So as you can see, now I have a ring that goes around the top of that conning tower. So as you can see, Extrude can be a very, very handy tool, and you can also use it with curves that are extracted from surfaces to get detail that sticks to that surface.

Show transcript

This video is part of

Image for Maya Essentials 3: NURBS Modeling Techniques
Maya Essentials 3: NURBS Modeling Techniques

30 video lessons · 6256 viewers

George Maestri
Author

 

Start learning today

Get unlimited access to all courses for just $25/month.

Become a member
Sometimes @lynda teaches me how to use a program and sometimes Lynda.com changes my life forever. @JosefShutter
@lynda lynda.com is an absolute life saver when it comes to learning todays software. Definitely recommend it! #higherlearning @Michael_Caraway
@lynda The best thing online! Your database of courses is great! To the mark and very helpful. Thanks! @ru22more
Got to create something yesterday I never thought I could do. #thanks @lynda @Ngventurella
I really do love @lynda as a learning platform. Never stop learning and developing, it’s probably our greatest gift as a species! @soundslikedavid
@lynda just subscribed to lynda.com all I can say its brilliant join now trust me @ButchSamurai
@lynda is an awesome resource. The membership is priceless if you take advantage of it. @diabetic_techie
One of the best decision I made this year. Buy a 1yr subscription to @lynda @cybercaptive
guys lynda.com (@lynda) is the best. So far I’ve learned Java, principles of OO programming, and now learning about MS project @lucasmitchell
Signed back up to @lynda dot com. I’ve missed it!! Proper geeking out right now! #timetolearn #geek @JayGodbold
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

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 Maya Essentials 3: NURBS Modeling Techniques.

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 ?

Become a member to like this course.

Join today and get unlimited access to the entire library of video courses.

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.