3D Tools / Crafting 3D Objects
Subtitles of the Movie
In this movie, what we're going to be covering is the make up of geometry within ZBrush and what the differences of that make up are. If you go over to the palette here and let's choose a 3D cube, or Cube 3D, and click and drag it out and hit Edit. If you have this button on you can see I have a frame. And the frame tells a story. It tells the story of the make up of this object and how un-uniformed it really is. Now if you're new to 3D world, you would know the term uniform. Uniform is the spacing between all polygons, and it's also uniform is the spacing between like phases, like this is a uniformed square because it's equal on all sides. So, what will happen here is if you ever use a polyPrimitive within ZBrush to sculpt with, if you look in here what'll happen is, un-uniformed geometry actually sculpts very badly, in fact, it is very damaging to it. So, these polyPrimitives are very good for some things but not all things. I would never take this polyPrimitive and ever, ever build anything like a video game character out of it. I would only probably use these for illustration purposes only. And we'll get into that, but what the advantage of it is, since it's so un-uniformed, they did this for a reason within ZBrush, I hope they did. I'm just guessing that, but you know, that's the only thing that really makes sense, why you would make a square this bad. So if you go to the Initialization tab it'll actually tell you a story. It'll show you, you know, you can go in here and let's say, it has four sides, now, let's say, hey I can go below four sides, but it wouldn't be a square, it would be a triangle, and you see, because of that, ununiformed geometry like that, it can take that shape. Okay, and I can also lower this down, and lower this down, and you can see I can start getting a different shape out of the polyPrimitive quickly and easily that way. So for every polyPrimitive in here it has the same attributes. Let's take for example, the ring 3D. Let's click on it, and you'll notice it'll automatically change. Now, if I ever wanted to go back and get the other object well, all I do is I have to go up here and you can see whatever I've been working on in this session of ZBrush I can always go back to. Now, I never did anything different to the ring, so the ring doesn't get mounted up here. That's important. Let's go back to a ring. If I ever made something different out of it, then it would get mounted up to the top. Okay. Now, if we drop down to the Initialization of it, we can make many things out of a ring. So, we can scale it back, and you can start seeing that if you scale it back it'll start getting pointy. For my coverage, let's say I go half with it, I start getting this horn, okay? If I twist it, it actually damages the geometry just a little bit, so we're not going to that, but I just want to show you Twist attributes. Now, we have to do Masking before we do Twist, so we'll get into that later. Okay, so I've got my subdivision count, and the rest is, you know, pretty well set in stone as far as the history of 3D, you know, how to divide an object hopefully by now. If you're new to 3D package, a lot of polygons equals slower machine. Just know that. So, this is a very useful shape for developing horns, or developing something. Now, remember what I said. I would never use these polyPrimitives to actually build onto an object that I'm going to be exporting into another 3D packet. Okay. Now, open the doc, you can see my Ring 3D. Okay, so in the next movie what we're going to be covering is objects that are friendly and how to convert unfriendly geometry to friendly, sculptable geometry.
Tutorial Information
| Course: | Pixologic ZBrush 3.1 |
| Author: | Jason Welsh |
| SKU: | 33866 |
| ISBN: | 1-934743-63-1 |
| Release Date: | 2008-04-14 |
| Duration: | 7 hrs / 108 lessons |
| Work Files: |
Yes |
| Captions: | For Online University members only |
| Compatibility: |
Vista/XP/2000, OS X, Linux QuickTime 7, Flash 8 |
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