Remerciez-le!

Remerciez @Admin pour avoir partagé cet document gratuitement, de la manière la plus simple, en partageant sur les réseaux sociaux.

Contents Chapter 01 003 Chapter 02 010 Chapter 03 015 Chapter 04 021 Chapter 05

Contents Chapter 01 003 Chapter 02 010 Chapter 03 015 Chapter 04 021 Chapter 05 027 Chapter 06 033 Chapter 07 038 Click on the Icon below to download the movie files supplied for this eBook. The Movies have been zipped up and the file is 1.92 gig You can also download the seperate movie files at the end of this ebook page 4 www.3dcreativemag.com Chapter 01 Beginner’s Guide to ZBrush Chapter 1 Created In: ZBrush Introduction In this series of 7 articles, I was asked to produce a beginner’s guide to Zbrush which assumed that the user does not know a whole lot about the program or how to use it. These articles aren’t meant to take the place of either the help files, or proper training, but should give you an excellent starting point to get you into the world of ZBrushing. In this series we will be working our way through the basic process of creating a creature bust, taking it to completion by the last article (Fig.01). We will be starting with a basic Zsphere base mesh that we will create ourselves and we’ll use this as our starting point for sculpturing and finally adding texture to. The reason I’m splitting the full project into 7 parts is that we can take it at a beginner’s pace and cover as much ground as possible for people totally new to Zbrush. (Plus you’ll end up with a finished digital sculpt that will give you the confidence to approach you own projects in a similar manner.) I will be assuming that, at the very least, you have read the basics of navigating in ZBrush from the Zbrush help files. This will help us cut down the length of the series a little and will also make sure that as a new user you get the most out of these lessons. I would like you to practice what you learn in each lesson, either on the model we are doing, or on one of your own. It is important that you do this because the more that you use Zbrush, the more confident and at home with it you will become. Assuming you know how to navigate, we’ll start by covering the page 5 www.3dcreativemag.com Chapter 01 Chapter 1 Beginner’s Guide to ZBrush basic concepts of some of the brushes etc that we will be using, before creating our Zsphere base mesh. In the next article we will start the sculpting ‘proper’. Basic techniques Showing and hiding polygons There are many reasons why you might want to hide part of your geometry while working on it. These range from simply wanting to concentrate on a particular area you are working on, to wanting to improve the performance of your image at high polygon counts. To hide some polygons, first take one of the default models provided with Zbrush (a selection of them are available on the splash screen) to test with. Hold down Shift + Ctrl and drag over the area you wish to keep. This will then hide everything else on this tool. To remove more polygons from this area simply do the same as before, but before releasing your left mouse stop pressing the control key. The previously green selection box will now turn red to let you know that this area will be hidden. You can also have your selection changed from the default box dragging type to a lasso type. You can find this in some of the interface layouts and also in the Transform Palette. This then lets you select much more complex shapes than are available with the default box drag type (Fig.02 and Fig.03). Masking off areas A mask can be described using a favourite analogy of mine: just think of them like the force fields on the star ship enterprise. When page 6 www.3dcreativemag.com Chapter 01 Beginner’s Guide to ZBrush Chapter 1 you have an area masked off (or to continue the analogy, ‘shields up’), that area will remain unaffected by anything you do to the unmasked area. There are literally tons of ways to make masks in Zbrush, but the easiest is to simply hold down you control key and use your brush to draw the area you wish to be masked off. Masks are an essential modelling tool, as it can often be much easier to sculpt an area if other areas you do not want to be affected are masked off. For example, if you wished to close the top eyelids on a head model, you would simply draw a mask over the bottom eyelid so that when you used the move brush, the bottom lid would remain unaffected (Fig.04). Brushes ZBrush’s brush set is arguably one of its most powerful features, along with its ability to handle truly staggering polygon counts. There is a different brush for literally any job you might think of and many of them have more uses than they first seem to. Brushes are controlled by the ZIntensity slider - with 0 being no effect on the model and 100 being a massive effect on the model - and are used along with Zadd (this makes the geometry be pulled outwards) and Zsub (which pushes the geometry into the model). You can also change the way a brush reacts with your fall off, which is controlled by your focal shift. Which stroke you chose from the Stroke menu can vastly change what a brush will do when you use it; as well as more standard stokes, page 7 www.3dcreativemag.com Chapter 01 Chapter 1 Beginner’s Guide to ZBrush there are also a selection of scatter strokes and a drag rectangle one. When used in conjunction with ZBrush’s different alphas, you can do just about anything. You can make and import your own brushes if you want to, but to be honest the ones that come with Zbrush are pretty damn good for 95% of the sculpting jobs you will do, if used correctly. I would recommend simply messing round with the brushes on a subdivided Polysphere for a while to get used to the feel. There are so many options that it is impossible to cover them all here, but as with everything in Zbrush, if you are not sure what something does just hover over it, press the Control key and a nice box will come up outlining what it is and what it does. There are some brushes that it is really important to know about from the get go. The smooth brush is one you will use a lot; it smoothes out areas you are working on to help you get the surface to your digital sculpture that you want without any nasty bobbling on it. It smoothes the transition between adjacent polygons, but really that’s just a complex way of saying ‘it does what the name implies’. We will be covering the difference between some of the brushes as we progress through this series. Move Brush Vs Move tool This confuses new users quite a lot, so I thought it best to cover it in this article. There are two sorts of ‘move’ in Zbrush: a move brush, which when selected will move areas of your model according to what stroke type, alpha ad falloff you have and a transform move, which uses action lines. There are also scale and rotate transforms as well, but we will go into those later in the series. For most sculpting jobs you will probably use the move brush found in the brush menu, so experiment with it (like the other brushes) for next time and we’ll take things further (Fig.05 and Fig.06). The Birdman Project Part 1 the sphere base mesh First we’re going to create a base mesh in Zbrush, using Zspheres to quickly rough out a basic base mesh that will give us somewhere to start. Although you could obviously import a base mesh polygon modelled in a separate package, it is important to get to grips with the very basics of Zspheres early on if you are to gain total confidence in using Zbrush in the long term. Zspheres are a special type of tool in Zbrush that enable you to quickly and effectively block out your base mesh. They are also used for Zsphere rigs and are part of the core concepts of Zbrush. A Zsphere is a two-tone sphere that is used in a few different workflows in Zbrush such as retopology and Zsphere rig posing. Making a base mesh will save a lot of time (as well as space in this series), so as such we’ll be using them (Fig.07). page 8 www.3dcreativemag.com Chapter 01 Beginner’s Guide to ZBrush Chapter 1 To create our base mesh, pick the two-tone sphere from your tool menu and press ‘X’ to activate X symmetry (Y & Z can also be used to switch those types of symmetry on and off as well). Symmetry means that everything we do on one uploads/Management/ beginners-guide-zbrush.pdf