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Making Of 'Marcus'

By Andrea Bruschi
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Date Added: 4th January 2011
Software used:
3ds Max, Photoshop, ZBrush, Misc

The first thing I do when I create a character is to define proportions. Looking at references is very important at this stage and I recommend working with a low resolution model. I use the Move tool and Move brush a lot, paying close attention to volume and shape. I think this is one of the most important steps if you're trying to create a believable and anatomically-correct character.

When I say anatomically, I'm not referring to the muscle position or their shape or their names; I'm refering to the shapes generated by them. Basically the silhouette assumed by body parts.

Often when artists approach character modeling, digital sculpting and anatomy studies, too much attention is given to the shape of a single muscle and this causes your model to look bumpy and rigid. The common error, in my opinion, is to study flat muscular system images from anatomy books that show the shape and position of muscles. The problem here is that looking at such images doesn't give us the exact perception of the shapes generated by muscles in 3D space. So being aware of this when using such references will help a lot. Unless you are making a bodybuilder or superhero here is my advice: try to reproduce the overall shape generated by the muscles rather than working muscle by muscle. Try to reproduce that fleshy feeling.
 
For 90% of the sculpting process I use the Clay and Claytubes brushes. I think that those brushes are very cool to sculpt organic shapes with. Combine such brushes with wise use of the Smooth brush and you can get some really nice effects.

Another very important thing is the character's pose. I tend to avoid the basic T pose and try to make a rigger-friendly pose instead, making sure it's naturalistic. I don't like rigid-looking characters. I prefer to bring down the arms to 45 degree angles as this helps to get a relaxed pose. Try to gently lift your arms up to 45 degrees using only your shoulder muscles. Leave your arms soft and your wrists without life... and that's it! In this way your character will have relaxed shoulders, dangling hands that give a light rotation to the forearm and the elbows will be bent, which helps to better define the arm and forearm shape.

Next I start to establish general proportions by doing a lot of tests. At the same time I change the pose to make it more convincing. If the character is going to be dressed then I won't pay much attention to the features of the body, but only create simple shapes and proportions. I like to do tests at this time because then no one will see my weird results... unless they ask me to write a Making Of!

Here are the sculpting proportions for this model (Fig.04).

154_tid_image_04.jpg
Fig. 04

During the modeling of the head I spend a lot of time on the shape of the eyes. I think it is very important to give the right thickness to the eyelids and try to avoid any flickering edges or outline. Pay attention to the lacrimal gland; this is a very important feature of the eyes and will help you to better define the shape of the eyes and position of the pupil. My advice is to put an eye on a background and follow its shape perfectly.

After I'd set up the body and modeled the head, I started sculpting the clothes (Fig.05).

154_tid_image_05.jpg
Fig. 05



Sometimes I start by building a base mesh in 3ds Max and other times I extract parts of my mesh inside ZBrush - it usually depends on the level of detail that I want to have at the beginning. For example, if I have to model a shirt with the collar bent in on itself than I usually build it in Max. This is simply to avoid adding subdivisions to my mesh and have a topology that makes me work easier.

In order to do the drapery I used the Clay brush for inner folds and a cutter alpha brush made by my friend Daniele Angelozzi (http://www.d3d.it) to create the outer folds. As always it is very important to look at some photo references and before you start sculpting folds it is important to bear in mind the shape that the fabric will assume. Here's a simple example: jeans that fall over the shoes. I start by sculpting a cylinder which fits my character's leg. I don't start sculpting the folds immediately, but I try to sculpt the shape first. I define the size that my fabric will assume in 3D space. Only when this is done do I start to sculpt the single folds.

During the modeling process, my advice is to take a break from time to time and go away and do something else. This is because of the effect it can have on the eyes. When you work for a long time on something, your eyes will become used to seeing what you are doing and you won't recognize any mistakes. What I do is try to be as diverse as possible. When I have completed something I move onto something else and then go back to the first thing a day later to make corrections.

Back to the sculpt and when I came to do the texturing I completely re-sculpted Marcus's head because previous imperfections were now visible. So I'd advise you to look at your model with a critical eye. Take inspiration from other models. Before starting a piece, I always look for something that can inspire me and I like to find models that are similar to the one I have in mind. This helps me improve mine and is very useful.

Retopology

When the modeling process was complete, I created the low poly version with the help of Max and its Graphite tool. I used a mid-res model as a base to lean on and reconstruct the topology. During this process I didn't pay attention to the polygon budget. I tried not to exceed it too much, but what I wanted to do was make the normal map creation process easier and get better quality normal maps. More polys means greater accuracy and more similitude with the mid-res mesh. When the normal maps were made, I worked back over the low poly model and deleted some loops here and there to be back inside the polygon budget. In order to avoid texture problems you should not touch unwrap seams when you do this.

Usually I create normal maps with Xnormal. This software allows you to create normal maps by loading in the high poly and low poly models and projecting the details over a texture using the UV co-ordinates of the low poly. There aren't a lot of options to set up.

There is a quick, but less accurate, system that allows you to create normals simply by setting up the ray's distance. I don't want to go into detail about this, but imagine that you want to project a sphere in to a cube and have the length of the side equal to the sphere diameter. Well the distance that the projection ray will have to travel from the sphere to the cube will increase as we move to the cube edge, so if we want to project the whole sphere over the cube then we have to set up the distance data at a level that permits it to reach the cube's edge. This system is not very accurate, in particular when you have to create a normal map over geometry that folds back on itself as the rays could intersect each other and create artifacts.

The other, more accurate, system is to create a projection cage that establishes the maximum distance that projection rays will cover. Xnormal allows you to create and edit this cage and then I prefer to use 3ds Max and Projection Modifier to edit it. First of all you must convert your model to an editable mesh and then apply Projection Modifier. At this point the projection cage will appear; it looks like your model with a bigger size. By moving the vertices of this cage we can define what distance the projection rays will cover. At the end, just export an SBM file and load it as low poly into Xnormal. Check the Use Cage option and launch the calculation (Fig.06)!

154_tid_image_06.jpg
Fig. 06




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Readers Comments (Newest on Top)
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(ID: 149160, pid: 0) Ahmad Hossain on Thu, 13 September 2012 4:49am
your performance is nice but your describing method to teach is so bad that a learner may not expect from you. i wanna see your tutorial to learn how to make cloth but you don
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(ID: 95752, pid: 0) NickZ. :) on Sat, 17 March 2012 9:49pm
So cool to see what you a have done here with the mesh. Beautiful work! Peace-NickZ. :)
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(ID: 44332, pid: 0) Naveen on Wed, 15 June 2011 10:00am
what is this i want tutorials. i am not come on this site for watch these picturs.
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(ID: 35422, pid: 0) Vishnu Jayaraj on Fri, 11 February 2011 3:26am
i want tutorial of 3d studio max full version .rate range 3000 .including contants is animation rigging modeling,bone setting,max script
Munkybutt's Avatar
(ID: 31156, pid: 830702) RKanyama (Forums) on Wed, 05 January 2011 2:34am
If you have a problem with the base mesh mentioned in this tutorial, uncheck, "Colorize" in the Polypaint section within ZBrush 4.Found this out via the thread on [URL="http://www.zbrushcentral.com/showthread.php?t=98620"]ZBrush Central[/URL].
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