3D Modeling A to Z – from concepts to techniques Page 1
search - 3d max tutorial free contact - 3d studio max training free feedback - 3d max lesson
quickmenu - 3ds max training free
 
copyright-protection
sajuonline - free 3d max tutorial site links - 3d max tutorial / lesson sajuonline - about 3d max tutorial
 
 
   
break up advice article  
 

3D Modeling A to Z – from concepts to techniques

Author - Saju Asokan
Last Updated: Aug 13 2008
 
Note: Please dont save this page for offline viewing. These pages will be available online 24x7 free of cost. Your visit to each page on this site gives a small revenue through advertisements, that helps to keep this site online and meet the associated expenses.
 
 
| Page 1 | 2 of 2 |
 

In this article we will look into what the 3D modeling is all about. We will see the subject in general, and then dig into the details and inspect the various techniques employed in the modeling process.

Concepts:

If you have seen a sculpture ever in your life, you already know quite a little about 3D Modeling. 3D Modeling is nothing but the creation of a character or a model having three dimensions (as in real world) using the techniques and tools provided by a computer software. The software we use for the purpose will be a 3D Modeling and animation tool like 3DS Max, Maya, SoftImage etc. The tool will provide a set of tools that a 3D artist can use to sculpt or model, an object in his imagination, into a 3d computer representation. This 3D model can be altered, animated or rendered into a movie in accordance to the artist’s need. This is what 3D modeling is, if we look it from a broad top view.

Let’s dig a bit deeper:

Every 3D Model in computer representation is composed of polygons. The polygons may have three or more vertices and such hundreds or thousands or even millions of polygons may comprise a 3D Model. So is it like, a 3D artist draws each and every polygon as such? Fortunately, no!  Here comes the softwares like 3DS Max and Maya to our rescue. These 3d modeling packages provide a wide variety of modeling tools that an artist can use for creating a polygonal model. The artist will usually draw the outlines that define the model’s shape in three dimensions, and the software will tesselate that into a polygonal mesh. All that an artist has to do is define the 3 dimensional profile of the character he has in his imagination. There are a number of modeling techniques that are widely used. Let’s go through them one by one… 

 

Primitive Modeling:

This is a very basic modeling technique and hence has several draw backs too. The software tool like 3DS Max, Maya etc provides a set of 3D primitives like spheres, boxes etc. The artist alters these shapes to suit his/her character modeling needs, using lattices, deformers etc. For example, a human head can be modeled using an altered sphere, a neck using an altered cylinder etc. This modeling technique is more suitable for building objects like houses, furniture etc rather than, for live organic modeling, since the shapes appear distinct and the blend of various body parts will not be seamless.

NURBS Modeling:

NURBS stands for Non Uniform Rational Bspline. Don’t get scared by the name. In the nutshell, it is nothing but a mathematical curve, represented using a set of equations. If we see this modeling technique from an outer view, all we see is a set of simple curves that we call NURBS. How the 3d tool implemented it we don’t need to care much (too much mathematics). These curves are very flexible and have control points on them which we can use to change its shape.

Suppose you  want to model a human head using NURBS modeling, you will start with an outline shape and then draw a number of curves extending from one side of the profile shape to the other end, seperated by spaces. These curves defines the shape of the figure. These NURBS curves can be joined to form a 3D NURBS surface. The NURBS modeling has its advantages and disadvantages. It is an easy to model approach, since the NURBS curves are easy to manipulate. But this modeling technique has very limited extensibility. Suppose you want to add an extra limb to your alien creature after the modeling is complete, it will become extremely difficult, if you choose NURBS modeling.

Surface Modeling: 

This is a widely adopted modeling technique used primarily for organic modeling. In this modeling technique, the 3D artist creates a spline cage profile for the 3D character. The splines intersect between each other, creating a completely closed profile of the character, unlike the NURBS technique. Once the spline cage is complete, the 3D artist can apply a surface modifier on this spline cage, which creates a 3D filling surface out of the 2D splines. This method has the advantage that it can be extended to adapt to varied requirements, during any stage of the modeling process. This offers a lot of flexibility to the artist. This technique is used widely in 3D animation softwares like 3DS Max.

 
| Page 1 | 2 of 2 |
3D Modeling - A to Z - from concepts to techniques
 
Latest Additions
maya bubble Maya
3ds max tutorial modeling head
Key frame animation
3ds max tutorial modeling body
Primitive Modeling in Maya
3DS MAX
3ds max tutorial modeling head
Modeling human head in 3DSMax
3ds max tutorial modeling body
Modeling female body in 3DSMax
3ds max tutorial character rigging
Character rigging - Biped - Physique
ARTICLES
article spirituality how i met god
How I met God? Life incident
JUST 4 GEEKS
technical article how to build steering wheel
Build a Racing wheel yourself
 
Articles
SPIRITUALITY
spirituality article does god exist
Does God exist?
spirituality article how i met god
How I met God? Life incident
JUST 4 GEEKS
article for geeks how to build a racing wheel gaming yourself
Build a Racing wheel yourself
TECHNICAL ARTICLES
technical article 3d modeling a to z
3D Modeling A to Z
technical article what is 3d animation
What is 3D Animation?
technical article computer graphics in special fx
Computer graphics in Special FX
 
 
 
  | Learner's corner | 3DS MAX Tutorial - FREE | Articles - Does God exist? | How I met God | Build Gaming Wheel | Breakup Advice | Links |
 
 
Copyright © 2006-2007- Saju Asokan. All rights reserved. Read Disclaimer for details
 
 
How do you rate this page's content ? Please send us a Quick FEEDBACK , which helps us to serve you better