The document discusses a seminar presentation on 3D modeling, which is the process of creating a mathematical representation of objects in three dimensions using specialized software. It covers various applications of 3D modeling in industries like film, video games, education, and engineering, highlighting tools like Blender, Autodesk Maya, and Cinema 4D. The presentation concludes with a discussion on the advantages and disadvantages of 3D modeling, emphasizing its efficiency and accuracy, while noting the high initial costs for software and equipment.

1. PRESENTED BY :
IRSHAD ANSARI
“3D MODELING”
SEMINAR
PRESENTATION
ON

2. CONTENT
1.Introduction
2.3D-Modeling In The Industry
3.How Are They Used
4.Modeling At Home
5.Geometric Theory
6 Advantages And Disadvantages
7.Conclusion

3. INTRODUCTION
3D modeling is the process of developing a mathematical
representation of any surface of an object (either inanimate or
living) in three dimensions via specialized software. The product is
called a 3D model.
3-D modeling is used in many different industries, including virtual
reality, video games, 3D printing, marketing, TV and motion
pictures, scientific and medical imaging and computer-aided
design and manufacturing CAD/CAM

4. MODELING IN THE
INDUSTRY
It seems that 3D Models are appearing nearly everywherein
the media industry, it can be found in various places;
TV & Film
Animations
Video Games
Product Design
Education
Architecture
Science
Engineering
Print/Image Rendering

5. HOW ARE THEY
USED?
TV & Film
In TV and Film 3D Models are used to create large effects such
as the robots in Transformers or to create environments and
characters in films like Avatar.
There are minimal limits and the models can have a high poly
count because they're not rendered out at real time, they're
rendered for playback.
Animation
In animation the visual is commonly very cartoon looking,
simply for the reason that the film is entirely animated,
rendering times would be insane if everything were to look 100%
realistic. Wreck It Ralph (2012) is a good example of a recent
animation.

6. HOW ARE THEY
USED?
Video Games
Just about everything in video game is 3D
modeling, these can be simple things like triggers
or could be more complex entities such as
characters or the environment they live in.
Unfortunately video games render the models in
real time meaning they can't have as many
polys, although some advancements have been
made over the years.

7. HOW ARE THEY USED
Educational Purposes –
3D Modelling allows teachers to show their students certain
objects from body organs to engine parts. Everything can be
shown on screen using a 3D model, where as getting the
actual objects is pricey and sometimes may be a hassle.

8. HOW ARE THEY
USED?
Engineering
3D modelling is used to create prototypes or even parts that
can be printed off using 3D printers, this is much more
precise than doing it manually as laser beams and
mechanics are way more stable than the human hand.

9. MODELLING AT HOME
The internet allows anyone to purchase
and/or download 3D modeling software so
that they can create their own models.
Here are a few different programs that allow
people to create their own:
Blender
Autodesk Maya
Cinema 4D
3D Studio Max

10. BLENDER - SOFTWARE
Blender is an open source program which is a good for
amateurs who are wanting to get into animation and
modelling, with easy interfaces and for the simple reason
that it’s free, so anyone can upload a tutorial on how to use it
for anyone to learn.
This image to the right shows
the interfaces within
blender, everything seems to
have it’s place and it looks
somewhat neat. It’s also
customizable, so you can
rearrange tabs to your own
liking.

11. AUTODESK MAYA
Autodesk Maya is a professional piece of software that is
commonly used for creating video games, It can be used for
3D Modelling and Animation as well, Some people prefer to
build a base model and improve it within some software
called Zbrush.
Autodesk Maya allows the user to create 3D
Modelling, Texturing, Rendering, Dynamics & Effects
(Hair, fur, Particles, nCloth) and 3DAnimation.

12. CINEMA 4D SOFTWARE
Cinema 4D is a professional software used for various
things, ranging from architecture to engineering. On to the
MAXON website - below is an image of what the programcan
be used for.
Cinema 4D looks to have a less complex UI, so it's probably
suitable for new comers to 3D modelling, however I cannot
include my own opinion as I have not used the program
before. However I do have an image of the UI. There are also
courses dedicated to teaching the software to people who
are interested in it.

13. GEOMETRIC THEORY
• 3D Polygon Models Made Up
• Mesh Construction
• Common Primitives
• Textures
• Bump Mapping
• Render Time

14. 3D POLYGON MODELS
MADE UP
Vertexes are pin points where edges intersect.
A face is the surface inside of the edges, these can be
quadratic, or can be triangulated. Edges are single lines –
Maya has a feature that allows to user to create a polygon
with as many edges as they want, they can change it later
using a split tool to cut it up and create more faces. When
extruding edges it’s likey you’re going to want to get the
vertexes as close to one another as you can, and merge them
to make it one whole object.

15. MESH CONSTRUCTION
Box modeling is when the user starts out with a single
cube and then manipulates and subdivides the cube to
turn it into the shape they desire. Although this
method is quick and easy to learn it's not easy to add
immense detail.
Sculpting is when the user starts out
with a sphere and manipulates it by
pulling and pushing around vertexes
and creating subdivision layers, a
lot like the sculpting of clay, hence
the name. Z-brush is a great
software for sculpting.

16. COMMON PRIMITIVES
Common primitives are the basic shapes that a most commonly
used in 3D modeling, common primitives are included within
most 3D software, these include:
Cube Flat
Pane
Pyramid
UV Sphere
Isometric Sphere
Cylinder
Torus - Ring
And in some cases
Helix – Spring

17. TEXTURES
Textures don’t come in all shapes and sizes however they do
come in different… shiny-ness?
There are 4 main textures inAutodesk
Maya, Blinn, Phong, Phong E, Lambert – Autodesk Maya
allows the user to change the glow, transparency and
reflectivity, there are other options that can be changed to
get the desired effect, for instance, glass or water.

18. BUMP MAPPING
Bump mapping is an option to give a texture more “oomf”, by
giving a texture a bump map it will allow the user to add
depths to textures, it’s mapped out by using image files.
Bump mapping is great as it doesn’t take as long as
individual polys but still gives the desired effect.
As seen here, I have used Minecraft textures again to show
how bump mapping works and looks.

19. RENDER TIME
Depending on the amount of fine detailing on models will
effect render times, if a animated film is on a deadlineand
their animation takes too long, they could miss their
deadline.

20. ADVANTAGES
 Work Efficiently and Save Time
 Execute Control and Accuracy
 Avoid Costly Mistakes
 Keep Clients Happy
DISADVANTAGES
The software itself can be expensive so initial costs
are high.

21.  The equipment, whether laser or photo, is becoming
lighter, more effective, less expensive and easier to
manipulate.
 The software is becoming more automatic and can
be turned to in more and more complex situations. It
can be used today on sites which would have until
recently been thought of as impossible to work with.
However, never-ending progress in the field of
computer science means that this type of complexity
can now be processed.
CONCLUSION

22. THANK YOU