Newsgroups: comp.os.msdos.djgpp
From: Elliott Oti <oti AT phys DOT uu DOT nl>
Subject: Re: 3d engines
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Date: Wed, 12 Aug 1998 09:53:29 GMT
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On Wed, 12 Aug 1998, Anand Singh Bisen wrote:

> Hello everybody
> 
> 
>         Hi ! I am coding in Pascal from sometime now and have recently
> shifted to DJGPP and now i want to make my own 3d engine so i wanted to know
> that where can I get some theoritical doc explaining 3d engines in depth. It
> wont be any problem if the doc is in Postscript rather it'll help me.
> 
>     I really am in a great need of input about 3d engine if anybody can
> answer some or all the questions i'll be great ful.
> 
>         1. How to implement a converted ASC file (from 3ds) in vga i.e. how
> to use the info in ASC

http://www.cica.indiana.edu/graphics/3D.Objects.html


>         2. What are portals in 3d engines

Portals are polygons that divide a larger set of polygons (usually the
interior of a building/dungeon etc.) into closed convex polyhedra. For
instance if you have two cubical rooms connected by a door in the wall
in between, then the polygon of which the door is made of is a portal.

See http://www.cs.unc.edu/~luebke/publications/portal.html

>         3. What is Radiosity or Radioray

Radiosity is a computationally intensive and reasonably accurate method
for determining the light intensity on different surfaces from different
lightsources.

See www.users.globalnet.co.uk/~tomh for more information on this and a
variety of other related topics.

>         4. What is the difference between Phong illumination and Phong
> shading

Phong illumination is a mathematical lighting model. Phong shading is the
application of that model to surfaces, usually polygon meshes.

>         5. And last but most important
>         "Can somebody give me an overview of the functioning of 3d engines
> and types of 3d engines"
> 
>         are 3d engines used oly in games like doom (i know it is ot 3d),
> dukem nuklem or in raytracing programs like POV-Ray also. help me

http://www.gameprog.com
http://cg.cs.tu-berlin.de/~ki/engines.html
http://cg.cs.tu-berlin.de/~ki/bookmarks.html


  Elliott Oti
  kamer 104, tel (030-253) 2516 (RvG)    
  http://www.fys.ruu.nl/~oti