Hi !
Featured games (90)
games approved by the League of Dukes
Games in Showcase (711)
Games in Android Showcase (213)
games submitted by our members
Games in WIP (785)
games currently in development
News: Read the Java Gaming Resources, or peek at the official Java tutorials
    Home     Help   Search   Login   Register   
Pages: [1]
  ignore  |  Print  
  Spacial claraifications  (Read 1185 times)
0 Members and 1 Guest are viewing this topic.
Offline BrassApparatus

Junior Devvie

« Posted 2013-04-21 12:14:03 »

Ok so I'm learning OpenGL through the arcsynthesis tutorials and ra4king's ports.
I'm a little fuzzy on something. Could someone help clarify the roles of the different spaces in OpenGL?
Just something simple to help clarify NDC/Camera/Clip/?? spaces. Its a little hard to grasp at first.
Offline quew8

JGO Knight

Medals: 53

« Reply #1 - Posted 2013-04-22 15:51:24 »

Click to Play
Click to Play

These two pictures are from the red book. I found them to clarify everything for me.
Offline Danny02
« Reply #2 - Posted 2013-04-22 16:55:11 »

you can think of spaces in OpenGL as local coordinate-systems

i.e. if we both stand on a 100m race track, me at 50m and you at 70m.
YOu are now standing +20m to my relativ space.

So in computer graphics we usualy have 4 spaces:
  • object/local/model space, relative to the object - your model files are all in this space
  • world/global space the coordinate system of your game
  • camera/view/eye space relative to your camera - let you know if a object is i.e. 1m far of your face
  • screen space on which screen pixel a object is located

one always use a matrix to convert from one space to another, to get the other direction one can use the invers of that matrix

Games published by our own members! Check 'em out!
Legends of Yore - The Casual Retro Roguelike
Offline BrassApparatus

Junior Devvie

« Reply #3 - Posted 2013-04-22 20:17:44 »

Thank you both! That helps clarify things a lot. It is difficult to grasp, especially with w thrown in Smiley
Pages: [1]
  ignore  |  Print  
You cannot reply to this message, because it is very, very old.

numerical (272 views)
2017-02-21 07:32:16

numerical (270 views)
2017-02-21 07:31:46

theagentd (382 views)
2017-02-18 13:42:33

theagentd (381 views)
2017-02-18 13:35:16

h.pernpeintner (1548 views)
2017-01-24 22:39:11

h.pernpeintner (1535 views)
2017-01-24 22:38:32

Galdo (2100 views)
2017-01-12 13:44:09

Archive (2100 views)
2017-01-02 05:31:41

0AndrewShepherd0 (2637 views)
2016-12-16 03:58:39

0AndrewShepherd0 (2346 views)
2016-12-15 21:50:57
List of Learning Resources
by elect
2016-09-09 09:47:55

List of Learning Resources
by elect
2016-09-08 09:47:20

List of Learning Resources
by elect
2016-09-08 09:46:51

List of Learning Resources
by elect
2016-09-08 09:46:27

List of Learning Resources
by elect
2016-09-08 09:45:41

List of Learning Resources
by elect
2016-09-08 08:39:20

List of Learning Resources
by elect
2016-09-08 08:38:19

Rendering resources
by Roquen
2016-08-08 05:55:21 is not responsible for the content posted by its members, including references to external websites, and other references that may or may not have a relation with our primarily gaming and game production oriented community. inquiries and complaints can be sent via email to the info‑account of the company managing the website of java‑
Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines | Managed by Enhanced Four Valid XHTML 1.0! Valid CSS!