Hi !
Featured games (84)
games approved by the League of Dukes
Games in Showcase (601)
Games in Android Showcase (171)
games submitted by our members
Games in WIP (649)
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  
  how to get the projection of a point on a plane?  (Read 1128 times)
0 Members and 1 Guest are viewing this topic.
Offline AndyLau

Senior Newbie

Java games rock!

« Posted 2003-09-25 23:13:15 »

I  have a point on a plane and want to get its projection on the other. How can I?
Offline Guoshima

Junior Devvie

Java games rock! Do they .. ?

« Reply #1 - Posted 2003-09-26 10:01:48 »

don't really know what you mean .. the projection of a point on a place to what .. and why do you need it ?
Offline zingbat

Senior Devvie

Medals: 1

Java games rock!

« Reply #2 - Posted 2003-09-26 11:48:38 »

There is some math to do that but i dont know any way to do it directly in java3d. You need to use the vecmath libs and do the calcs yourself.

I supose you want to find the vector from the view to the point and then use that vector to project the point into any surface that gets on the way. You could use parallel projection or perpective but you probably need to do the calculations point by point if you want to project an entire shape of points. For that you need to read the about picking in the tutorial and in the specification.
Games published by our own members! Check 'em out!
Legends of Yore - The Casual Retro Roguelike
Offline Guoshima

Junior Devvie

Java games rock! Do they .. ?

« Reply #3 - Posted 2003-09-27 11:10:06 »

euh .. from your explenation I would think that this is defently a parallel projection and there are some quick ways to do this. I think there are some trick to this in the OpenGL Red Book 'cause OpenGL uses this to project the scene to the screen. Or just search the net for Parallel Projection and you'll find something ..
Offline AndyLau

Senior Newbie

Java games rock!

« Reply #4 - Posted 2003-09-27 12:21:14 »

Thanks you all!
Pages: [1]
  ignore  |  Print  
You cannot reply to this message, because it is very, very old.

Jesse (10 views)
2015-07-29 04:35:27

Riven (33 views)
2015-07-27 16:38:00

Riven (16 views)
2015-07-27 15:35:20

Riven (20 views)
2015-07-27 12:26:13

Riven (10 views)
2015-07-27 12:23:39

BurntPizza (28 views)
2015-07-25 00:14:37

BurntPizza (39 views)
2015-07-24 22:06:39

BurntPizza (22 views)
2015-07-24 06:06:53

NoxInc (25 views)
2015-07-22 22:16:53

NoxInc (17 views)
2015-07-22 22:13:39
List of Learning Resources
by gouessej
2015-07-09 11:29:36

How Do I Expand My Game?
by bashfrog
2015-06-14 11:34:43

List of Learning Resources
by PocketCrafter7
2015-05-31 05:37:30

Intersection Methods
by Roquen
2015-05-29 08:19:33

List of Learning Resources
by SilverTiger
2015-05-05 10:20:32

How to: JGO Wiki
by Mac70
2015-02-17 20:56:16

2D Dynamic Lighting
by ThePixelPony
2015-01-01 20:25:42

How do I start Java Game Development?
by gouessej
2014-12-27 19:41:21 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!