Hi !
Featured games (90)
games approved by the League of Dukes
Games in Showcase (684)
Games in Android Showcase (196)
games submitted by our members
Games in WIP (752)
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  
  Question about rotated bounding rectangles  (Read 1470 times)
0 Members and 1 Guest are viewing this topic.
Offline Porlus

Junior Devvie

« Posted 2013-02-05 00:52:52 »

Hi all, is it more efficient to use the separate axis theorem for 2D rotated bounding box collision checks or is it better to just rotate the 4 corners of each box, using those 4 corners to make 4 lines and then just do line-line collision checks again each rectangle side? In either case I'll have outer bounding circles to check they're in range to reduce the amount of SAT/line-line checks are performed.
Also if anyone can think of any positive/negative points for using either I'd appreciate it. Smiley


Offline DrHalfway
« Reply #1 - Posted 2013-02-05 01:40:03 »

I personally use SAT for Rotated bounding box collisions, it is very fast and accurate and it can be expanded for collision detection between rotated 3D boxes and polygons. Although for 3D, it is commonly better to use an algorithm called GJK (Gilbert–Johnson–Keerthi) which will outperform SAT for most 3D cases.

Offline Porlus

Junior Devvie

« Reply #2 - Posted 2013-02-05 01:43:00 »

Thanks for your quick reply, I'll look it up. Smiley
Pages: [1]
  ignore  |  Print  
You cannot reply to this message, because it is very, very old.

orrenravid (284 views)
2016-07-16 03:57:23

theagentd (352 views)
2016-07-11 14:28:54

Hydroque (439 views)
2016-07-06 05:56:57

Hydroque (599 views)
2016-07-03 08:52:54

GrandCastle (456 views)
2016-07-01 09:13:47

GrandCastle (446 views)
2016-07-01 09:09:45

CopyableCougar4 (500 views)
2016-06-25 16:56:52

Hydroque (453 views)
2016-06-22 02:17:53

SwampChicken (417 views)
2016-06-20 13:22:57

SwampChicken (315 views)
2016-06-20 13:22:49
Making a Dynamic Plugin System
by Hydroque
2016-06-25 00:13:25

Java Data structures
by BinaryMonkL
2016-06-13 21:22:09

Java Data structures
by BinaryMonkL
2016-06-13 21:20:42

FPS Camera Tutorial
by Hydroque
2016-05-22 05:40:58

Website offering 3D Models specifically for games for free
by vusman
2016-05-18 17:23:09

Website offering 3D Models specifically for games for free
by vusman
2016-05-09 08:50:56

Website offering 3D Models specifically for games for free
by vusman
2016-05-06 11:10:21

Website offering 3D Models specifically for games for free
by vusman
2016-04-29 12:56:17 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!