Hi !
Featured games (85)
games approved by the League of Dukes
Games in Showcase (636)
Games in Android Showcase (178)
games submitted by our members
Games in WIP (688)
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  
  [Box2D] Pivot of body's rotation  (Read 730 times)
0 Members and 1 Guest are viewing this topic.
Offline trollwarrior1
« Posted 2014-08-17 18:18:27 »

In order to render my Box2D bodies correctly, I need to know the pivot that the body is rotated around. How can I retrieve such a thing?
Offline Riven

« JGO Overlord »

Medals: 1068
Projects: 4
Exp: 16 years

Hand over your head.

« Reply #1 - Posted 2014-08-17 20:03:23 »

Having never worked with Box2D myself... Google said the center of mass (and hence the pivot) can be found with MassData.

Hi, appreciate more people! Σ ♥ = ¾
Learn how to award medals... and work your way up the social rankings!
Offline pitbuller
« Reply #2 - Posted 2014-08-17 20:52:01 »

Rendering pivot is always the local coordinates origo.
Games published by our own members! Check 'em out!
Legends of Yore - The Casual Retro Roguelike
Offline trollwarrior1
« Reply #3 - Posted 2014-08-17 21:11:30 »

Ow wow. This was a stupid question to ask Cheesy I didn't realize that body.getAngle() + body.getPosition() is completely enough to render sprite correctly. Silly me Cheesy

I guess I have another question now. When my objects pick up just a little bit of speed (falling just for a few seconds) they seem to start jiggling around. Is this normal? (Its like rendering not at floats, but casting position of object to int, but not that bad looking, on a much smaller scale)
Pages: [1]
  ignore  |  Print  
You cannot reply to this message, because it is very, very old.

Dwinin (76 views)
2015-11-07 13:29:08

Rems19 (82 views)
2015-10-31 01:36:56

Rems19 (82 views)
2015-10-31 01:32:37

williamwoles (108 views)
2015-10-23 10:42:59

williamwoles (94 views)
2015-10-23 10:42:45

Jervac_ (113 views)
2015-10-18 23:29:12

DarkCart (138 views)
2015-10-16 00:58:11

KaiHH (119 views)
2015-10-11 14:10:14

KaiHH (160 views)
2015-10-11 13:26:18

BurntPizza (174 views)
2015-10-08 03:11:46
Rendering resources
by Roquen
2015-11-13 14:37:59

Rendering resources
by Roquen
2015-11-13 14:36:58

Math: Resources
by Roquen
2015-10-22 07:46:10

Networking Resources
by Roquen
2015-10-16 07:12:30

Rendering resources
by Roquen
2015-10-15 07:40:48

Math: Inequality properties
by Roquen
2015-10-01 13:30:46

Math: Inequality properties
by Roquen
2015-09-30 16:06:05

HotSpot Options
by Roquen
2015-08-29 11:33:11 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!