anyone here can help me with some 3D programming stuff? - Singapore's Online Community

**micxiao** · 10-10-2007, 12:00 PM

I'm a beginner in 3D programming, and i'm having a little bit of trouble understanding how to use quaternions to calculate rotation of objects.

Can anyone explain in simple terms how to make use of quaternions?

For example, if i want to rotate a cube 45 degrees along the y-axis, how do I express this in a quaternion?

(I want to use quaternions as currently i'm experiencing gimbal lock with sequencial rotations and i heard quaternions are the solution)

**Fel** · 11-10-2007, 03:25 PM

You might wanna check out other forums for such information. It's hard to obtain such information in a forum like this.

**micxiao** · 11-10-2007, 03:37 PM

i gave up already. i think too difficult to understand. -_________-

**Fel** · 12-10-2007, 02:38 AM

Maybe this can help you.

http://www.cprogramming.com/tutorial...aternions.html

You should never give up.

You wouldn't happen to know anything about smb using a SAM database for user information.

pdbedit -- editing the logon scripts directly using pdbedit is throwing an error which dosen't make sense cause it's been verified.

Know if the pdbedit project is being tracked? Maybe i can submit a bug report if it is.

Whos the maintainer? Any idea?

Sorry for the hijacking.. don't see the point of starting another thread. You're the high IQ guy right? ^-^

Maybe you know, haha.

**micxiao** · 12-10-2007, 02:53 PM

got the quaternion thingy working liao =)

hehe my objects are rotating very nicely~

wat's pbdedit?

**Fel** · 13-10-2007, 09:18 AM

pdbedit is a database editor. It's used typically for typical SAM samba databases.

I actually fixed the issue by setting the logon drive and logon home to null values. This allowed me to map whatever i wanted by setting the logon scripts to go by %U and by renaming my logon scripts to each user's individual username.

It would have been a lot less troublesome if i could specify each user's individual logon script path with pdbedit. For some reason, it throws an error saying it cant locate the path, even though the path and syntax is correct. I suspect it's a bug. Wanted to submit it if it hadn't already been submitted.

So did the link i gave you work for you? Did it help?

**micxiao** · 17-10-2007, 05:32 PM

well, it was mostly my brother who gave me idea on how to do the quaternion thingys. he's learning game programming too. :p

database ar? i only know basic database management. nothing specialized.

like SQL statements etc

**Fel** · 17-10-2007, 10:15 PM

well, it's not an sql database. Besides, sql statement inputs are old school.

**micxiao** · 18-10-2007, 12:20 PM

	Quote:			Originally Posted by Fel
	well, it's not an sql database. Besides, sql statement inputs are old school.

old school...? you mean there are more efficient ways for games to interact with databases?

does C++ have support for the "non old-school" ways then?

**Fel** · 18-10-2007, 12:52 PM

No dear, i didn´t mean it from a programming pov.

I meant that from an administration pov. Database administration.

I understand that for game programming, statements would be the best and only way to go.

**micxiao** · 18-10-2007, 12:59 PM

ok~ misunderstanding then~ haha

anyway i'm more focused on software programming so if you or other peeps have (not too complicated) debugging issues feel free to ask me and hopefully we can work it out.