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3d math problem

NeHe Productions Affiliates

Started by Styles August 03, 2000 12:10 PM

2 comments, last by Styles 23 years, 11 months ago

Styles

122

Author

August 03, 2000 12:10 PM

hi i am currently working on a space game (sort of) and i want to be able to rotate on y-axis with the left and right arrow keys and rotate on the x-axis with the up and down arrow keys and then move forward with the space-bar. So how do you do that. please help! lots of source code would be nice. Thanks! Styles shit! Edited by - styles on 8/4/00 9:44:31 PM

Styles peace!

tcs

122

August 03, 2000 02:19 PM

You can perform such rotations with sin/cos. Make sure you know trigonometry. You might even try Quaternions. Do you need source for a Quaternion class ?

Tim

--------------------------
www.gamedev.net/hosted/glvelocity
glvelocity.gamedev.net
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Tim--------------------------glvelocity.gamedev.netwww.gamedev.net/hosted/glvelocity

drBones

123

August 04, 2000 06:49 AM

Hi...
everything you need is glRotate*() or glTranslate*();

a is angle...
glRotatef(a,1,0,0) rotates around x axis
glRotatef(a,0,1,0) rotates around y axis ...

glRotatef(a,1,1,0) rotates around y=x line...

and what about glRotatef(a, 1.0f, 0.5f, 0)

if you don''t get what I''m talking about ( I dont ! ) everything is in NeHe''s tutorials... and the RedBook

Pet

Pet

Promag

132

August 04, 2000 05:14 PM

You can use gluLookAt

You always save the eye position, the up vector and the center position

then you just rotate or the center position or the up vector relativement to the eye position

PROgrammer