opengl matrix rotation quaternions

Question

Im trying to do a simple rotation of a cube about the x and y axis:

I want to always rotate the cube over the x axis by an amount x and rotate the cube over the yax

Answer 1

It would help a lot if you could give a more detailed explanation of what you are trying to do and how the results you are getting differ from the results you want. But in general using Euler angles for rotation has some problems, as combining rotations can result in unintuitive behavior (and in the worst case losing a degree of freedom.)

Quaternion slerp might be the way to go for you if you can find a single axis and a single angle that represent the rotation you want. But doing successive rotations around the X and Y axis using quaternions won't help you avoid the problems inherent in composing Euler rotations.

The post you link to seems to involve another problem though. The poster seems to have been translating his object and then doing his rotations, when he should have been rotating first and then translating.