How do I rotate or translate individual object instances in OPENGL?

Question

Hey guys

Lets say i have a scene with four cubes. How do I say rotate/translate only two of these cubes in OpenGL without changing the others using glrotatef anf gltranslate? I dont wanna define my own homogeneous co-ordinates.

Answer 1

1. You draw your first two cubes as usual
2. Push the view-model matrix (glPushMatrix(GL_MODELVIEW_MATRIX))
3. Call glRotate/glTranslate to setup the rotation of the two cubes which you want to draw in a different way
4. Draw the other two cubes
5. Pop the original view-model matrix (glPopMatrix(GL_MODELVIEW_MATRIX))