Am Mittwoch, 8. März 2006 14:29 schrieb minh thu:

I thought the z axis increases towards the user. but

translate (Vector3 (-0.2) (-0.2) (-0.2::GLfloat))

translates a bit towards the left, down and *the user*.

Is it the standard opengl behavior ?

HOpenGL does nothing special here, what you experience is standard OpenGL behaviour. Having a look at chapter 3 of the famous Red Book might help you to see what's going on, especially the section "Viewing and Modeling Transformations": http://www.rush3d.com/reference/opengl-redbook-1.1/chapter03.html Cheers, S.