I drew a 3D rect with length from -x to x. and on top of this rect ( in the middle) i drew a smaller rect of length -(x-w)/2 to (x-w)/2 where w < or equal to x. I want to translate this smaller rect to the left till it reach the edge whereby the edges of both rect are aligned properly so i translate by
glTranslatef ((-x-w)/2,0.0f,0.0f);
but when w=x, by right there should be no small rect showing but i get one face at the edge. Other than that it is okie, can someone point out my mistake?