Rotation
glRotatef() rotates the model around the origin of the Coordinates System
In order to rotate around another model's centre :

1) Translate the model's centre to the origin
2) Rotate the model
3) Translate the model's centre back to its normal position

glMatrixMode(GL_TEXTURE); glLoadIdentity()*; glMatrixMode(GL_PROJECTION); glLoadIdentity()*; glFrustum / glOrtho(l,r,b,t,n,f); glMatrixMode(GL_MODELVIEW); glLoadIdentity()*; glTranslatef( 0., 0., -distance ); glTranslatef(+ctr.x, +ctr.y, +ctr.z); glRotatef( angle, x, y, z ); glTranslatef(-ctr.x, -ctr.y, -ctr.z); glVertex3fv(vcoord[i]);