Hi.. in a word.. i just can make a rotation to left and rigth. and also go to front and behind. can u please tell me how to make camera collision araund world using parameters in gluLookAt.thx i know that to make a collision, wehave to know the normal of our plane. it is something that makes me confuse. i dont know how to make the relation to my plane(rectangle) and the normal. can u give me some or maybe many clue.... please... thx -irma- i maybe not clever.. but i'll always and alwas try.. :)