for(int i=0;i<pointsInSpace.size();++i){
//draw rectnagle at (x,y,z)
}
(-1, -1, 0)
(-1, 1, 0)
( 1, -1, 0)
( 1, 1, 0)
up_dot_n_dot_n.X up_dot_n_dot_n.Y up_dot_n_dot_n.Z 0
n.X n.y n.z 0
up_dot_n.x up_dot_n.x up_dot_n.z 0
p.x p.y p.z 1