camera cam1
{
  pixeldim  640 480
  worlddim  8 6
  viewpoint 4 3 6
}

material green
{
   ambient 0  5 0
}

material yellow
{
   ambient  5  4 0
}

plane leftwall
{
   material green
   normal 3 0 1
   point  1 0 0
}
plane rightwall
{
   material yellow
   normal -3 0 1
   point   7  0 0
}
material gray
{
   ambient 2 2 2
}

plane floor
{
   material gray
   normal 0 1 0
   point 0 -0.2 0
}