// Last edited on 2005-08-29 22:03:13 by stolfi

// Generic camera declarations

#local asp = image_width/image_height;
#local rad = scene_radius/camera_dst;

camera { 
  location camera_ctr + camera_dst * camera_dir/vlength(camera_dir)
  sky camera_upp
  right   -2.0*rad*sqrt(asp)*x
  up       2.0*rad/sqrt(asp)*y 
  look_at camera_ctr
}