#!/usr/bin/awk -f
# A tiny, invented geometry clerk for a poster that declines perfect level.
# Run: awk -f crooked_poster.awk

BEGIN {
  width_cm = 42
  split("0.0 0.2 -0.4 0.6 -0.1 0.3 -0.5", readings, " ")

  print "THE CROOKED POSTER DESK"
  print "All measurements are invented; no wall was inconvenienced."
  print ""
  print "reading  left/right offset (cm)  tilt (degrees)  clerk's ruling"
  print "-------  ----------------------  --------------  ------------------------------"

  for (i = 1; i <= length(readings); i++) {
    offset = readings[i]
    angle = atan2(offset, width_cm) * 180 / atan2(0, -1)
    absolute = (angle < 0 ? -angle : angle)
    if (absolute < 0.25)
      ruling = "leave it; the room has larger crimes"
    else if (absolute < 0.60)
      ruling = "notice it politely, then make tea"
    else
      ruling = "straighten once; do not begin a doctrine"
    printf "%7d  %+22.1f  %+14.3f  %s\n", i, offset, angle, ruling
    total += angle
  }

  mean = total / length(readings)
  print ""
  printf "Mean imaginary tilt: %+0.3f degrees.\n", mean
  print "Finding: a rectangle may request attention without becoming a command."
}