#! /bin/bash
# Last edited on 2012-01-04 18:19:14 by stolfilocal

imgA="$1"; shift;
imgB="$1"; shift;
mag="$1"; shift;

infile="matrices/bm-match-${imgA}-${imgB}.txt"

gnuplot <<EOF
set term x11
set size ratio -1

mag=(${mag})

unset key

mdx(dummy) = (column(1)+column(3))/2
mdy(dummy) = (column(2)+column(4))/2
dpx(dummy) = mag*(column(3)-column(1))
dpy(dummy) = mag*(column(4)-column(2))

plot \
  "${infile}" using (mdx(0)):(mdy(0)):(dpx(0)):(dpy(0)) with vectors lt 1 head filled size character 1,20,90, \
  "" using (mdx(0)):(mdy(0)) with points lt 0 pt 7
pause 300

EOF