syncview

#!/bin/bash

# This is intended to be a simple nifti viewer.You can specify files to open by GUI.
# MRtrix3 and zenity are prerequisite.
# To learn how to use it, run "syncview h".

i=0
# set mrview window size by display size
dHL=$(xdpyinfo | grep dimensions | awk '{print $2}' | sed -e "s/x/ /" | awk '{print $1}')
dVL=$(xdpyinfo | grep dimensions | awk '{print $2}' | sed -e "s/x/ /" | awk '{print $2}')
mHL=$((dHL/30*9))
mVL=$((dVL/20*8))

# intensity range option
case $1 in
    d) echo "Default intensity range is set."
       IR_OPTION="" ;;
    h) cat <<- EOF
	# This script is to open mrview windows with synchronized focus.
	# "syncview" shows with intensity range 0 to 5000.
	# "syncview d" shows with default(each window with different) intensity.
	# "syncview s min max" specifies intensity range min to max.
	# "syncview h" shows this help.
	EOF
        exit ;;
    s*) echo "Intensity range is $2 to $3."
       IR_OPTION="-intensity_range $2,$3" ;;
    *) echo "Intensity range is 0 to 5000."
       IR_OPTION="-intensity_range 0,5000" ;;
esac
    
# select files and open mrview
while true
do
  file=$(zenity --file-selection --filename=$PWD)
  if [ "$file" != "" ]; then
   echo "opening $file ..."
   x=$((i%3*mHL))
   [[ i -le 2 ]] && y=0
   [[ i -gt 2 ]] && y=$((mVL*7/6))
   mrview $file -sync.focus -focus false $IR_OPTION -position $x,$y -size $mHL,$mVL &
   2> /dev/null
   i=$((i+1))
  else 
    break
  fi
done