--- /dev/null
+#!/bin/bash
+
+file=$1
+init=$2
+
+sicnt=`sed -n 6p $file | awk '{ print $1 }'`
+ccnt=`sed -n 6p $file | awk '{ print $2 }'`
+((cnt=sicnt+ccnt))
+
+((offset=8))
+
+((count=1))
+
+x=0
+y=0
+z=0
+
+while [ $count -le $cnt ]; do
+
+ ((ln=count+offset))
+
+ temp="`sed -n ${ln}p $file`"
+ xa=`echo $temp | awk '{ print $1 }'`
+ ya=`echo $temp | awk '{ print $2 }'`
+ za=`echo $temp | awk '{ print $3 }'`
+
+ temp="`sed -n ${ln}p $init`"
+ xi=`echo $temp | awk '{ print $1 }'`
+ yi=`echo $temp | awk '{ print $2 }'`
+ zi=`echo $temp | awk '{ print $3 }'`
+
+ results=`echo $xa $ya $za $xi $yi $zi | awk '{
+ xa=$1
+ if($1<0.0)
+ xa=$1+1.0
+ if($1>1.0)
+ xa=$1-1.0
+ ya=$2
+ if($2<0.0)
+ ya=$2+1.0
+ if($2>1.0)
+ ya=$2-1.0
+ za=$3
+ if($3<0.0)
+ za=$3+1.0
+ if($3>1.0)
+ za=$3-1.0
+
+ xi=$4
+ if($4<0.0)
+ xi=$4+1.0
+ if($4>1.0)
+ xi=$4-1.0
+ yi=$5
+ if($5<0.0)
+ yi=$5+1.0
+ if($5>1.0)
+ yi=$5-1.0
+ zi=$6
+ if($6<0.0)
+ zi=$6+1.0
+ if($6>1.0)
+ zi=$6-1.0
+
+ dx=xa-xi
+ dy=ya-yi
+ dz=za-zi
+
+ if(dx>0.5)
+ dx-=1
+ else if(dx<-0.5)
+ dx+=1
+ if(dy>0.5)
+ dy-=1
+ else if(dy<-0.5)
+ dy+=1
+ if(dz>0.5)
+ dz-=1
+ else if(dz<-0.5)
+ dz+=1
+
+ print dx " " dy " " dz
+ }'`
+
+ dx=`echo $results | awk '{ print $1 }'`
+ dy=`echo $results | awk '{ print $2 }'`
+ dz=`echo $results | awk '{ print $3 }'`
+
+ x=`echo $x $dx | awk '{ print $1+$2 }'`
+ y=`echo $y $dy | awk '{ print $1+$2 }'`
+ z=`echo $z $dz | awk '{ print $1+$2 }'`
+
+ ((count+=1))
+
+done
+
+((count-=1))
+echo $x $y $z $count | awk '{ print $1/($4*3) " " $2/($4*3) " " $3/($4*3) }'
+