#!/bin/tcsh -f
#
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# copyright: 2016 to the present, california institute of technology.
# all rights reserved. united states government sponsorship acknowledged.
#
# THESE SCRIPTS ARE PROVIDED TO YOU "AS IS" WITH NO WARRANTIES OF CORRECTNESS. USE AT YOUR OWN RISK.
#
# Author: David Bekaert
# Organization: Jet Propulsion Laboratory, California Institute of Technology
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

set curdir = `pwd` 
echo $curdir

# extract the geom suffix in case it is specified
set geom_suffix = `grep geom_suffix  input_file | awk '{print $2}'`
set overwrite_flag = `grep overwrite input_file | awk '{print $2}'`

# adding the overwrite_flag, set by default to overwrite files
if ( "$overwrite_flag" == "" ) then
    set overwrite_flag = y
endif
if ( "$overwrite_flag" != "y" & "$overwrite_flag" != "yes" & "$overwrite_flag" != "n" & "$overwrite_flag" != "no") then
    set overwrite_flag = y
    echo "Did not recognize the overwrite option, will set to overwrite files..."
endif
if ( "$overwrite_flag" == "no") then
    set overwrite_flag = n
endif


# setting the filenames 
set los_file = $curdir/reference/geom/los.rdr$geom_suffix

# extracting the enu conversion files
if ( -f $curdir/e.raw & "$overwrite_flag" == "n" ) then
    echo east2los file exist and will not be overwritten
else
    echo extracting east2los file from isce
    imageMath.py --eval='sin(rad(a_0))*cos(rad(a_1+90))' --a=$los_file -t FLOAT -s BIL -o $curdir/e.raw
    echo
endif
echo

if ( -f $curdir/n.raw & "$overwrite_flag" == "n" ) then
    echo north2los file exist and will not be overwritten
else
    echo extracting north2los file from isce
    imageMath.py --eval='sin(rad(a_0)) * sin(rad(a_1+90))' --a=$los_file -t FLOAT -s BIL -o $curdir/n.raw
    echo
endif
echo

if ( -f $curdir/u.raw & "$overwrite_flag" == "n" ) then
    echo up2los file exist and will not be overwritten
else
    echo extracting up2los file from isce
    imageMath.py --eval='cos(rad(a_0))' --a=$los_file  -t FLOAT -s BIL -o $curdir/u.raw
    echo
endif
echo