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create_gdal_tms_target_window.sh
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create_gdal_tms_target_window.sh
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#!/bin/bash
#
# ***************************************************************************
# Name : GDAL TMS with TargetWindow
# Description : Create GDAL TMS with tag <TargetWindow> from image.
# Use for input in GDAL_WMS driver and use by QGIS for zoom to image in TMS format
# Arguments:
# $1: Image
# $2: url
# $3: zmax
#
# Dependencies : gdal 1.10.1 (gdalinfo, ogr2ogr)
#
# ***************************************************************************
# begin : 2015-10-10 (yyyy-mm-dd)
# copyright : (C) 2015 by Luiz Motta
# email : motta dot luiz at gmail.com
# ***************************************************************************
#
# Revisions
#
# 0000-00-00:
# - None
#
# ***************************************************************************
#
# Example:
# get_target_win.sh LC8_229-066_20140724_LGN00_r6g5b4.tif
#
# ***************************************************************************
# * *
# * This program is free software; you can redistribute it and/or modify *
# * it under the terms of the GNU General Public License as published by *
# * the Free Software Foundation; either version 2 of the License, or *
# * (at your option) any later version. *
# * *
# *************gdal_tms**************************************************************
#
calc_extent_json(){
local tmp_file=$(mktemp)
gdalinfo -nogcp -nomd -norat -noct $in_img > $tmp_file
local ul=$(cat $tmp_file | grep "Upper Left" | cut -d'(' -f2 | cut -d')' -f1 | sed 's/[[:blank:]]*//g')
local lr=$(cat $tmp_file | grep "Lower Right" | cut -d'(' -f2 | cut -d')' -f1 | sed 's/[[:blank:]]*//g')
local epsg=$(cat $tmp_file | grep EPSG | grep "]]$" | cut -d'[' -f2 | cut -d',' -f2 | cut -d']' -f1 | sed 's/"//g' )
rm $tmp_file
local ok_ul=$(expr length "$ul")
local ok_lr=$(expr length "$lr")
local ok_epsg=$(expr length "$epsg")
if [ $ok_ul -eq 0 -o $ok_lr -eq 0 -o $ok_epsg -eq 0 ] ; then
isok=0
return
fi
extent_json="{
\"type\": \"FeatureCollection\",
\"crs\": { \"type\": \"name\", \"properties\": { \"name\": \"urn:ogc:def:crs:EPSG::"$epsg"\" } },
\"features\": [
{ \"type\": \"Feature\",
\"properties\": { \"name\": \"UpperLeft\"},
\"geometry\": {
\"type\": \"Point\",
\"coordinates\": [ "$ul" ]
}
},
{ \"type\": \"Feature\",
\"properties\":{ \"name\": \"LowerRight\"},
\"geometry\": {
\"type\": \"Point\",
\"coordinates\": [ "$lr" ]
}
}
]
}"
isok=1
}
#
calc_target_window(){
local tmp_file=$(mktemp)
local extent_json3857="tmp.geojson"
local tmp_dir=$(mktemp -d)
echo $extent_json > $tmp_file
ogr2ogr -t_srs EPSG:3857 -f GeoJSON $tmp_dir"/"$extent_json3857 $tmp_file
#
local ulx=$(cat $tmp_dir"/"$extent_json3857 | grep "UpperLeft" | cut -d':' -f7 | cut -d',' -f1 | cut -d'[' -f2 | sed 's/[[:blank:]]*//g')
local uly=$(cat $tmp_dir"/"$extent_json3857 | grep "UpperLeft" | cut -d':' -f7 | cut -d',' -f2 | cut -d']' -f1 | sed 's/[[:blank:]]*//g')
local lrx=$(cat $tmp_dir"/"$extent_json3857 | grep "LowerRight" | cut -d':' -f7 | cut -d',' -f1 | cut -d'[' -f2 | sed 's/[[:blank:]]*//g')
local lry=$(cat $tmp_dir"/"$extent_json3857 | grep "LowerRight" | cut -d':' -f7 | cut -d',' -f2 | cut -d']' -f1 | sed 's/[[:blank:]]*//g')
# clean
rm -r $tmp_dir
rm $tmp_file
#
local ul="<UpperLeftX>"$ulx"</UpperLeftX><UpperLeftY>"$uly"</UpperLeftY>"
local lr="<LowerRightX>"$lrx"</LowerRightX><LowerRightY>"$lry"</LowerRightY>"
target_window="<TargetWindow>"$ul" "$lr"</TargetWindow>"
}
#
calc_gdal_tms(){
gdal_tms="<GDAL_WMS>
<Service name=\"TMS\">
<ServerUrl>"$url"/"$name_img".tms/\${z}/\${x}/\${y}.png</ServerUrl>
<SRS>EPSG:3857</SRS>
<ImageFormat>image/png</ImageFormat>
</Service>
<DataWindow>
<UpperLeftX>-20037508.34</UpperLeftX>
<UpperLeftY>20037508.34</UpperLeftY>
<LowerRightX>20037508.34</LowerRightX>
<LowerRightY>-20037508.34</LowerRightY>
<TileLevel>"$zmax"</TileLevel>
<TileCountX>1</TileCountX>
<TileCountY>1</TileCountY>
<YOrigin>bottom</YOrigin>
</DataWindow>
"$target_window"
<Projection>EPSG:3857</Projection>
<BlockSizeX>256</BlockSizeX>
<BlockSizeY>256</BlockSizeY>
<BandsCount>4</BandsCount>
<ZeroBlockHttpCodes>204,303,400,404,500,501</ZeroBlockHttpCodes>
<ZeroBlockOnServerException>true</ZeroBlockOnServerException>
<Cache>
<Path>/tmp/cache_"$name_img".tms</Path>
</Cache>
</GDAL_WMS>"
}
#
msg_error(){
local name_script=$(basename $0)
echo "Usage: $name_script <image> <url> <zmax>" >&2
echo "<image> is the image" >&2
echo "* NEED keys: Lower Right, Upper Left and EPSG by output: gdalinfo image" >&2
echo "<url> URL for TMS" >&2
echo "<zmax> Maximum zoom level" >&2
exit 1
}
#
totalargs=3
#
if [ $# -ne $totalargs ] ; then
msg_error
exit 1
fi
#
in_img=$1
url=$2
zmax=$3
#
if [ ! -f "$in_img" ] ; then
echo "The file '$in_img' not exist" >&2
exit 1
fi
#
basename_img=$(basename $in_img)
name_img=${basename_img%.*}
fgdal_tms_xml=$name_img"_tms.xml"
#
calc_extent_json
if [[ $isok == 0 ]]; then
msg_error
exit 1
fi
calc_target_window
calc_gdal_tms
echo $gdal_tms > $fgdal_tms_xml