#!/bin/bash

GDAL_TILE_PROCESSES=16
GDAL_TILE_ZOOMS=8-14
GDAL_SAMPLING_WARP=cubic
GDAL_SAMPLING_TILE=antialias

# Create virtual dataset with coordinates
gdal_translate -of VRT -a_srs EPSG:4326 -outsize 300% 300% -gcp 2352.0 2307.0 26.743133333333333 56.423116666666665 -gcp 29799.0 2382.0 27.939783333333335 56.44968333333333 -gcp 29691.0 21888.0 27.96998333333333 55.976483333333334 -gcp 2238.0 21801.0 26.789983333333332 55.94805 1915_3verst_de_126k/greif/Reihe_X_Blatt_6_Dagda_1914_greif.jpg Reihe_X_Blatt_6_Dagda_1914_greif.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2299.5 12058.502498611882\n2352.0 2307.0\n16059.0 2364.0108273181568\n29799.0 2382.0\n29736.75 12135.750416435314\n29691.0 21888.0\n15968.25 21818.985008328706\n2238.0 21801.0" | \
  gdaltransform -tps -output_xy Reihe_X_Blatt_6_Dagda_1914_greif.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Reihe_X_Blatt_6_Dagda_1914_greif.vrt Reihe_X_Blatt_6_Dagda_1914_greif.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Reihe_X_Blatt_6_Dagda_1914_greif.cut.vrt Reihe_X_Blatt_6_Dagda_1914_greif.xyz