#!/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 2169.0 2373.0 26.789983333333332 55.94805 -gcp 29535.0 2322.0 27.96998333333333 55.976483333333334 -gcp 29493.0 21870.0 28.0002 55.501216666666664 -gcp 2130.0 21888.0 26.836 55.47593333333333 1915_3verst_de_126k/greif/Reihe_XI_Blatt_6_Drissa_1914_greif.jpg Reihe_XI_Blatt_6_Drissa_1914_greif.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2169.0 12150.010827318156\n2169.0 2373.0\n15852.0 2316.7329261521377\n29535.0 2322.0\n29493.0 21870.0\n15810.0 21891.00666296502\n2130.0 21888.0" | \
  gdaltransform -tps -output_xy Reihe_XI_Blatt_6_Drissa_1914_greif.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Reihe_XI_Blatt_6_Drissa_1914_greif.vrt Reihe_XI_Blatt_6_Drissa_1914_greif.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Reihe_XI_Blatt_6_Drissa_1914_greif.cut.vrt Reihe_XI_Blatt_6_Drissa_1914_greif.xyz