#!/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 3600.0 3696.0 25.549733333333332 56.38473333333334 -gcp 44583.0 3330.0 26.743133333333333 56.423116666666665 -gcp 44787.0 32862.0 26.789983333333332 55.94805 -gcp 3813.0 33402.0 25.6084 55.9133 1915_3verst_de_126k/loc/Reihe_X_Blatt_5_Illuksst_1915_loc.jpg Reihe_X_Blatt_5_Illuksst_1915_loc.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "3698.25 18552.001665741256\n3600.0 3696.0\n24058.5 3469.475846751805\n44583.0 3330.0\n44641.5 18112.5091615769\n44787.0 32862.0\n24291.75 33156.76374236535\n3813.0 33402.0" | \
  gdaltransform -tps -output_xy Reihe_X_Blatt_5_Illuksst_1915_loc.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Reihe_X_Blatt_5_Illuksst_1915_loc.vrt Reihe_X_Blatt_5_Illuksst_1915_loc.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Reihe_X_Blatt_5_Illuksst_1915_loc.cut.vrt Reihe_X_Blatt_5_Illuksst_1915_loc.xyz