#!/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 1992.0 2025.0 21.789666666666665 57.15136666666667 -gcp 29520.0 2064.0 23.004 57.22128333333333 -gcp 29352.0 21873.0 23.093783333333334 56.74915 -gcp 1917.0 21753.0 21.898233333333334 56.677033333333334 1915_3verst_de_126k/greif/Reihe_VIII_Blatt_2_Goldingen_1914_greif.jpg Reihe_VIII_Blatt_2_Goldingen_1914_greif.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1992.0 2025.0\n15751.5 2015.9841754580789\n29520.0 2064.0\n29352.0 21873.0\n15646.5 21784.484175458078\n1917.0 21753.0" | \
  gdaltransform -tps -output_xy Reihe_VIII_Blatt_2_Goldingen_1914_greif.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Reihe_VIII_Blatt_2_Goldingen_1914_greif.vrt Reihe_VIII_Blatt_2_Goldingen_1914_greif.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Reihe_VIII_Blatt_2_Goldingen_1914_greif.cut.vrt Reihe_VIII_Blatt_2_Goldingen_1914_greif.xyz