#!/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 2226.0 1572.0 24.837216666666666 56.25 -gcp 16821.0 1551.0 25.337216666666666 56.25 -gcp 16854.0 14748.0 25.337216666666666 56 -gcp 2151.0 14742.0 24.837216666666666 56 bruno/Q17 1921_Ponedele.jpeg Q17 1921_Ponedele.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2226.0 1572.0\n16821.0 1551.0\n16854.0 14748.0\n2151.0 14742.0" | \
  gdaltransform -tps -output_xy Q17 1921_Ponedele.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Q17 1921_Ponedele.vrt Q17 1921_Ponedele.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Q17 1921_Ponedele.cut.vrt Q17 1921_Ponedele.xyz