#!/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 0.0 0.0 21.346145868301395 56.68334691608077 -gcp 10548.0 0.0 21.346754885725645 56.65602620240062 -gcp 10548.0 12222.0 21.28941945955787 56.65554305570867 -gcp 0.0 12222.0 21.288789875404706 56.682813473054956 Aizpute-1988-991/Aizpute-1988-991-119.jpg Aizpute-1988-991-119.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "561.0 903.0\n10443.0 861.0\n10476.0 10746.0\n601.5 10792.5" | \
  gdaltransform -tps -output_xy Aizpute-1988-991-119.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aizpute-1988-991-119.vrt Aizpute-1988-991-119.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aizpute-1988-991-119.cut.vrt Aizpute-1988-991-119.xyz