#!/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 21.28787755966187 56.53466612873949 -gcp 10635.0 0.0 21.287255287170414 56.507438743813466 -gcp 10635.0 12384.0 21.230059862136844 56.50771996556262 -gcp 0.0 12384.0 21.23063921928406 56.534991519843096 Aizpute-1988-991/Aizpute-1988-991-16.jpg Aizpute-1988-991-16.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "111.0 1123.5\n525.0 11022.0\n10395.0 10590.0\n9948.0 690.0" | \
  gdaltransform -tps -output_xy Aizpute-1988-991-16.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aizpute-1988-991-16.vrt Aizpute-1988-991-16.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aizpute-1988-991-16.cut.vrt Aizpute-1988-991-16.xyz