#!/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 26.55362728309632 57.422576201503716 -gcp 10506.0 0.0 26.552672416687017 57.395953626518065 -gcp 10506.0 10524.0 26.502698629379275 57.396277326969766 -gcp 0.0 10524.0 26.503471105575564 57.42299217573427 Aluksne-1989-1186/Aluksne-1989-1186-211.jpg Aluksne-1989-1186-211.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1092.0 1023.0\n9588.0 1026.0\n9552.0 9453.0\n1068.0 9438.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-211.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-211.vrt Aluksne-1989-1186-211.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-211.cut.vrt Aluksne-1989-1186-211.xyz