#!/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 26.740874331474306 57.442533148398695 -gcp 10506.0 0.0 26.74032179641724 57.41621197139013 -gcp 10506.0 10584.0 26.690934020996096 57.41628707791953 -gcp 0.0 10584.0 26.69085891914368 57.44274967525919 Aluksne-1989-1186/Aluksne-1989-1186-154.jpg Aluksne-1989-1186-154.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1128.0 1113.0\n9651.0 1071.0\n9672.75 9511.5\n1164.0 9546.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-154.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-154.vrt Aluksne-1989-1186-154.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-154.cut.vrt Aluksne-1989-1186-154.xyz