#!/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 27.020651660798396 57.69710215341514 -gcp 10491.0 0.0 27.02056623642297 57.671313525438606 -gcp 10491.0 10608.0 26.972398984805913 57.67148755359193 -gcp 0.0 10608.0 26.972645973439548 57.69710146220503 Aluksne-1989-1185/Aluksne-1989-1185-94.jpg Aluksne-1989-1185-94.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1053.0 990.0\n1026.0 9498.0\n9453.0 9498.0\n9480.0 1008.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-94.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-94.vrt Aluksne-1989-1185-94.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-94.cut.vrt Aluksne-1989-1185-94.xyz