#!/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 26.715402603149414 57.57836287814557 -gcp 11397.0 0.0 26.70864343643189 57.550281224678606 -gcp 11397.0 11454.0 26.65419459342957 57.55414949237984 -gcp 0.0 11454.0 26.66260600090027 57.58288959240595 Aluksne-1989-1185/Aluksne-1989-1185-167.jpg Aluksne-1989-1185-167.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1035.0 1938.0\n1857.0 10347.0\n10347.0 9519.0\n9543.0 1110.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-167.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-167.vrt Aluksne-1989-1185-167.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-167.cut.vrt Aluksne-1989-1185-167.xyz