#!/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 26.584169133186343 57.44541889816195 -gcp 10578.0 0.0 26.584871871948245 57.41839778701088 -gcp 10578.0 10626.0 26.533391611099248 57.41832846474905 -gcp 0.0 10626.0 26.533895866394047 57.445447767390526 Aluksne-1989-1186/Aluksne-1989-1186-208.jpg Aluksne-1989-1186-208.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1095.0 1008.0\n9570.0 1068.0\n9489.0 9483.0\n1008.0 9429.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-208.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-208.vrt Aluksne-1989-1186-208.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-208.cut.vrt Aluksne-1989-1186-208.xyz