#!/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 26.80500594902039 57.35448704570972 -gcp 10617.0 0.0 26.804839652061467 57.327975921567905 -gcp 10617.0 10701.0 26.75654085350037 57.32760238797131 -gcp 0.0 10701.0 26.755639631271364 57.35399794688543 Aluksne-1989-1186/Aluksne-1989-1186-121.jpg Aluksne-1989-1186-121.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1260.0 1023.0\n9654.0 1173.0\n9453.0 9675.0\n1062.0 9510.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-121.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-121.vrt Aluksne-1989-1186-121.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-121.cut.vrt Aluksne-1989-1186-121.xyz