#!/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 26.677325963974003 57.5189342670126 -gcp 10521.0 0.0 26.67657494544983 57.49243853334086 -gcp 10521.0 10626.0 26.627318859100345 57.4923347489098 -gcp 0.0 10626.0 26.627587080001835 57.51907254536282 Aluksne-1989-1185/Aluksne-1989-1185-174.jpg Aluksne-1989-1185-174.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1014.0 1071.0\n1047.0 9591.0\n9489.0 9543.0\n9453.0 1017.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-174.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-174.vrt Aluksne-1989-1185-174.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-174.cut.vrt Aluksne-1989-1185-174.xyz