#!/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 26.646315916061404 57.40368772757918 -gcp 10611.0 0.0 26.64758728313446 57.37735628218783 -gcp 10611.0 10674.0 26.598848239898686 57.37657841683153 -gcp 0.0 10674.0 26.597394482612614 57.40316459468672 Aluksne-1989-1186/Aluksne-1989-1186-11.jpg Aluksne-1989-1186-11.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1167.0 1014.0\n9580.5 1123.5\n9477.0 9603.0\n1044.75 9523.5" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-11.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-11.vrt Aluksne-1989-1186-11.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-11.cut.vrt Aluksne-1989-1186-11.xyz