#!/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 26.58415933227539 57.48927659433397 -gcp 10506.0 0.0 26.58415933227539 57.46218316865 -gcp 10506.0 10554.0 26.53324584388733 57.462563985768085 -gcp 0.0 10554.0 26.53405587100983 57.48931119558011 Aluksne-1989-1186/Aluksne-1989-1186-204.jpg Aluksne-1989-1186-204.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1014.0 999.0\n9489.0 948.0\n9522.0 9375.0\n1041.0 9432.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-204.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-204.vrt Aluksne-1989-1186-204.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-204.cut.vrt Aluksne-1989-1186-204.xyz