#!/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 26.619585948944092 57.508861704339424 -gcp 10506.0 0.0 26.616270738601685 57.482020641170415 -gcp 10506.0 10524.0 26.566054624557495 57.48357764586224 -gcp 0.0 10524.0 26.56899432563782 57.51064844839273 Aluksne-1989-1186/Aluksne-1989-1186-197.jpg Aluksne-1989-1186-197.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1035.0 1083.0\n9522.0 1029.0\n9549.0 9465.0\n1056.0 9507.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-197.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-197.vrt Aluksne-1989-1186-197.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-197.cut.vrt Aluksne-1989-1186-197.xyz