#!/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 26.686799277260548 57.40046401099096 -gcp 11997.0 0.0 26.676822080112384 57.37040371676918 -gcp 11997.0 11934.0 26.623073206612492 57.37551750497897 -gcp 0.0 11934.0 26.63181390540469 57.40519136010863 Aluksne-1989-1186/Aluksne-1989-1186-178.jpg Aluksne-1989-1186-178.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1191.0 2574.0\n9405.0 1143.0\n10806.0 9525.0\n2511.0 10938.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-178.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-178.vrt Aluksne-1989-1186-178.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-178.cut.vrt Aluksne-1989-1186-178.xyz