#!/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 26.990035580238008 57.5000963705729 -gcp 11007.0 0.0 26.988816261291507 57.47278917094194 -gcp 11007.0 11109.0 26.937270397071256 57.472936943272195 -gcp 0.0 11109.0 26.938174406302412 57.501197826737865 Aluksne-1989-1186/Aluksne-1989-1186-49.jpg Aluksne-1989-1186-49.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1062.0 1554.0\n9456.0 1020.0\n9963.0 9495.0\n1557.0 10020.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-49.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-49.vrt Aluksne-1989-1186-49.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-49.cut.vrt Aluksne-1989-1186-49.xyz