#!/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 26.67864504528046 57.39141959625242 -gcp 10731.0 0.0 26.679905683517458 57.36428653258125 -gcp 10731.0 10872.0 26.630264490127566 57.36350549723739 -gcp 0.0 10872.0 26.62818309593201 57.39019949632838 Aluksne-1989-1186/Aluksne-1989-1186-177.jpg Aluksne-1989-1186-177.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1317.0 1002.0\n9729.0 1272.0\n9432.0 9798.0\n1008.0 9519.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-177.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-177.vrt Aluksne-1989-1186-177.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-177.cut.vrt Aluksne-1989-1186-177.xyz