#!/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 27.018944513979385 57.428997637251044 -gcp 11271.0 0.0 27.024039319423824 57.402105963045614 -gcp 11271.0 11256.0 26.974611770912315 57.399078104207874 -gcp 0.0 11256.0 26.969358715136003 57.42628487462346 Aluksne-1989-1186/Aluksne-1989-1186-23.jpg Aluksne-1989-1186-23.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1890.0 936.0\n10278.0 1746.0\n9456.0 10230.0\n1059.0 9417.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-23.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-23.vrt Aluksne-1989-1186-23.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-23.cut.vrt Aluksne-1989-1186-23.xyz