#!/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 26.924788085810587 57.38025617647484 -gcp 10614.0 0.0 26.924219573647758 57.35455594076525 -gcp 10614.0 10692.0 26.87587349107006 57.3544585799356 -gcp 0.0 10692.0 26.876291799528058 57.38009798450407 Aluksne-1989-1186/Aluksne-1989-1186-70.jpg Aluksne-1989-1186-70.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1062.0 1221.0\n9549.0 1101.0\n9645.0 9528.0\n1149.0 9636.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-70.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-70.vrt Aluksne-1989-1186-70.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-70.cut.vrt Aluksne-1989-1186-70.xyz