#!/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 26.55535999011994 57.44482017839681 -gcp 10506.0 0.0 26.554356843948366 57.41800553976511 -gcp 10506.0 10548.0 26.504855125427245 57.41847347939355 -gcp 0.0 10548.0 26.504967778205874 57.444950088321065 Aluksne-1989-1186/Aluksne-1989-1186-213.jpg Aluksne-1989-1186-213.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1023.0 1074.0\n9531.0 1050.0\n9528.0 9483.0\n1041.0 9507.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-213.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-213.vrt Aluksne-1989-1186-213.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-213.cut.vrt Aluksne-1989-1186-213.xyz