#!/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 26.863878965377808 57.67799839647707 -gcp 11310.0 0.0 26.870294809341438 57.65026348830764 -gcp 11310.0 11541.0 26.81822776794434 57.64680162118551 -gcp 0.0 11541.0 26.81143641471863 57.67455638401933 Aluksne-1989-1185/Aluksne-1989-1185-85.jpg Aluksne-1989-1185-85.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2037.0 1083.0\n1146.0 9558.0\n9540.0 10431.0\n10425.0 1944.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-85.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-85.vrt Aluksne-1989-1185-85.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-85.cut.vrt Aluksne-1989-1185-85.xyz