#!/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 26.837018499062143 57.48951356130457 -gcp 11247.0 0.0 26.832218833057915 57.46200749091441 -gcp 11247.0 11361.0 26.77954475263913 57.46415964428465 -gcp 0.0 11361.0 26.785335940361026 57.492603595378036 Aluksne-1989-1186/Aluksne-1989-1186-110.jpg Aluksne-1989-1186-110.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1065.0 1710.0\n9432.0 945.0\n10185.0 9417.0\n1800.0 10176.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-110.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-110.vrt Aluksne-1989-1186-110.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-110.cut.vrt Aluksne-1989-1186-110.xyz