#!/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 26.80275936698914 57.44931768016338 -gcp 10506.0 0.0 26.802410679817203 57.423120777319085 -gcp 10506.0 10602.0 26.75375561141968 57.42291571943607 -gcp 0.0 10602.0 26.753659051895145 57.449519737224094 Aluksne-1989-1186/Aluksne-1989-1186-130.jpg Aluksne-1989-1186-130.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1092.0 1035.0\n9507.0 1044.0\n9471.0 9555.0\n1053.0 9522.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-130.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-130.vrt Aluksne-1989-1186-130.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-130.cut.vrt Aluksne-1989-1186-130.xyz