#!/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 26.99079036712647 57.4351566241096 -gcp 10506.0 0.0 26.992828845977783 57.40872720909279 -gcp 10506.0 10596.0 26.944323778152466 57.407848789553675 -gcp 0.0 10596.0 26.942156553268436 57.43392078827223 Aluksne-1989-1186/Aluksne-1989-1186-43.jpg Aluksne-1989-1186-43.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1143.0 984.0\n1077.0 9486.0\n9510.0 9534.0\n9579.0 1020.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-43.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-43.vrt Aluksne-1989-1186-43.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-43.cut.vrt Aluksne-1989-1186-43.xyz