#!/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 26.989864368014565 57.445573380578914 -gcp 10506.0 0.0 26.991707960302662 57.41965359257441 -gcp 10506.0 13392.0 26.929863596155602 57.41827915924945 -gcp 0.0 13392.0 26.928384784293527 57.44474755656885 Aluksne-1989-1186/Aluksne-1989-1186-44.jpg Aluksne-1989-1186-44.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1170.0 1020.0\n9534.0 1044.0\n9492.0 9480.0\n1122.0 9486.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-44.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-44.vrt Aluksne-1989-1186-44.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-44.cut.vrt Aluksne-1989-1186-44.xyz