#!/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 26.990554332733158 57.45714925550748 -gcp 10503.0 0.0 26.991133689880375 57.430628872356664 -gcp 10503.0 10581.0 26.94328308105469 57.42996467798454 -gcp 0.0 10581.0 26.94057941436768 57.45622870657893 Aluksne-1989-1186/Aluksne-1989-1186-45.jpg Aluksne-1989-1186-45.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1143.75 1010.25\n9565.5 1039.5\n9501.0 9530.625\n1080.75 9504.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-45.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-45.vrt Aluksne-1989-1186-45.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-45.cut.vrt Aluksne-1989-1186-45.xyz