#!/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 26.677004098892212 57.57294963813203 -gcp 10497.0 0.0 26.67701482772827 57.5459116604651 -gcp 10497.0 10566.0 26.62722229957581 57.5462974006606 -gcp 0.0 10566.0 26.62772655487061 57.57264472393542 Aluksne-1989-1185/Aluksne-1989-1185-179.jpg Aluksne-1989-1185-179.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1068.0 987.0\n1044.0 9510.0\n9471.0 9492.0\n9513.0 1023.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-179.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-179.vrt Aluksne-1989-1185-179.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-179.cut.vrt Aluksne-1989-1185-179.xyz