#!/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 26.712892055511478 57.56824907322881 -gcp 11037.0 0.0 26.7088258266449 57.54089090815919 -gcp 11037.0 11067.0 26.6559112071991 57.54283710755341 -gcp 0.0 11067.0 26.660749912261966 57.571148881442554 Aluksne-1989-1185/Aluksne-1989-1185-168.jpg Aluksne-1989-1185-168.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1044.0 1554.0\n1521.0 9999.0\n10041.0 9516.0\n9582.0 1074.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-168.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-168.vrt Aluksne-1989-1185-168.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-168.cut.vrt Aluksne-1989-1185-168.xyz