#!/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 26.80348432545832 57.60034772342017 -gcp 11673.0 0.0 26.809564256967167 57.57163091744471 -gcp 11673.0 11679.0 26.75672094746886 57.56802277870366 -gcp 0.0 11679.0 26.74993891259641 57.596825372388444 Aluksne-1989-1185/Aluksne-1989-1185-128.jpg Aluksne-1989-1185-128.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2211.0 1041.0\n1101.0 9477.0\n9474.0 10566.0\n10584.0 2106.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-128.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-128.vrt Aluksne-1989-1185-128.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-128.cut.vrt Aluksne-1989-1185-128.xyz