#!/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 26.741208034515385 57.42115733378818 -gcp 10506.0 0.0 26.740478473663334 57.394785915873456 -gcp 10506.0 10566.0 26.69164637947083 57.394618274241765 -gcp 0.0 10566.0 26.690777343750003 57.42104178323032 Aluksne-1989-1186/Aluksne-1989-1186-152.jpg Aluksne-1989-1186-152.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1083.0 1047.0\n9597.0 1065.0\n9552.0 9492.0\n1050.0 9480.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-152.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-152.vrt Aluksne-1989-1186-152.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-152.cut.vrt Aluksne-1989-1186-152.xyz