#!/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 26.718587969336145 57.43949880945164 -gcp 11946.0 0.0 26.70902713895592 57.40990812269446 -gcp 11946.0 12072.0 26.653402386402323 57.41546435738748 -gcp 0.0 12072.0 26.6643955163965 57.4451791202972 Aluksne-1989-1186/Aluksne-1989-1186-167.jpg Aluksne-1989-1186-167.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1077.0 2469.0\n9402.0 1092.0\n10755.0 9534.0\n2433.0 10884.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-167.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-167.vrt Aluksne-1989-1186-167.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-167.cut.vrt Aluksne-1989-1186-167.xyz