#!/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 26.804116995499623 57.428401647433994 -gcp 10506.0 0.0 26.804162626266482 57.40200533975831 -gcp 10506.0 10614.0 26.755866045951848 57.40160365578704 -gcp 0.0 10614.0 26.75460540771485 57.427927959737495 Aluksne-1989-1186/Aluksne-1989-1186-128.jpg Aluksne-1989-1186-128.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1134.0 1044.0\n9552.0 1080.0\n9489.0 9579.0\n1065.0 9537.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-128.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-128.vrt Aluksne-1989-1186-128.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-128.cut.vrt Aluksne-1989-1186-128.xyz