#!/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 26.802931028366093 57.43861860809764 -gcp 10506.0 0.0 26.802866655349735 57.41252846838125 -gcp 10506.0 10608.0 26.754334968566898 57.41201422868348 -gcp 0.0 10608.0 26.753594678878788 57.43859550903676 Aluksne-1989-1186/Aluksne-1989-1186-129.jpg Aluksne-1989-1186-129.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1137.0 1017.0\n9552.0 1065.0\n9480.0 9570.0\n1056.0 9510.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-129.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-129.vrt Aluksne-1989-1186-129.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-129.cut.vrt Aluksne-1989-1186-129.xyz