#!/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 26.554496318817144 57.4335199497981 -gcp 10506.0 0.0 26.55282262039185 57.407009845582586 -gcp 10506.0 10542.0 26.503406732559206 57.40752992007448 -gcp 0.0 10542.0 26.50406119155884 57.43427656206038 Aluksne-1989-1186/Aluksne-1989-1186-212.jpg Aluksne-1989-1186-212.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1029.0 1053.0\n9504.0 972.0\n9570.0 9414.0\n1077.0 9483.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-212.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-212.vrt Aluksne-1989-1186-212.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-212.cut.vrt Aluksne-1989-1186-212.xyz