#!/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 27.02314808902194 57.43697252033189 -gcp 10959.0 0.0 27.020196199340614 57.41039038577056 -gcp 10959.0 11031.0 26.971615161688185 57.41186485007706 -gcp 0.0 11031.0 26.974100347001023 57.43816115711532 Aluksne-1989-1186/Aluksne-1989-1186-22.jpg Aluksne-1989-1186-22.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1050.0 1485.0\n9465.0 990.0\n9960.0 9489.0\n1546.5 10000.5" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-22.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-22.vrt Aluksne-1989-1186-22.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-22.cut.vrt Aluksne-1989-1186-22.xyz