#!/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 26.989024684152135 57.37573945569778 -gcp 10524.0 0.0 26.988045864147857 57.35025733950301 -gcp 10524.0 10632.0 26.940472340568604 57.350688995325015 -gcp 0.0 10632.0 26.941960780285704 57.37626949248717 Aluksne-1989-1186/Aluksne-1989-1186-15.jpg Aluksne-1989-1186-15.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "984.0 1080.0\n9405.0 975.0\n9492.0 9498.0\n1062.0 9601.5" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-15.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-15.vrt Aluksne-1989-1186-15.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-15.cut.vrt Aluksne-1989-1186-15.xyz