#!/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 26.590501808545678 57.43409227568969 -gcp 11664.0 0.0 26.582911694721243 57.404600756157095 -gcp 11664.0 11586.0 26.52840298970458 57.40859303165689 -gcp 0.0 11586.0 26.535349373365445 57.43806720491223 Aluksne-1989-1186/Aluksne-1989-1186-209.jpg Aluksne-1989-1186-209.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1104.0 2058.0\n9513.0 972.0\n10566.0 9321.0\n2175.0 10395.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-209.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-209.vrt Aluksne-1989-1186-209.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-209.cut.vrt Aluksne-1989-1186-209.xyz