#!/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 26.519906551361085 57.50928822538484 -gcp 10605.0 0.0 26.521987945556646 57.48183898629898 -gcp 10605.0 10659.0 26.470846512882307 57.481144615787095 -gcp 0.0 10659.0 26.469659178733828 57.50822191342458 Aluksne-1989-1186/Aluksne-1989-1186-225.jpg Aluksne-1989-1186-225.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "999.0 1062.0\n9414.0 933.0\n9531.0 9420.0\n1110.0 9570.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-225.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-225.vrt Aluksne-1989-1186-225.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-225.cut.vrt Aluksne-1989-1186-225.xyz