#!/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 26.743235564423504 57.5277553330609 -gcp 10485.0 0.0 26.742274136975517 57.50114729716592 -gcp 10485.0 10578.0 26.693411802495156 57.50170666195677 -gcp 0.0 10578.0 26.69275324290619 57.52771818737194 Aluksne-1989-1185/Aluksne-1989-1185-155.jpg Aluksne-1989-1185-155.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1059.0 1077.0\n1011.0 9528.0\n9531.0 9564.0\n9582.0 1119.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-155.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-155.vrt Aluksne-1989-1185-155.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-155.cut.vrt Aluksne-1989-1185-155.xyz