#!/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 26.71733379364014 57.53683119327282 -gcp 11487.0 0.0 26.711196899414066 57.50797980401673 -gcp 11487.0 11649.0 26.65693044662476 57.51126475944518 -gcp 0.0 11649.0 26.66343212127686 57.54006172654842 Aluksne-1989-1185/Aluksne-1989-1185-171.jpg Aluksne-1989-1185-171.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1116.0 2004.0\n2169.0 10500.0\n10539.0 9429.0\n9501.0 957.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-171.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-171.vrt Aluksne-1989-1185-171.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-171.cut.vrt Aluksne-1989-1185-171.xyz