#!/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 26.78683686466327 57.59967405886749 -gcp 11664.0 0.0 26.839713487327778 57.59643032323667 -gcp 11664.0 11559.0 26.83406352996826 57.5682088045269 -gcp 0.0 11559.0 26.781173546483796 57.57112911843287 Aluksne-1989-1185/Aluksne-1989-1185-111.jpg Aluksne-1989-1185-111.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1071.0 1938.0\n2148.0 10317.0\n10599.0 9219.0\n9516.0 837.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-111.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-111.vrt Aluksne-1989-1185-111.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-111.cut.vrt Aluksne-1989-1185-111.xyz