#!/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 26.621287578582766 57.53065053954854 -gcp 10506.0 0.0 26.618541604467513 57.50404166811141 -gcp 10506.0 10560.0 26.56802762126923 57.50557342311781 -gcp 0.0 10560.0 26.570843940734868 57.532574406262405 Aluksne-1989-1186/Aluksne-1989-1186-199.jpg Aluksne-1989-1186-199.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "993.0 1086.0\n9459.0 1038.0\n9498.0 9465.0\n1029.0 9516.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-199.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-199.vrt Aluksne-1989-1186-199.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-199.cut.vrt Aluksne-1989-1186-199.xyz