#!/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 26.865802668146245 57.65381346446825 -gcp 10530.0 0.0 26.8659165606596 57.627760800082704 -gcp 10530.0 10662.0 26.817399874624204 57.62752721545092 -gcp 0.0 10662.0 26.81666325167938 57.65376065656111 Aluksne-1989-1185/Aluksne-1989-1185-83.jpg Aluksne-1989-1185-83.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1059.0 1113.0\n1047.0 9636.0\n9480.0 9621.0\n9477.0 1104.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-83.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-83.vrt Aluksne-1989-1185-83.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-83.cut.vrt Aluksne-1989-1185-83.xyz