#!/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 26.80418099204381 57.57602636111712 -gcp 10485.0 0.0 26.80252611637116 57.54980920306057 -gcp 10485.0 13338.0 26.74105798976547 57.55102483792856 -gcp 0.0 13338.0 26.74291133880615 57.57721223784516 Aluksne-1989-1185/Aluksne-1989-1185-126.jpg Aluksne-1989-1185-126.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1062.0 1035.0\n1032.0 9573.0\n9480.0 9579.0\n9504.0 1035.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-126.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-126.vrt Aluksne-1989-1185-126.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-126.cut.vrt Aluksne-1989-1185-126.xyz