#!/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 26.864200341301867 57.53665780583754 -gcp 10485.0 0.0 26.86351325419665 57.51073528730431 -gcp 10485.0 13260.0 26.802761618550743 57.51073137845498 -gcp 0.0 13260.0 26.80296071107093 57.537074416316216 Aluksne-1989-1185/Aluksne-1989-1185-72.jpg Aluksne-1989-1185-72.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1041.0 1068.0\n1065.0 9582.0\n9507.0 9555.0\n9474.0 1026.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-72.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-72.vrt Aluksne-1989-1185-72.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-72.cut.vrt Aluksne-1989-1185-72.xyz