#!/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 26.80342470590701 57.565276428211874 -gcp 10485.0 0.0 26.8013382906029 57.53918697500883 -gcp 10485.0 10596.0 26.75255195609473 57.54010574616753 -gcp 0.0 10596.0 26.754612589674004 57.56647708306068 Aluksne-1989-1185/Aluksne-1989-1185-125.jpg Aluksne-1989-1185-125.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1089.0 1071.0\n1089.0 9576.0\n9534.0 9567.0\n9528.0 1023.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-125.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-125.vrt Aluksne-1989-1185-125.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-125.cut.vrt Aluksne-1989-1185-125.xyz