#!/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 26.987383396148687 57.51071761091998 -gcp 10485.0 0.0 26.988241703033452 57.48482896818528 -gcp 10485.0 10578.0 26.939458816528322 57.483641077979414 -gcp 0.0 10578.0 26.938278644561766 57.5104668961351 Aluksne-1989-1185/Aluksne-1989-1185-35.jpg Aluksne-1989-1185-35.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1071.0 1059.0\n9465.0 1080.0\n9417.0 9552.0\n1014.0 9537.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-35.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-35.vrt Aluksne-1989-1185-35.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-35.cut.vrt Aluksne-1989-1185-35.xyz