#!/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 26.989213228225708 57.467314090040595 -gcp 10506.0 0.0 26.990929841995243 57.441006065700996 -gcp 10506.0 10614.0 26.942049264907837 57.44028431943796 -gcp 0.0 10614.0 26.94066524505616 57.466869816665664 Aluksne-1989-1186/Aluksne-1989-1186-46.jpg Aluksne-1989-1186-46.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1065.0 1035.0\n9468.0 1029.0\n9453.75 9526.5\n1041.0 9534.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-46.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-46.vrt Aluksne-1989-1186-46.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-46.cut.vrt Aluksne-1989-1186-46.xyz