#!/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 26.923199068053435 57.36999232211459 -gcp 10506.0 0.0 26.924696415331795 57.3444975093189 -gcp 10506.0 10560.0 26.876969836448307 57.34363806159996 -gcp 0.0 10560.0 26.875172081760276 57.369106768308065 Aluksne-1989-1186/Aluksne-1989-1186-69.jpg Aluksne-1989-1186-69.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1119.0 1062.0\n9597.0 1083.0\n9567.0 9510.0\n1048.5 9479.25" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-69.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-69.vrt Aluksne-1989-1186-69.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-69.cut.vrt Aluksne-1989-1186-69.xyz