#!/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 26.92826316199047 57.486505682495704 -gcp 10503.0 0.0 26.928074101434923 57.4606586542256 -gcp 10503.0 10575.0 26.87944623819743 57.46041077790434 -gcp 0.0 10575.0 26.879452908539964 57.48626937355637 Aluksne-1989-1186/Aluksne-1989-1186-80.jpg Aluksne-1989-1186-80.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1056.0 1035.0\n9549.0 1002.0\n9570.0 9429.0\n1056.0 9459.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-80.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-80.vrt Aluksne-1989-1186-80.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-80.cut.vrt Aluksne-1989-1186-80.xyz