#!/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 26.807958372517437 57.38580724240955 -gcp 11220.0 0.0 26.80374105548859 57.357707114247326 -gcp 11220.0 11340.0 26.751960136459697 57.35967936345915 -gcp 0.0 11340.0 26.755343479156497 57.38779002893796 Aluksne-1989-1186/Aluksne-1989-1186-124.jpg Aluksne-1989-1186-124.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1200.0 1695.0\n9582.0 1116.0\n10149.0 9579.0\n1769.25 10167.75" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-124.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-124.vrt Aluksne-1989-1186-124.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-124.cut.vrt Aluksne-1989-1186-124.xyz