#!/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 26.614368588447576 57.4653678754161 -gcp 10506.0 0.0 26.612936288833623 57.43856787586974 -gcp 10506.0 10542.0 26.563295095443728 57.43905286065402 -gcp 0.0 10542.0 26.563799350738527 57.46567083586852 Aluksne-1989-1186/Aluksne-1989-1186-193.jpg Aluksne-1989-1186-193.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1059.0 1005.0\n9555.0 1059.0\n9471.0 9483.0\n993.0 9432.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-193.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-193.vrt Aluksne-1989-1186-193.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-193.cut.vrt Aluksne-1989-1186-193.xyz