#!/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 26.61243425178528 57.43326004121326 -gcp 10539.0 0.0 26.61297069358826 57.406241277535486 -gcp 10539.0 10617.0 26.563153402328496 57.405819425060486 -gcp 0.0 10617.0 26.562101976394658 57.43276620981722 Aluksne-1989-1186/Aluksne-1989-1186-190.jpg Aluksne-1989-1186-190.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1098.0 1041.0\n9510.0 1041.0\n9480.0 9519.0\n1077.0 9519.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-190.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-190.vrt Aluksne-1989-1186-190.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-190.cut.vrt Aluksne-1989-1186-190.xyz