#!/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 26.83374646377564 57.362108628152875 -gcp 10623.0 0.0 26.832351715087896 57.33583455201962 -gcp 10623.0 10779.0 26.78223845291138 57.33692882142489 -gcp 0.0 10779.0 26.785435646057127 57.363485906009515 Aluksne-1989-1186/Aluksne-1989-1186-119.jpg Aluksne-1989-1186-119.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1101.0 1164.0\n9508.5 1055.25\n9597.0 9570.0\n1191.0 9651.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-119.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-119.vrt Aluksne-1989-1186-119.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-119.cut.vrt Aluksne-1989-1186-119.xyz