#!/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 26.86476654379142 57.4088453799732 -gcp 10506.0 0.0 26.865489980283293 57.38289215058816 -gcp 10506.0 10584.0 26.81747537276894 57.382352436479486 -gcp 0.0 10584.0 26.816580274900012 57.40850785198942 Aluksne-1989-1186/Aluksne-1989-1186-102.jpg Aluksne-1989-1186-102.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1086.0 1044.0\n9498.0 996.0\n9513.0 9501.0\n1101.0 9519.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-102.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-102.vrt Aluksne-1989-1186-102.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-102.cut.vrt Aluksne-1989-1186-102.xyz