#!/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 26.617032485961918 57.487077175511864 -gcp 10506.0 0.0 26.61397476768494 57.460182715262064 -gcp 10506.0 10554.0 26.563973230361942 57.46156181788145 -gcp 0.0 10554.0 26.565958065032962 57.48846125661006 Aluksne-1989-1186/Aluksne-1989-1186-195.jpg Aluksne-1989-1186-195.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1071.0 1053.0\n9549.0 1029.0\n9567.0 9462.0\n1077.0 9486.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-195.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-195.vrt Aluksne-1989-1186-195.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-195.cut.vrt Aluksne-1989-1186-195.xyz