#!/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 26.801643568038944 57.491673276038284 -gcp 10527.0 0.0 26.80177231407166 57.465736315552626 -gcp 10527.0 10623.0 26.75332109355927 57.46514204851648 -gcp 0.0 10623.0 26.752575439453125 57.49184915045203 Aluksne-1989-1186/Aluksne-1989-1186-134.jpg Aluksne-1989-1186-134.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1122.0 1065.0\n9528.0 1092.0\n9474.0 9591.0\n1065.0 9561.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-134.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-134.vrt Aluksne-1989-1186-134.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-134.cut.vrt Aluksne-1989-1186-134.xyz