#!/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 1215.0 891.0 27.176666666666666 56 -gcp 11118.0 858.0 27.626666666666665 56 -gcp 11199.0 10632.0 27.626666666666665 55.75 -gcp 1206.0 10698.0 27.176666666666666 55.75 bruno/VIII-23_1923_1-100000_Polsky.jpg VIII-23_1923_1-100000_Polsky.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1215.0 891.0\n11118.0 858.0\n11199.0 10632.0\n1206.0 10698.0" | \
  gdaltransform -tps -output_xy VIII-23_1923_1-100000_Polsky.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  VIII-23_1923_1-100000_Polsky.vrt VIII-23_1923_1-100000_Polsky.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES VIII-23_1923_1-100000_Polsky.cut.vrt VIII-23_1923_1-100000_Polsky.xyz