#!/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 1365.0 741.0 27.626666666666665 56.75 -gcp 11094.0 735.0 28.076666666666668 56.75 -gcp 11172.0 10503.0 28.076666666666668 56.5 -gcp 1392.0 10581.0 27.626666666666665 56.5 bruno/V-24_1923 1-100000 Polsky.jpg V-24_1923 1-100000 Polsky.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1365.0 741.0\n11094.0 735.0\n11172.0 10503.0\n1392.0 10581.0" | \
  gdaltransform -tps -output_xy V-24_1923 1-100000 Polsky.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  V-24_1923 1-100000 Polsky.vrt V-24_1923 1-100000 Polsky.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES V-24_1923 1-100000 Polsky.cut.vrt V-24_1923 1-100000 Polsky.xyz