#!/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 2130.0 1731.0 26.337216666666666 57 -gcp 12900.0 1770.0 26.837216666666666 57 -gcp 12900.0 11604.0 26.837216666666666 56.75 -gcp 2040.0 11550.0 26.337216666666666 56.75 bruno/T14_AltLuban_1919.jpg T14_AltLuban_1919.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2130.0 1731.0\n12900.0 1770.0\n12900.0 11604.0\n2040.0 11550.0" | \
  gdaltransform -tps -output_xy T14_AltLuban_1919.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  T14_AltLuban_1919.vrt T14_AltLuban_1919.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES T14_AltLuban_1919.cut.vrt T14_AltLuban_1919.xyz