#!/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 186.0 156.0 26.837216666666666 56.25 -gcp 5616.0 135.0 27.337216666666666 56.25 -gcp 5664.0 5076.0 27.337216666666666 56 -gcp 195.0 5103.0 26.837216666666666 56 bruno/U17 1917_Puscha.jpg U17 1917_Puscha.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "186.0 156.0\n5616.0 135.0\n5664.0 5076.0\n195.0 5103.0" | \
  gdaltransform -tps -output_xy U17 1917_Puscha.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  U17 1917_Puscha.vrt U17 1917_Puscha.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES U17 1917_Puscha.cut.vrt U17 1917_Puscha.xyz