#!/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 2610.0 2934.0 25.490083333333335 56.85845 -gcp 43632.0 2628.0 26.69558333333333 56.89803333333333 -gcp 43692.0 31635.0 26.743133333333333 56.423116666666665 -gcp 2766.0 31929.0 25.549733333333332 56.38473333333334 1880_3vers_ru_126k/VTK_Ryad_IX_List_5.jpg VTK_Ryad_IX_List_5.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2703.0 17436.001665741256\n2610.0 2934.0\n23133.0 2753.9850083287065\n43632.0 2628.0\n43656.0 17139.00333148251\n43692.0 31635.0\n23229.0 31791.00499722376\n2766.0 31929.0" | \
  gdaltransform -tps -output_xy VTK_Ryad_IX_List_5.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  VTK_Ryad_IX_List_5.vrt VTK_Ryad_IX_List_5.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES VTK_Ryad_IX_List_5.cut.vrt VTK_Ryad_IX_List_5.xyz