#!/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 2472.0 3489.0 26.789983333333332 55.94805 -gcp 43542.0 2970.0 27.96998333333333 55.976483333333334 -gcp 43935.0 32283.0 28.0002 55.501216666666664 -gcp 2808.0 32736.0 26.836 55.47593333333333 1880_3vers_ru_126k/VTK_Ryad_XI_List_6_1867.jpg VTK_Ryad_XI_List_6_1867.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2631.75 18116.627290394226\n2472.0 3489.0\n23007.0 3235.50333148251\n43542.0 2970.0\n43753.5 17637.005830094393\n43935.0 32283.0\n23370.75 32517.754580788453\n2808.0 32736.0" | \
  gdaltransform -tps -output_xy VTK_Ryad_XI_List_6_1867.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  VTK_Ryad_XI_List_6_1867.vrt VTK_Ryad_XI_List_6_1867.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES VTK_Ryad_XI_List_6_1867.cut.vrt VTK_Ryad_XI_List_6_1867.xyz