#!/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 2592.0 3171.0 24.295066666666667 56.80938333333334 -gcp 43701.0 3510.0 25.490083333333335 56.85845 -gcp 43476.0 32601.0 25.549733333333332 56.38473333333334 -gcp 2289.0 32250.0 24.373166666666666 56.33838333333333 1880_3vers_ru_126k/VTK_Ryad_IX_List_4_1866.jpg VTK_Ryad_IX_List_4_1866.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2436.75 17710.5\n2592.0 3171.0\n23139.0 3309.7329261521377\n43701.0 3510.0\n43605.0 18060.00249861188\n43476.0 32601.0\n22880.25 32462.270405330368\n2289.0 32250.0" | \
  gdaltransform -tps -output_xy VTK_Ryad_IX_List_4_1866.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  VTK_Ryad_IX_List_4_1866.vrt VTK_Ryad_IX_List_4_1866.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES VTK_Ryad_IX_List_4_1866.cut.vrt VTK_Ryad_IX_List_4_1866.xyz