#!/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 2865.0 2862.0 24.1349 57.754 -gcp 43875.0 2877.0 25.368466666666666 57.80485 -gcp 43758.0 31824.0 25.429566666666666 57.33153333333333 -gcp 2751.0 31788.0 24.215583333333335 57.2808 1880_3vers_ru_126k/VTK_Ryad_VII_List_4_1888.jpg VTK_Ryad_VII_List_4_1888.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2793.0 17331.753747917825\n2865.0 2862.0\n23371.5 2851.490005552471\n43875.0 2877.0\n43812.0 17358.004164353137\n43758.0 31824.0\n23250.0 31828.51249305941\n2751.0 31788.0" | \
  gdaltransform -tps -output_xy VTK_Ryad_VII_List_4_1888.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  VTK_Ryad_VII_List_4_1888.vrt VTK_Ryad_VII_List_4_1888.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES VTK_Ryad_VII_List_4_1888.cut.vrt VTK_Ryad_VII_List_4_1888.xyz