#!/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 2847.0 2865.0 21.898233333333334 56.677033333333334 -gcp 44058.0 2400.0 23.093783333333334 56.74915 -gcp 44250.0 31974.0 23.18235 56.2773 -gcp 3132.0 32439.0 22.0042 56.20791666666667 1880_3vers_ru_126k/VTK_Ryad_IX_List_2_1876.jpg VTK_Ryad_IX_List_2_1876.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2985.0 17652.750416435316\n2847.0 2865.0\n23454.0 2579.9700166574125\n44058.0 2400.0\n44175.0 17199.00666296502\n44250.0 31974.0\n23682.0 32217.00499722376\n3132.0 32439.0" | \
  gdaltransform -tps -output_xy VTK_Ryad_IX_List_2_1876.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  VTK_Ryad_IX_List_2_1876.vrt VTK_Ryad_IX_List_2_1876.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES VTK_Ryad_IX_List_2_1876.cut.vrt VTK_Ryad_IX_List_2_1876.xyz