#!/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 2949.0 2583.0 23.093783333333334 56.74915 -gcp 44691.0 2907.0 24.295066666666667 56.80938333333334 -gcp 44439.0 32520.0 24.373166666666666 56.33838333333333 -gcp 2787.0 32163.0 23.18235 56.2773 1880_3vers_ru_126k/VTK_Ryad_IX_List_3_1876.jpg VTK_Ryad_IX_List_3_1876.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2949.0 2583.0\n23827.5 2752.504164353137\n44691.0 2907.0\n44602.5 17727.00749583565\n44439.0 32520.0\n23613.0 32294.97334813992\n2787.0 32163.0" | \
  gdaltransform -tps -output_xy VTK_Ryad_IX_List_3_1876.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  VTK_Ryad_IX_List_3_1876.vrt VTK_Ryad_IX_List_3_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_3_1876.cut.vrt VTK_Ryad_IX_List_3_1876.xyz