#!/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 2433.0 3339.0 20.710266666666666 56.59578333333333 -gcp 43593.0 3240.0 21.898233333333334 56.677033333333334 -gcp 43635.0 32376.0 22.0042 56.20791666666667 -gcp 2427.0 32565.0 20.8318 56.12565 1880_3vers_ru_126k/VTK_Ryad_IX_List_1_1873.jpg VTK_Ryad_IX_List_1_1873.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2494.5 17970.75\n2433.0 3339.0\n23011.5 3190.5\n43593.0 3240.0\n43488.0 17907.0\n43635.0 32376.0\n23050.5 32566.5\n2427.0 32565.0" | \
  gdaltransform -tps -output_xy VTK_Ryad_IX_List_1_1873.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  VTK_Ryad_IX_List_1_1873.vrt VTK_Ryad_IX_List_1_1873.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES VTK_Ryad_IX_List_1_1873.cut.vrt VTK_Ryad_IX_List_1_1873.xyz