#!/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 3177.0 3096.0 24.215583333333335 57.2808 -gcp 44241.0 3198.0 25.429566666666666 57.33153333333333 -gcp 44148.0 32592.0 25.490083333333335 56.85845 -gcp 3093.0 32511.0 24.295066666666667 56.80938333333334 1880_3vers_ru_126k/VTK_Ryad_VIII_List_4_1888.jpg VTK_Ryad_VIII_List_4_1888.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "3143.25 17808.00249861188\n3177.0 3096.0\n23707.5 3150.0016657412552\n44241.0 3198.0\n44193.0 17902.504164353137\n44148.0 32592.0\n23618.25 32559.754580788453\n3093.0 32511.0" | \
  gdaltransform -tps -output_xy VTK_Ryad_VIII_List_4_1888.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  VTK_Ryad_VIII_List_4_1888.vrt VTK_Ryad_VIII_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_VIII_List_4_1888.cut.vrt VTK_Ryad_VIII_List_4_1888.xyz