#!/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 1890.0 3621.0 25.368466666666666 57.80485 -gcp 43119.0 3462.0 26.607166666666668 57.84356666666667 -gcp 43275.0 33144.0 26.647333333333332 57.37153333333333 -gcp 2076.0 33264.0 25.429566666666666 57.33153333333333 1880_3vers_ru_126k/VTK_Ryad_VII_List_5_1897.jpg VTK_Ryad_VII_List_5_1897.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1981.5 18450.004164353137\n1890.0 3621.0\n22486.5 3459.7046085508055\n43119.0 3462.0\n43205.25 18306.001665741256\n43275.0 33144.0\n22672.5 33254.27790116602\n2076.0 33264.0" | \
  gdaltransform -tps -output_xy VTK_Ryad_VII_List_5_1897.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  VTK_Ryad_VII_List_5_1897.vrt VTK_Ryad_VII_List_5_1897.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES VTK_Ryad_VII_List_5_1897.cut.vrt VTK_Ryad_VII_List_5_1897.xyz