#!/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 3609.0 3294.0 26.607166666666668 57.84356666666667 -gcp 44622.0 2832.0 27.84665 57.871916666666664 -gcp 44925.0 32313.0 27.87815 57.39706666666667 -gcp 3873.0 32757.0 26.647333333333332 57.37153333333333 1880_3vers_ru_126k/VTK_Ryad_VII_List_6_1888.jpg VTK_Ryad_VII_List_6_1888.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "3735.0 18027.000832870628\n3609.0 3294.0\n24121.5 3069.0033314825096\n44622.0 2832.0\n44779.5 17578.50333148251\n44925.0 32313.0\n24394.5 32534.249583564688\n3873.0 32757.0" | \
  gdaltransform -tps -output_xy VTK_Ryad_VII_List_6_1888.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  VTK_Ryad_VII_List_6_1888.vrt VTK_Ryad_VII_List_6_1888.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES VTK_Ryad_VII_List_6_1888.cut.vrt VTK_Ryad_VII_List_6_1888.xyz