#!/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 3441.0 1944.0 24.337216666666666 58 -gcp 13914.0 1998.0 28.337216666666666 58 -gcp 14433.0 22128.0 28.337216666666666 54 -gcp 2865.0 22083.0 24.337216666666666 54 Karadarbibas_kartes_Krievijas_teritorija_Vilna__6828_A1_L66_3_02.JPG Karadarbibas_kartes_Krievijas_teritorija_Vilna__6828_A1_L66_3_02.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "3441.0 1944.0\n13914.0 1998.0\n14433.0 22128.0\n2865.0 22083.0" | \
  gdaltransform -tps -output_xy Karadarbibas_kartes_Krievijas_teritorija_Vilna__6828_A1_L66_3_02.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Karadarbibas_kartes_Krievijas_teritorija_Vilna__6828_A1_L66_3_02.vrt Karadarbibas_kartes_Krievijas_teritorija_Vilna__6828_A1_L66_3_02.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Karadarbibas_kartes_Krievijas_teritorija_Vilna__6828_A1_L66_3_02.cut.vrt Karadarbibas_kartes_Krievijas_teritorija_Vilna__6828_A1_L66_3_02.xyz