#!/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 0.0 0.0 27.656000703116376 56.80678607830798 -gcp 0.0 16134.0 27.685267139969202 56.800726410582804 -gcp 12360.0 16134.0 27.676803769305604 56.78842618247626 -gcp 12360.0 0.0 27.647545393168013 56.79448377028804 29_Rajons_Karsava/LNA_KFFDA_F106_1_5605N.jpg LNA_KFFDA_F106_1_5605N.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "0.0 0.0\n0.0 16134.0\n12360.0 16134.0\n12360.0 0.0" | \
  gdaltransform -tps -output_xy LNA_KFFDA_F106_1_5605N.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LNA_KFFDA_F106_1_5605N.vrt LNA_KFFDA_F106_1_5605N.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LNA_KFFDA_F106_1_5605N.cut.vrt LNA_KFFDA_F106_1_5605N.xyz