#!/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 26.954940040589058 56.63875461158913 -gcp 0.0 16164.0 26.98138344363203 56.63836300610509 -gcp 12180.0 16164.0 26.98084427921578 56.62738252025317 -gcp 12180.0 0.0 26.954408547768512 56.627773933121155 19_Rajons_Vilani_ZA/LNA_KFFDA_F106_1_4978N.jpg LNA_KFFDA_F106_1_4978N.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 16164.0\n12180.0 16164.0\n12180.0 0.0" | \
  gdaltransform -tps -output_xy LNA_KFFDA_F106_1_4978N.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LNA_KFFDA_F106_1_4978N.vrt LNA_KFFDA_F106_1_4978N.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LNA_KFFDA_F106_1_4978N.cut.vrt LNA_KFFDA_F106_1_4978N.xyz