#!/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 22.531968297307188 56.84755648385464 -gcp 0.0 15921.0 22.554503371975965 56.84753585515684 -gcp 12033.0 15921.0 22.55447210157002 56.83820229474268 -gcp 12033.0 0.0 22.53194263517783 56.838222946300206 38_Rajons_Sabile_Vane/LNA_KFFDA_F106_1_8688N.jpg LNA_KFFDA_F106_1_8688N.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 15921.0\n12033.0 15921.0\n12033.0 0.0" | \
  gdaltransform -tps -output_xy LNA_KFFDA_F106_1_8688N.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LNA_KFFDA_F106_1_8688N.vrt LNA_KFFDA_F106_1_8688N.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LNA_KFFDA_F106_1_8688N.cut.vrt LNA_KFFDA_F106_1_8688N.xyz