#!/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 26.71432466713166 56.657702663111735 -gcp 0.0 16035.0 26.73937439646621 56.65834060067409 -gcp 12030.0 16035.0 26.740239819658957 56.647989486431904 -gcp 12030.0 0.0 26.715196953447055 56.64735165778482 31_Rajons_Varaklani_Z/LNA_KFFDA_F106_1_5923N.jpg LNA_KFFDA_F106_1_5923N.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 16035.0\n12030.0 16035.0\n12030.0 0.0" | \
  gdaltransform -tps -output_xy LNA_KFFDA_F106_1_5923N.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LNA_KFFDA_F106_1_5923N.vrt LNA_KFFDA_F106_1_5923N.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LNA_KFFDA_F106_1_5923N.cut.vrt LNA_KFFDA_F106_1_5923N.xyz