#!/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 23.44785308916561 56.54134749940613 -gcp 0.0 16260.0 23.479111345400717 56.538977005842355 -gcp 12186.0 16260.0 23.475891401437057 56.52603389016854 -gcp 12186.0 0.0 23.44464361346618 56.52840360017063 05_Rajons_Kronauce/LNA_KFFDA_F106_1_4036N.jpg LNA_KFFDA_F106_1_4036N.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 16260.0\n12186.0 16260.0\n12186.0 0.0" | \
  gdaltransform -tps -output_xy LNA_KFFDA_F106_1_4036N.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LNA_KFFDA_F106_1_4036N.vrt LNA_KFFDA_F106_1_4036N.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LNA_KFFDA_F106_1_4036N.cut.vrt LNA_KFFDA_F106_1_4036N.xyz