#!/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 4776.0 5898.0 23.416661666666666 56.39515 -gcp 41004.0 5928.0 23.458321666666667 56.39515 -gcp 41034.0 39702.0 23.458321666666667 56.37432 -gcp 4812.0 39630.0 23.416661666666666 56.37432 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-002278-PLANSETE-031-f-7_2278.JPG LVVA-001679-0217-002278-PLANSETE-031-f-7_2278.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4776.0 5898.0\n41004.0 5928.0\n41034.0 39702.0\n4812.0 39630.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-002278-PLANSETE-031-f-7_2278.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-002278-PLANSETE-031-f-7_2278.vrt LVVA-001679-0217-002278-PLANSETE-031-f-7_2278.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-002278-PLANSETE-031-f-7_2278.cut.vrt LVVA-001679-0217-002278-PLANSETE-031-f-7_2278.xyz