#!/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 5052.0 6276.0 23.916591666666665 56.770088333333334 -gcp 40884.0 6324.0 23.95825333333333 56.770088333333334 -gcp 40932.0 40074.0 23.95825333333333 56.74925833333333 -gcp 5076.0 40008.0 23.916591666666665 56.74925833333333 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-002362-PLANSETE-032-i-15_2362.JPG LVVA-001679-0217-002362-PLANSETE-032-i-15_2362.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5052.0 6276.0\n40884.0 6324.0\n40932.0 40074.0\n5076.0 40008.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-002362-PLANSETE-032-i-15_2362.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-002362-PLANSETE-032-i-15_2362.vrt LVVA-001679-0217-002362-PLANSETE-032-i-15_2362.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-002362-PLANSETE-032-i-15_2362.cut.vrt LVVA-001679-0217-002362-PLANSETE-032-i-15_2362.xyz