#!/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 5040.0 7038.0 24.124896666666668 56.64510833333333 -gcp 41028.0 7062.0 24.166556666666665 56.64510833333333 -gcp 40974.0 39708.0 24.166556666666665 56.624278333333336 -gcp 4980.0 39684.0 24.124896666666668 56.624278333333336 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-002745-PLANSETE-040-d-8_2745.JPG LVVA-001679-0217-002745-PLANSETE-040-d-8_2745.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5040.0 7038.0\n41028.0 7062.0\n40974.0 39708.0\n4980.0 39684.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-002745-PLANSETE-040-d-8_2745.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-002745-PLANSETE-040-d-8_2745.vrt LVVA-001679-0217-002745-PLANSETE-040-d-8_2745.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-002745-PLANSETE-040-d-8_2745.cut.vrt LVVA-001679-0217-002745-PLANSETE-040-d-8_2745.xyz