#!/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 5034.0 7176.0 23.999913333333332 56.90548166666667 -gcp 40722.0 7062.0 24.020743333333332 56.90548166666667 -gcp 40830.0 39708.0 24.020743333333332 56.895066666666665 -gcp 5064.0 39810.0 23.999913333333332 56.895066666666665 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-002641-PLANSETE-039-d-1-III_2641.JPG LVVA-001679-0217-002641-PLANSETE-039-d-1-III_2641.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5034.0 7176.0\n40722.0 7062.0\n40830.0 39708.0\n5064.0 39810.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-002641-PLANSETE-039-d-1-III_2641.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-002641-PLANSETE-039-d-1-III_2641.vrt LVVA-001679-0217-002641-PLANSETE-039-d-1-III_2641.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-002641-PLANSETE-039-d-1-III_2641.cut.vrt LVVA-001679-0217-002641-PLANSETE-039-d-1-III_2641.xyz