#!/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 4668.0 5796.0 21.50026 56.95755666666667 -gcp 40338.0 5976.0 21.54192 56.95755666666667 -gcp 40284.0 39726.0 21.54192 56.936726666666665 -gcp 4590.0 39540.0 21.50026 56.936726666666665 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-000676-PLANSETE-011-a-9_0676.JPG LVVA-001679-0217-000676-PLANSETE-011-a-9_0676.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4668.0 5796.0\n40338.0 5976.0\n40284.0 39726.0\n4590.0 39540.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-000676-PLANSETE-011-a-9_0676.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-000676-PLANSETE-011-a-9_0676.vrt LVVA-001679-0217-000676-PLANSETE-011-a-9_0676.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-000676-PLANSETE-011-a-9_0676.cut.vrt LVVA-001679-0217-000676-PLANSETE-011-a-9_0676.xyz