#!/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 5268.0 7356.0 25.541366666666665 57.41581333333333 -gcp 40452.0 7290.0 25.583028333333335 57.41581333333333 -gcp 40584.0 40140.0 25.583028333333335 57.394983333333336 -gcp 5358.0 40206.0 25.541366666666665 57.394983333333336 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-003331-PLANSETE-064-d-2_3331.JPG LVVA-001679-0217-003331-PLANSETE-064-d-2_3331.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5268.0 7356.0\n40452.0 7290.0\n40584.0 40140.0\n5358.0 40206.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-003331-PLANSETE-064-d-2_3331.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-003331-PLANSETE-064-d-2_3331.vrt LVVA-001679-0217-003331-PLANSETE-064-d-2_3331.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-003331-PLANSETE-064-d-2_3331.cut.vrt LVVA-001679-0217-003331-PLANSETE-064-d-2_3331.xyz