#!/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 5148.0 6732.0 27.957698333333333 56.54096 -gcp 41388.0 6774.0 27.99936 56.54096 -gcp 41310.0 39666.0 27.99936 56.52013 -gcp 5052.0 39612.0 27.957698333333333 56.52013 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-003905-PLANSETE-103-i-12_3905.JPG LVVA-001679-0217-003905-PLANSETE-103-i-12_3905.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5148.0 6732.0\n41388.0 6774.0\n41310.0 39666.0\n5052.0 39612.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-003905-PLANSETE-103-i-12_3905.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-003905-PLANSETE-103-i-12_3905.vrt LVVA-001679-0217-003905-PLANSETE-103-i-12_3905.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-003905-PLANSETE-103-i-12_3905.cut.vrt LVVA-001679-0217-003905-PLANSETE-103-i-12_3905.xyz