#!/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 5454.0 7242.0 25.20808 57.72826166666667 -gcp 40368.0 7290.0 25.24974 57.72826166666667 -gcp 40278.0 40128.0 25.24974 57.707431666666665 -gcp 5370.0 40074.0 25.20808 57.707431666666665 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-003233-PLANSETE-054-b-6_3233.JPG LVVA-001679-0217-003233-PLANSETE-054-b-6_3233.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5454.0 7242.0\n40368.0 7290.0\n40278.0 40128.0\n5370.0 40074.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-003233-PLANSETE-054-b-6_3233.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-003233-PLANSETE-054-b-6_3233.vrt LVVA-001679-0217-003233-PLANSETE-054-b-6_3233.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-003233-PLANSETE-054-b-6_3233.cut.vrt LVVA-001679-0217-003233-PLANSETE-054-b-6_3233.xyz