#!/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 5214.0 5982.0 22.666765 57.436643333333336 -gcp 40428.0 5976.0 22.708425 57.436643333333336 -gcp 40572.0 39738.0 22.708425 57.41581333333333 -gcp 5310.0 39768.0 22.666765 57.41581333333333 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-001229-PLANSETE-022-b-13_1229.JPG LVVA-001679-0217-001229-PLANSETE-022-b-13_1229.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5214.0 5982.0\n40428.0 5976.0\n40572.0 39738.0\n5310.0 39768.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-001229-PLANSETE-022-b-13_1229.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-001229-PLANSETE-022-b-13_1229.vrt LVVA-001679-0217-001229-PLANSETE-022-b-13_1229.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-001229-PLANSETE-022-b-13_1229.cut.vrt LVVA-001679-0217-001229-PLANSETE-022-b-13_1229.xyz