#!/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 4956.0 4914.0 27.124481666666668 56.18685166666667 -gcp 41370.0 4758.0 27.166141666666668 56.18685166666667 -gcp 41502.0 37356.0 27.166141666666668 56.166021666666666 -gcp 5076.0 37518.0 27.124481666666668 56.166021666666666 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-004260-PLANSETE-96-a-16_4260.JPG LVVA-001679-0217-004260-PLANSETE-96-a-16_4260.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4956.0 4914.0\n41370.0 4758.0\n41502.0 37356.0\n5076.0 37518.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-004260-PLANSETE-96-a-16_4260.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-004260-PLANSETE-96-a-16_4260.vrt LVVA-001679-0217-004260-PLANSETE-96-a-16_4260.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-004260-PLANSETE-96-a-16_4260.cut.vrt LVVA-001679-0217-004260-PLANSETE-96-a-16_4260.xyz