#!/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 4932.0 6768.0 27.791055 56.166021666666666 -gcp 41514.0 6708.0 27.832716666666666 56.166021666666666 -gcp 41526.0 39588.0 27.832716666666666 56.14519166666667 -gcp 4926.0 39642.0 27.791055 56.14519166666667 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-004050-PLANSETE-105-e-4_4050.JPG LVVA-001679-0217-004050-PLANSETE-105-e-4_4050.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4932.0 6768.0\n41514.0 6708.0\n41526.0 39588.0\n4926.0 39642.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-004050-PLANSETE-105-e-4_4050.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-004050-PLANSETE-105-e-4_4050.vrt LVVA-001679-0217-004050-PLANSETE-105-e-4_4050.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-004050-PLANSETE-105-e-4_4050.cut.vrt LVVA-001679-0217-004050-PLANSETE-105-e-4_4050.xyz