#!/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 4704.0 6660.0 28.166003333333332 56.291001666666666 -gcp 41172.0 6552.0 28.207665 56.291001666666666 -gcp 41232.0 39402.0 28.207665 56.27017166666667 -gcp 4734.0 39498.0 28.166003333333332 56.27017166666667 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-004160-PLANSETE-110-h-9_4160.JPG LVVA-001679-0217-004160-PLANSETE-110-h-9_4160.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4704.0 6660.0\n41172.0 6552.0\n41232.0 39402.0\n4734.0 39498.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-004160-PLANSETE-110-h-9_4160.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-004160-PLANSETE-110-h-9_4160.vrt LVVA-001679-0217-004160-PLANSETE-110-h-9_4160.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-004160-PLANSETE-110-h-9_4160.cut.vrt LVVA-001679-0217-004160-PLANSETE-110-h-9_4160.xyz