#!/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 4818.0 6858.0 27.832716666666666 56.31183166666667 -gcp 41256.0 6696.0 27.874376666666667 56.31183166666667 -gcp 41352.0 39576.0 27.874376666666667 56.291001666666666 -gcp 4890.0 39720.0 27.832716666666666 56.291001666666666 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-003990-PLANSETE-104-i-5_3990.JPG LVVA-001679-0217-003990-PLANSETE-104-i-5_3990.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4818.0 6858.0\n41256.0 6696.0\n41352.0 39576.0\n4890.0 39720.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-003990-PLANSETE-104-i-5_3990.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-003990-PLANSETE-104-i-5_3990.vrt LVVA-001679-0217-003990-PLANSETE-104-i-5_3990.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-003990-PLANSETE-104-i-5_3990.cut.vrt LVVA-001679-0217-003990-PLANSETE-104-i-5_3990.xyz