#!/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 5010.0 6918.0 23.999913333333332 56.936726666666665 -gcp 40674.0 6876.0 24.020743333333332 56.936726666666665 -gcp 40686.0 39738.0 24.020743333333332 56.92631166666666 -gcp 5004.0 39774.0 23.999913333333332 56.92631166666666 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-002634-PLANSETE-039-a-13-I_2634.JPG LVVA-001679-0217-002634-PLANSETE-039-a-13-I_2634.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5010.0 6918.0\n40674.0 6876.0\n40686.0 39738.0\n5004.0 39774.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-002634-PLANSETE-039-a-13-I_2634.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-002634-PLANSETE-039-a-13-I_2634.vrt LVVA-001679-0217-002634-PLANSETE-039-a-13-I_2634.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-002634-PLANSETE-039-a-13-I_2634.cut.vrt LVVA-001679-0217-002634-PLANSETE-039-a-13-I_2634.xyz