#!/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 5022.0 7320.0 24.374861666666668 56.56179 -gcp 41022.0 7386.0 24.416523333333334 56.56179 -gcp 40968.0 40212.0 24.416523333333334 56.54096 -gcp 4944.0 40134.0 24.374861666666668 56.54096 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-002823-PLANSETE-040-i-6_2823.JPG LVVA-001679-0217-002823-PLANSETE-040-i-6_2823.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5022.0 7320.0\n41022.0 7386.0\n40968.0 40212.0\n4944.0 40134.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-002823-PLANSETE-040-i-6_2823.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-002823-PLANSETE-040-i-6_2823.vrt LVVA-001679-0217-002823-PLANSETE-040-i-6_2823.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-002823-PLANSETE-040-i-6_2823.cut.vrt LVVA-001679-0217-002823-PLANSETE-040-i-6_2823.xyz