#!/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 5706.0 6426.0 21.54192 56.66593833333334 -gcp 41640.0 6702.0 21.583581666666667 56.66593833333334 -gcp 41514.0 40494.0 21.583581666666667 56.64510833333333 -gcp 5568.0 40188.0 21.54192 56.64510833333333 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-000804-PLANSETE-012-d-2_0804.JPG LVVA-001679-0217-000804-PLANSETE-012-d-2_0804.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5706.0 6426.0\n41640.0 6702.0\n41514.0 40494.0\n5568.0 40188.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-000804-PLANSETE-012-d-2_0804.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-000804-PLANSETE-012-d-2_0804.vrt LVVA-001679-0217-000804-PLANSETE-012-d-2_0804.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-000804-PLANSETE-012-d-2_0804.cut.vrt LVVA-001679-0217-000804-PLANSETE-012-d-2_0804.xyz