#!/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 4572.0 6312.0 21.666903333333334 56.87423666666667 -gcp 40326.0 6396.0 21.708565 56.87423666666667 -gcp 40392.0 40170.0 21.708565 56.853406666666665 -gcp 4596.0 40068.0 21.666903333333334 56.853406666666665 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-000710-PLANSETE-011-e-9_0710.JPG LVVA-001679-0217-000710-PLANSETE-011-e-9_0710.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4572.0 6312.0\n40326.0 6396.0\n40392.0 40170.0\n4596.0 40068.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-000710-PLANSETE-011-e-9_0710.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-000710-PLANSETE-011-e-9_0710.vrt LVVA-001679-0217-000710-PLANSETE-011-e-9_0710.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-000710-PLANSETE-011-e-9_0710.cut.vrt LVVA-001679-0217-000710-PLANSETE-011-e-9_0710.xyz