#!/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 6876.0 8316.0 27.624411666666667 56.10353166666667 -gcp 43452.0 8502.0 27.666073333333333 56.10353166666667 -gcp 43254.0 41094.0 27.666073333333333 56.082701666666665 -gcp 6642.0 40902.0 27.624411666666667 56.082701666666665 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-004353-PLANSETE-105-d-16_4353.JPG LVVA-001679-0217-004353-PLANSETE-105-d-16_4353.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "6876.0 8316.0\n43452.0 8502.0\n43254.0 41094.0\n6642.0 40902.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-004353-PLANSETE-105-d-16_4353.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-004353-PLANSETE-105-d-16_4353.vrt LVVA-001679-0217-004353-PLANSETE-105-d-16_4353.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-004353-PLANSETE-105-d-16_4353.cut.vrt LVVA-001679-0217-004353-PLANSETE-105-d-16_4353.xyz