#!/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 5064.0 5934.0 23.166695 57.082535 -gcp 40644.0 5916.0 23.208356666666667 57.082535 -gcp 40746.0 39708.0 23.208356666666667 57.061706666666666 -gcp 5136.0 39684.0 23.166695 57.061706666666666 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-001883-PLANSETE-028-h-1_1883.JPG LVVA-001679-0217-001883-PLANSETE-028-h-1_1883.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5064.0 5934.0\n40644.0 5916.0\n40746.0 39708.0\n5136.0 39684.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-001883-PLANSETE-028-h-1_1883.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-001883-PLANSETE-028-h-1_1883.vrt LVVA-001679-0217-001883-PLANSETE-028-h-1_1883.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-001883-PLANSETE-028-h-1_1883.cut.vrt LVVA-001679-0217-001883-PLANSETE-028-h-1_1883.xyz