#!/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 5076.0 6156.0 23.416661666666666 56.98880166666667 -gcp 40734.0 6324.0 23.437491666666666 56.98880166666667 -gcp 40680.0 40122.0 23.437491666666666 56.978386666666665 -gcp 5016.0 39960.0 23.416661666666666 56.978386666666665 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-001946-PLANSETE-029-c-3-III_1946.JPG LVVA-001679-0217-001946-PLANSETE-029-c-3-III_1946.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5076.0 6156.0\n40734.0 6324.0\n40680.0 40122.0\n5016.0 39960.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-001946-PLANSETE-029-c-3-III_1946.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-001946-PLANSETE-029-c-3-III_1946.vrt LVVA-001679-0217-001946-PLANSETE-029-c-3-III_1946.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-001946-PLANSETE-029-c-3-III_1946.cut.vrt LVVA-001679-0217-001946-PLANSETE-029-c-3-III_1946.xyz