#!/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 4818.0 7554.0 25.0581 56.611781666666666 -gcp 40812.0 7542.0 25.066433333333332 56.611781666666666 -gcp 40806.0 40386.0 25.066433333333332 56.607615 -gcp 4782.0 40398.0 25.0581 56.607615 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-003288-PLANSETE-058-d-10-XVIII_3288.JPG LVVA-001679-0217-003288-PLANSETE-058-d-10-XVIII_3288.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4818.0 7554.0\n40812.0 7542.0\n40806.0 40386.0\n4782.0 40398.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-003288-PLANSETE-058-d-10-XVIII_3288.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-003288-PLANSETE-058-d-10-XVIII_3288.vrt LVVA-001679-0217-003288-PLANSETE-058-d-10-XVIII_3288.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-003288-PLANSETE-058-d-10-XVIII_3288.cut.vrt LVVA-001679-0217-003288-PLANSETE-058-d-10-XVIII_3288.xyz