#!/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 5100.0 5070.0 27.791055 56.853406666666665 -gcp 41070.0 4992.0 27.832716666666666 56.853406666666665 -gcp 41100.0 37872.0 27.832716666666666 56.83257666666667 -gcp 5124.0 37944.0 27.791055 56.83257666666667 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-003716-PLANSETE-102-e-16_3716.JPG LVVA-001679-0217-003716-PLANSETE-102-e-16_3716.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5100.0 5070.0\n41070.0 4992.0\n41100.0 37872.0\n5124.0 37944.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-003716-PLANSETE-102-e-16_3716.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-003716-PLANSETE-102-e-16_3716.vrt LVVA-001679-0217-003716-PLANSETE-102-e-16_3716.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-003716-PLANSETE-102-e-16_3716.cut.vrt LVVA-001679-0217-003716-PLANSETE-102-e-16_3716.xyz