#!/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 5466.0 7284.0 25.62468833333333 57.394983333333336 -gcp 40680.0 7452.0 25.66635 57.394983333333336 -gcp 40494.0 40320.0 25.66635 57.37415333333333 -gcp 5268.0 40140.0 25.62468833333333 57.37415333333333 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-003336-PLANSETE-064-d-8_3336.JPG LVVA-001679-0217-003336-PLANSETE-064-d-8_3336.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5466.0 7284.0\n40680.0 7452.0\n40494.0 40320.0\n5268.0 40140.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-003336-PLANSETE-064-d-8_3336.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-003336-PLANSETE-064-d-8_3336.vrt LVVA-001679-0217-003336-PLANSETE-064-d-8_3336.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-003336-PLANSETE-064-d-8_3336.cut.vrt LVVA-001679-0217-003336-PLANSETE-064-d-8_3336.xyz