#!/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 6612.0 8034.0 26.957836666666665 56.124361666666665 -gcp 43056.0 7884.0 26.978668333333335 56.124361666666665 -gcp 43164.0 40650.0 26.978668333333335 56.11394666666666 -gcp 6714.0 40788.0 26.957836666666665 56.11394666666666 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-004245-PLANSETE-87-f-12-I_4245.JPG LVVA-001679-0217-004245-PLANSETE-87-f-12-I_4245.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "6612.0 8034.0\n43056.0 7884.0\n43164.0 40650.0\n6714.0 40788.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-004245-PLANSETE-87-f-12-I_4245.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-004245-PLANSETE-87-f-12-I_4245.vrt LVVA-001679-0217-004245-PLANSETE-87-f-12-I_4245.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-004245-PLANSETE-87-f-12-I_4245.cut.vrt LVVA-001679-0217-004245-PLANSETE-87-f-12-I_4245.xyz