#!/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 5010.0 7338.0 24.874791666666667 56.74925833333333 -gcp 40866.0 7260.0 24.916453333333333 56.74925833333333 -gcp 40890.0 40104.0 24.916453333333333 56.72842833333333 -gcp 5016.0 40146.0 24.874791666666667 56.72842833333333 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-003037-PLANSETE-049-c-2_3037.JPG LVVA-001679-0217-003037-PLANSETE-049-c-2_3037.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5010.0 7338.0\n40866.0 7260.0\n40890.0 40104.0\n5016.0 40146.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-003037-PLANSETE-049-c-2_3037.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-003037-PLANSETE-049-c-2_3037.vrt LVVA-001679-0217-003037-PLANSETE-049-c-2_3037.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-003037-PLANSETE-049-c-2_3037.cut.vrt LVVA-001679-0217-003037-PLANSETE-049-c-2_3037.xyz