#!/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 7464.0 24.74981 56.60344833333333 -gcp 41004.0 7512.0 24.79147 56.60344833333333 -gcp 40932.0 40392.0 24.79147 56.582618333333336 -gcp 4914.0 40320.0 24.74981 56.582618333333336 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-003084-PLANSETE-049-e-15_3084.JPG LVVA-001679-0217-003084-PLANSETE-049-e-15_3084.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5010.0 7464.0\n41004.0 7512.0\n40932.0 40392.0\n4914.0 40320.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-003084-PLANSETE-049-e-15_3084.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-003084-PLANSETE-049-e-15_3084.vrt LVVA-001679-0217-003084-PLANSETE-049-e-15_3084.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-003084-PLANSETE-049-e-15_3084.cut.vrt LVVA-001679-0217-003084-PLANSETE-049-e-15_3084.xyz