#!/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 5334.0 7362.0 25.24974 57.68660166666667 -gcp 40254.0 7266.0 25.291401666666665 57.68660166666667 -gcp 40320.0 40128.0 25.291401666666665 57.665771666666664 -gcp 5376.0 40212.0 25.24974 57.665771666666664 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-003237-PLANSETE-054-b-15_3237.JPG LVVA-001679-0217-003237-PLANSETE-054-b-15_3237.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5334.0 7362.0\n40254.0 7266.0\n40320.0 40128.0\n5376.0 40212.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-003237-PLANSETE-054-b-15_3237.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-003237-PLANSETE-054-b-15_3237.vrt LVVA-001679-0217-003237-PLANSETE-054-b-15_3237.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-003237-PLANSETE-054-b-15_3237.cut.vrt LVVA-001679-0217-003237-PLANSETE-054-b-15_3237.xyz