#!/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 4986.0 7182.0 26.957836666666665 56.83257666666667 -gcp 40758.0 7146.0 26.999498333333335 56.83257666666667 -gcp 40776.0 40002.0 26.999498333333335 56.811748333333334 -gcp 4968.0 40056.0 26.957836666666665 56.811748333333334 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-003475-PLANSETE-084-i-4_3475.JPG LVVA-001679-0217-003475-PLANSETE-084-i-4_3475.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4986.0 7182.0\n40758.0 7146.0\n40776.0 40002.0\n4968.0 40056.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-003475-PLANSETE-084-i-4_3475.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-003475-PLANSETE-084-i-4_3475.vrt LVVA-001679-0217-003475-PLANSETE-084-i-4_3475.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-003475-PLANSETE-084-i-4_3475.cut.vrt LVVA-001679-0217-003475-PLANSETE-084-i-4_3475.xyz