#!/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 5238.0 6174.0 23.041713333333334 57.37415333333333 -gcp 40512.0 6252.0 23.083373333333334 57.37415333333333 -gcp 40548.0 40026.0 23.083373333333334 57.353323333333336 -gcp 5256.0 39948.0 23.041713333333334 57.353323333333336 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-001796-PLANSETE-027-d-10_1796.JPG LVVA-001679-0217-001796-PLANSETE-027-d-10_1796.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5238.0 6174.0\n40512.0 6252.0\n40548.0 40026.0\n5256.0 39948.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-001796-PLANSETE-027-d-10_1796.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-001796-PLANSETE-027-d-10_1796.vrt LVVA-001679-0217-001796-PLANSETE-027-d-10_1796.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-001796-PLANSETE-027-d-10_1796.cut.vrt LVVA-001679-0217-001796-PLANSETE-027-d-10_1796.xyz