#!/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 4806.0 6858.0 27.332785 55.999383333333334 -gcp 41424.0 6870.0 27.374446666666667 55.999383333333334 -gcp 41376.0 39348.0 27.374446666666667 55.97855333333333 -gcp 4662.0 39318.0 27.332785 55.97855333333333 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-004306-PLANSETE-97-c-1_4306.JPG LVVA-001679-0217-004306-PLANSETE-97-c-1_4306.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4806.0 6858.0\n41424.0 6870.0\n41376.0 39348.0\n4662.0 39318.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-004306-PLANSETE-97-c-1_4306.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-004306-PLANSETE-97-c-1_4306.vrt LVVA-001679-0217-004306-PLANSETE-97-c-1_4306.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-004306-PLANSETE-97-c-1_4306.cut.vrt LVVA-001679-0217-004306-PLANSETE-97-c-1_4306.xyz