#!/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 5196.0 5934.0 22.583443333333335 57.436643333333336 -gcp 40380.0 5988.0 22.625103333333332 57.436643333333336 -gcp 40452.0 39726.0 22.625103333333332 57.41581333333333 -gcp 5214.0 39678.0 22.583443333333335 57.41581333333333 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-001215-PLANSETE-022-a-15_1215.JPG LVVA-001679-0217-001215-PLANSETE-022-a-15_1215.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5196.0 5934.0\n40380.0 5988.0\n40452.0 39726.0\n5214.0 39678.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-001215-PLANSETE-022-a-15_1215.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-001215-PLANSETE-022-a-15_1215.vrt LVVA-001679-0217-001215-PLANSETE-022-a-15_1215.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-001215-PLANSETE-022-a-15_1215.cut.vrt LVVA-001679-0217-001215-PLANSETE-022-a-15_1215.xyz