#!/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 4932.0 6372.0 22.541781666666665 56.978386666666665 -gcp 40614.0 6402.0 22.583443333333335 56.978386666666665 -gcp 40668.0 40200.0 22.583443333333335 56.95755666666667 -gcp 4980.0 40146.0 22.541781666666665 56.95755666666667 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-001485-PLANSETE-024-a-6_1485.JPG LVVA-001679-0217-001485-PLANSETE-024-a-6_1485.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4932.0 6372.0\n40614.0 6402.0\n40668.0 40200.0\n4980.0 40146.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-001485-PLANSETE-024-a-6_1485.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-001485-PLANSETE-024-a-6_1485.vrt LVVA-001679-0217-001485-PLANSETE-024-a-6_1485.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-001485-PLANSETE-024-a-6_1485.cut.vrt LVVA-001679-0217-001485-PLANSETE-024-a-6_1485.xyz