#!/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 5946.0 22.958391666666667 56.978386666666665 -gcp 40494.0 5916.0 23.000051666666668 56.978386666666665 -gcp 40596.0 39678.0 23.000051666666668 56.95755666666667 -gcp 4914.0 39684.0 22.958391666666667 56.95755666666667 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-001519-PLANSETE-024-c-8_1519.JPG LVVA-001679-0217-001519-PLANSETE-024-c-8_1519.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4806.0 5946.0\n40494.0 5916.0\n40596.0 39678.0\n4914.0 39684.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-001519-PLANSETE-024-c-8_1519.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-001519-PLANSETE-024-c-8_1519.vrt LVVA-001679-0217-001519-PLANSETE-024-c-8_1519.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-001519-PLANSETE-024-c-8_1519.cut.vrt LVVA-001679-0217-001519-PLANSETE-024-c-8_1519.xyz