#!/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 5202.0 9120.0 25.583028333333335 57.33249333333333 -gcp 40488.0 9030.0 25.603858333333335 57.33249333333333 -gcp 40524.0 41880.0 25.603858333333335 57.32208 -gcp 5226.0 41964.0 25.583028333333335 57.32208 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-003345-PLANSETE-064-g-3-I_3345.JPG LVVA-001679-0217-003345-PLANSETE-064-g-3-I_3345.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5202.0 9120.0\n40488.0 9030.0\n40524.0 41880.0\n5226.0 41964.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-003345-PLANSETE-064-g-3-I_3345.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-003345-PLANSETE-064-g-3-I_3345.vrt LVVA-001679-0217-003345-PLANSETE-064-g-3-I_3345.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-003345-PLANSETE-064-g-3-I_3345.cut.vrt LVVA-001679-0217-003345-PLANSETE-064-g-3-I_3345.xyz