#!/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 5256.0 5844.0 22.666765 57.45747333333333 -gcp 40434.0 5916.0 22.708425 57.45747333333333 -gcp 40476.0 39660.0 22.708425 57.436643333333336 -gcp 5262.0 39588.0 22.666765 57.436643333333336 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-001225-PLANSETE-022-b-9_1225.JPG LVVA-001679-0217-001225-PLANSETE-022-b-9_1225.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5256.0 5844.0\n40434.0 5916.0\n40476.0 39660.0\n5262.0 39588.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-001225-PLANSETE-022-b-9_1225.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-001225-PLANSETE-022-b-9_1225.vrt LVVA-001679-0217-001225-PLANSETE-022-b-9_1225.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-001225-PLANSETE-022-b-9_1225.cut.vrt LVVA-001679-0217-001225-PLANSETE-022-b-9_1225.xyz