#!/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 6690.0 8184.0 27.416106666666668 56.39515 -gcp 42990.0 8082.0 27.457768333333334 56.39515 -gcp 43032.0 40830.0 27.457768333333334 56.37432 -gcp 6696.0 40926.0 27.416106666666668 56.37432 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-004316-PLANSETE-95-f-7_4316.JPG LVVA-001679-0217-004316-PLANSETE-95-f-7_4316.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "6690.0 8184.0\n42990.0 8082.0\n43032.0 40830.0\n6696.0 40926.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-004316-PLANSETE-95-f-7_4316.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-004316-PLANSETE-95-f-7_4316.vrt LVVA-001679-0217-004316-PLANSETE-95-f-7_4316.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-004316-PLANSETE-95-f-7_4316.cut.vrt LVVA-001679-0217-004316-PLANSETE-95-f-7_4316.xyz