#!/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 5292.0 5970.0 22.375138333333332 57.311665 -gcp 40560.0 6096.0 22.4168 57.311665 -gcp 40554.0 39834.0 22.4168 57.290835 -gcp 5226.0 39738.0 22.375138333333332 57.290835 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-001021-PLANSETE-016-i-6_1021.JPG LVVA-001679-0217-001021-PLANSETE-016-i-6_1021.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5292.0 5970.0\n40560.0 6096.0\n40554.0 39834.0\n5226.0 39738.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-001021-PLANSETE-016-i-6_1021.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-001021-PLANSETE-016-i-6_1021.vrt LVVA-001679-0217-001021-PLANSETE-016-i-6_1021.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-001021-PLANSETE-016-i-6_1021.cut.vrt LVVA-001679-0217-001021-PLANSETE-016-i-6_1021.xyz