#!/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 5958.0 8082.0 22.375138333333332 57.51996333333334 -gcp 41166.0 7878.0 22.4168 57.51996333333334 -gcp 41298.0 40656.0 22.4168 57.49913333333333 -gcp 6096.0 40842.0 22.375138333333332 57.49913333333333 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-004212-PLANSETE-15-i-14_4212.JPG LVVA-001679-0217-004212-PLANSETE-15-i-14_4212.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5958.0 8082.0\n41166.0 7878.0\n41298.0 40656.0\n6096.0 40842.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-004212-PLANSETE-15-i-14_4212.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-004212-PLANSETE-15-i-14_4212.vrt LVVA-001679-0217-004212-PLANSETE-15-i-14_4212.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-004212-PLANSETE-15-i-14_4212.cut.vrt LVVA-001679-0217-004212-PLANSETE-15-i-14_4212.xyz