#!/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 1770.0 828.0 22.337216666666666 57.5 -gcp 12357.0 840.0 22.837216666666666 57.5 -gcp 12378.0 10641.0 22.837216666666666 57.25 -gcp 1698.0 10650.0 22.337216666666666 57.25 bruno/L12 1919 lnb.jpg L12 1919 lnb.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1770.0 828.0\n12357.0 840.0\n12378.0 10641.0\n1698.0 10650.0" | \
  gdaltransform -tps -output_xy L12 1919 lnb.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  L12 1919 lnb.vrt L12 1919 lnb.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES L12 1919 lnb.cut.vrt L12 1919 lnb.xyz