#!/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 519.0 1318.5957801221543 29.5 57 -gcp 6544.5 1324.8797890061078 30 57 -gcp 6532.5 8869.704886174348 30 56.66666667 -gcp 447.0 8826.352304275402 29.5 56.66666667 001/krievija/O-35-120.jpg O-35-120.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "519.0 1318.5957801221543\n6544.5 1324.8797890061078\n6532.5 8869.704886174348\n447.0 8826.352304275402" | \
  gdaltransform -tps -output_xy O-35-120.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  O-35-120.vrt O-35-120.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES O-35-120.cut.vrt O-35-120.xyz