#!/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 2817.0 1056.0 25.337216666666666 57.75 -gcp 16752.0 1056.0 25.837216666666666 57.75 -gcp 16788.0 14205.0 25.837216666666666 57.5 -gcp 2730.0 14172.0 25.337216666666666 57.5 bruno/R11_Wolmar.jpg R11_Wolmar.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2817.0 1056.0\n16752.0 1056.0\n16788.0 14205.0\n2730.0 14172.0" | \
  gdaltransform -tps -output_xy R11_Wolmar.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  R11_Wolmar.vrt R11_Wolmar.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES R11_Wolmar.cut.vrt R11_Wolmar.xyz