#!/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 4989.0 2241.0 25.337216666666666 57.75 -gcp 26043.0 2139.0 25.837216666666666 57.75 -gcp 26307.0 21819.0 25.837216666666666 57.5 -gcp 5079.0 21915.0 25.337216666666666 57.5 bruno/R11_RfL_1922.jpg R11_RfL_1922.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4989.0 2241.0\n26043.0 2139.0\n26307.0 21819.0\n5079.0 21915.0" | \
  gdaltransform -tps -output_xy R11_RfL_1922.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  R11_RfL_1922.vrt R11_RfL_1922.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES R11_RfL_1922.cut.vrt R11_RfL_1922.xyz