#!/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 2265.0 1140.0 21.837216666666666 57.75 -gcp 14259.0 1191.0 22.337216666666666 57.75 -gcp 14250.0 12399.0 22.337216666666666 57.5 -gcp 2166.0 12339.0 21.837216666666666 57.5 bruno/K11_1918.jpg K11_1918.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2265.0 1140.0\n14259.0 1191.0\n14250.0 12399.0\n2166.0 12339.0" | \
  gdaltransform -tps -output_xy K11_1918.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  K11_1918.vrt K11_1918.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES K11_1918.cut.vrt K11_1918.xyz