#!/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 4467.0 1551.0 24.337216666666666 57.75 -gcp 25593.0 1584.0 24.837216666666666 57.75 -gcp 25674.0 21288.0 24.837216666666666 57.5 -gcp 4422.0 21249.0 24.337216666666666 57.5 bruno/P11_1918.jpg P11_1918.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4467.0 1551.0\n25593.0 1584.0\n25674.0 21288.0\n4422.0 21249.0" | \
  gdaltransform -tps -output_xy P11_1918.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  P11_1918.vrt P11_1918.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES P11_1918.cut.vrt P11_1918.xyz