#!/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 1962.0 2667.0 25.429566666666666 57.33153333333333 -gcp 29391.0 2718.0 26.647333333333332 57.37153333333333 -gcp 29265.0 22173.0 26.69558333333333 56.89803333333333 -gcp 1923.0 22053.0 25.490083333333335 56.85845 1915_3verst_de_126k/uw/Reihe_VIII_Blatt_5_Ronnenburg_1915_uw.jpg Reihe_VIII_Blatt_5_Ronnenburg_1915_uw.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1972.5 12380.26124375347\n1962.0 2667.0\n15651.0 2623.461687951138\n29391.0 2718.0\n29314.5 12460.508328706273\n29265.0 22173.0\n15592.5 22116.001665741256\n1923.0 22053.0" | \
  gdaltransform -tps -output_xy Reihe_VIII_Blatt_5_Ronnenburg_1915_uw.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Reihe_VIII_Blatt_5_Ronnenburg_1915_uw.vrt Reihe_VIII_Blatt_5_Ronnenburg_1915_uw.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Reihe_VIII_Blatt_5_Ronnenburg_1915_uw.cut.vrt Reihe_VIII_Blatt_5_Ronnenburg_1915_uw.xyz