#!/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 1497.0 2442.0 21.789666666666665 57.15136666666667 -gcp 29028.0 2445.0 23.004 57.22128333333333 -gcp 28872.0 22293.0 23.093783333333334 56.74915 -gcp 1413.0 22182.0 21.898233333333334 56.677033333333334 1915_3verst_de_126k/uw/Reihe_VIII_Blatt_2_Goldingen_1915_uw.jpg Reihe_VIII_Blatt_2_Goldingen_1915_uw.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1457.25 12314.251249305942\n1497.0 2442.0\n15262.5 2423.9891726818432\n29028.0 2445.0\n28872.0 22293.0\n15147.0 22196.976679622432\n1413.0 22182.0" | \
  gdaltransform -tps -output_xy Reihe_VIII_Blatt_2_Goldingen_1915_uw.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Reihe_VIII_Blatt_2_Goldingen_1915_uw.vrt Reihe_VIII_Blatt_2_Goldingen_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_2_Goldingen_1915_uw.cut.vrt Reihe_VIII_Blatt_2_Goldingen_1915_uw.xyz